Geological and Geophysical data of field activity L-1-86-NC in Gorda Ridge, Northern California from 06/30/1986 to 07/14/1986

U.S. Geological Survey (USGS) <http://www.usgs.gov/>, Coastal and Marine Geology Program (CMGP) <http://marine.usgs.gov/> 20130609 Geological and Geophysical data of field activity L-1-86-NC in Gorda Ridge, Northern California from 06/30/1986 to 07/14/1986 Menlo Park, CA U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov> http://walrus.wr.usgs.gov/infobank/gos/l-1-86-nc.fmeta.xml http://walrus.wr.usgs.gov/infobank/l/l186nc/html/l-1-86-nc.meta.html Chief Scientist: Jan Morton. Geological and Geophysical data (3dot5khz, 12khz, airgun, bottomtransponder, GPS, integratednavigation, RhoRho, transitsatellite, gravitycore, chaindredge, Niskenbottle, underwatercamera, underwatertelevision) of field activity L-1-86-NC in Gorda Ridge, Northern California from 06/30/1986 to 07/14/1986, http://walrus.wr.usgs.gov/infobank/l/l186nc/html/l-1-86-nc.meta.html. These data and information are intended for science researchers, students from elementary through college, policy makers, and general public. Equipment Used - 3dot5khz 3.5 khz bathymetry 12khz 12 khz bathymetry airgun single-channel airgun bottomtransponder acoustic bottom transponder GPS GPS satellite integratednavigation RhoRho Loran C Rho-Rho transitsatellite gravitycore chaindredge Niskenbottle underwatercamera underwatertelevision Notes - Gorda Ridge resources Publications - Kvenvolden, Keith A., Rapp, John B., Hostettler, Frances D., Morton, Janet L., King, J. David, and Claypool, George E., 1986, Petroleum associated with polymetallic sulfide in sediment from Gorda Ridge: Science, v. 234, no. 4781, p. 1231-1234. <HR> Koski, Randolph A., Zierenberg, Robert A., Kvenvolden, Keith A., and Shanks, Wayne C., III, 1987, Mineralogy and chemistry of hydrothermal sulfide and petroleum deposits from Escanaba Trough, Gorda Ridge, in Sachs, Janet Somerville, ed., USGS research on mineral resources, 1987; program and abstracts: U.S. Geological Survey Circular 0995, p. 35. <HR> Morton, Janet L., Normark, William R., Holmes, Mark L., and Lyle, Mitchell W., 1987, Geologic setting of two sediment-hosted hydrothermal mineral localities in Escanaba Trough, Gorda Ridge, in Sachs, Janet Somerville, ed., USGS research on mineral resources, 1987; program and abstracts: U.S. Geological Survey Circular 0995, p. 49-50. <HR> Koski, Randolph A., and Kvenvolden, Keith A., 1986, Polymetallic sulfide associated with asphaltic petroleum at the Gorda Ridge spreading center, offshore Northern California: American Geophysical Union Eos, Transactions, v. 67, no. 44, p. 1283. <HR> Morton, Janet L., Normark, William R., Ross, Stephanie L., Koski, Randolph A., Holmes, Mark L., Shanks, Wayne C., III, Zierenberg, Robert A., Lyle, Mitchell W., and Benninger, Laura M., 1987, Preliminary report, cruises L1-86-NC and L2-86-NC, Escanaba Trough, Gorda Ridge: U.S. Geological Survey Open-File Report 87-0375-A, 20 p. <HR> Kvenvolden, Keith A., Morton, Janet L., and Holmes, Mark L., 1986, Hydrothermal petroleum associated with polymetallic sulfides, Escanaba Trough, offshore Northern California: Geological Society of America Abstracts with Programs, v. 18, no. 6, p. 663. <HR> Kvenvolden, Keith A., Rapp, John B., and Hostettler, Frances D., 1987, Hydrocarbon geochemistry of petroleum associated with sediment-hosted sulfides from Escanaba Trough, southern Gorda Ridge: U.S. Geological Survey Open-File Report 87-0375-C, 18 p. <HR> Wong, Florence L., 1989, Mineralogy of sand in turbidites from Escanaba Trough, Northeast Pacific Ocean: U.S. Geological Survey Open-File Report 89-0661, 10 p. <HR> Morton, Janet L., Koski, Randolph A., Normark, William R., and Ross, Stephanie L., 1987, Distribution and composition of massive sulfide deposits at Escanaba Trough, southern Gorda Ridge, in McMurray, Gregory R., ed., Gorda Ridge; a seafloor spreading center in the United States' Exclusive Economic Zone; proceedings of the Gorda Ridge symposium: New York, NY, Springer-Verlag. <HR> Kvenvolden, Keith A., Rapp, John B., and Hostettler, Frances D., 1990, Hydrocarbon geochemistry of hydrothermally generated petroleum from Escanaba Trough, offshore California, U.S.A., Simoneit, Bernd R.T., ed., Organic matter in hydrothermal systems; maturation, migration and biogeochemistry, selected papers from the symposium held at the Third chemical congress of North America and the 195th American Chemical Society national meeting: Applied Geochemistry, v. 5, no. 1-2, p. 83-91. <HR> Morton, Janet L., Normark, William R., Clague, David A., and Holmes, Mark L., 1987, Fine-scale segmentation of the sedimented southern Gorda Ridge, offshore Northern California: International Union of Geodesy and Geophysics, General Assembly, v. 19, v. 1, p. 88. <HR> Koski, Randolph A., Morton, Janet L., Zierenberg, Robert A., Shanks, Wayne C., III, Campbell, Andrew C., and Kvenvolden, Keith A., 1991, Large sulfide-sulfate mounds, hydrothermal fluids, and altered sediment in Escanaba Trough, southern Gorda Ridge; elements of a mature hydrothermal system at a sediment-covered spreading axis, in Good, Elizabeth E., Slack, John F, and Kotra, Rama K., eds., USGS research on mineral resources, 1991; program and abstracts: U.S. Geological Survey Circular 1062, p. 46-47. <HR> Kvenvolden, Keith A., and Kastner, Miriam, 1988, Gas hydrates in sediment of the Peruvian continental margin: Chemical Congress of North America, Abstracts of Papers, v. 3, GEOC 1. <HR> Morton, Janet L., Zierenberg, Robert A., and Reiss, Carol A., eds., 1994, Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, 359 p. <HR> Morton, Janet L., Zierenberg, Robert A., and Reiss, Carol A., 1994, Geologic, hydrothermal, and biologic studies at Escanaba Trough; an introduction, in Morton, Janet L., Zierenberg, Robert A., and Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 1-18. <HR> Morton, Janet L., and Fox, Christopher G., 1994, Structural setting and interaction of volcanism and sedimentation at Escanaba Trough; geophysical results, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 21-43. <HR> Davis, Earl E., and Becker, Keir, 1994, Thermal and tectonic structure of Escanaba Trough; new heat-flow measurements and seismic-reflection profiles, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 45-64. <HR> Denlinger, Roger P., and Holmes, Mark L., 1994, A thermal and mechanical model for sediment hills and associated sulfide deposits along Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 65-75. <HR> Karlin, Robert E., and Morton, Janet L., 1994, Crustal magnetization and basement structure of Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 77-90. <HR> Normark, William R., Gutmacher, Christina E., Zierenberg, Robert A., Wong, Florence L., and Rosenbauer, Robert J., 1994, Sediment fill of Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 91-129. <HR> Karlin, Robert E., and Zierenberg, Robert A., 1994, Sedimentation and neotectonism in the SESCA area, Escanaba Trough, southern Gorda Ridge, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 131-141. <HR> Ross, Stephanie L., and Zierenberg, Robert A., 1994, Volcanic geomorphology of the SESCA and NESCA sites, Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 143-151. <HR> Davis, Alice S., Clague, David A., and Friesen, Walter B., 1994, Petrology and mineral chemistry of basalt from Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 153-170. <HR> Zierenberg, Robert A., Morton, Janet L., Koski, Randolph A., and Ross, Stephanie L., 1994, Geologic setting of massive sulfide mineralization in Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 171-197. <HR> Campbell, Andrew C., German, Chris R., Palmer, Martin R., Gamo, Toshitaka, and Edmond, John M., 1994, Chemistry of hydrothermal fluids from Escanaba Trough, Gorda Ridge, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 201-221. <HR> Bohlke, J.K., and Shanks, W.C., III, 1994, Stable isotope study of hydrothermal vents at Escanaba Trough; observed and calculated effects of sediment-seawater interaction, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 223-239. <HR> Magenheim, Andrew J., and Gieskes, Joris M., 1994, Evidence for hydrothermal fluid flow through surficial sediments, Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 241-255. <HR> Zierenberg, Robert A., and Shanks, Wayne C., III, 1994, Sediment alteration associated with massive sulfide formation in Escanaba Trough, Gorda Ridge; the importance of seawater mixing and magnesium metasomatism, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 257-277. <HR> Kvenvolden, Keith A., Rapp, John B., and Hostettler, Frances D., 1994, Hydrocarbons in sediment from Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 279-292. <HR> Koski, Randolph A., Benninger, Laura M., Zierenberg, Robert A., and Jonasson, Ian R., 1994, Composition and growth history of hydrothermal deposits in Escanaba Trough, southern Gorda Ridge, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 293-324. <HR> Grassle, J. Frederick, and Petrecca, Rosemarie F., 1994, Soft-sediment hydrothermal vent communities of Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 327-335. <HR> Quinterno, Paula J., 1994, Quaternary foraminifers from Escanaba Trough, Northeast Pacific Ocean, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 337-359. <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1126-A <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1126-B <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1126-C <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1126-D <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1127-A <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1127-B <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1127-C <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1127-D <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1127-E <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1128-A <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1128-B <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1128-C <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1128-D <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1128-E <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1129-A <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1129-B <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1129-C <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1129-D <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1129-E <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1130-A <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1130-B <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1131-A <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1131-B <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1131-C <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1131-D <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1131-E <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1132-A <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1132-B <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1132-C <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1132-D <HR> Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1132-E Similar information is available for thousands of other USGS/CMG-related Activities. If known, available are Activity-specific navigation, gravity, magnetics, bathymetry, seismic, and sampling data; track maps; and equipment information; as well as summary overviews, crew lists, and information about analog materials. If available, access to physical samples is described in the "WR CMG Sample Distribution Policy" at: http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html Primary access to the USGS/CMG Information Bank's digital data, analog data, and metadata is provided through... http://walrus.wr.usgs.gov/infobank/ This page accomodates a variety of search approaches (e.g., by platform, by region, by scientist, by equipment type, etc.). 19860630 19860714 ground condition Complete As needed -127.71479 -122.22691 41.07375 37.58811 ISO 19115 Topic Category geoscientificinformation oceans Global Change Master Directory (GCMD) EARTH SCIENCE > OCEANS USGS CMG InfoBank Marine Geology Marine Geophysics Bathymetry Water Depth Seafloor Topography Marine Seismic USGS CMG InfoBank CA Gorda Ridge, Northern California North Pacific Ocean Northern California Northern Pacific Ocean Pacific Coast, US USA Physical materials are under controlled on-site access. 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U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov> Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html> InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html> mailing and physical address

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Menlo Park CA 94025-3561 USA (650) 329-5055 (650) 329-5190 infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov> Al McClenaghan (Ship Captain); Bill Lafleur (Chief Engineer, USGS Western Region); Carol Reiss (Watchstander, USGS Western Region); Chris Poppe (Chief Mate, USGS Western Region); Chuck Gilbert (Watchstander, USGS Western Region); Corky Ozanne (Mechanical Technician, USGS Western Region); Eileen Hemphill-Haley (Navigator, USGS Western Region); Hal Williams (Mechanical Technician, USGS Western Region); Hank Chezar (Geologist, USGS Western Region); Jack Lee (Electronics Technician, USGS Western Region); Jan Morton (Chief Scientist, USGS Western Region); Joe Thomas (Electronics Technician, USGS Western Region); John Gann (Navigator, USGS Western Region); John Rapp (Geochemist, USGS Western Region); Kaye Kinoshita (Navigator, USGS Western Region); Laura Benninger (Geologist, USGS Western Region); Linda Monroe (Watchstander, The Oregon); Mitch Lyle (Geologist, Or. St. U.); Pat Crocker (Watchstander, USGS Western Region); Pat Shanks (Geologist, USGS Western Region); Stephanie Ross (Geologist, USGS Western Region); Wendy Bohrson (Geologist, USGS Western Region) Digital, ASCII U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov> Unknown USGS/CMG Information Bank <http://walrus.wr.usgs.gov/infobank/> Menlo Park, CA U.S. Geological Survey (USGS) <http://www.usgs.gov> Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov> Kvenvolden, Keith A., Rapp, John B., Hostettler, Frances D., Morton, Janet L., King, J. David, and Claypool, George E., 1986, Petroleum associated with polymetallic sulfide in sediment from Gorda Ridge: Science, v. 234, no. 4781, p. 1231-1234. Koski, Randolph A., Zierenberg, Robert A., Kvenvolden, Keith A., and Shanks, Wayne C., III, 1987, Mineralogy and chemistry of hydrothermal sulfide and petroleum deposits from Escanaba Trough, Gorda Ridge, in Sachs, Janet Somerville, ed., USGS research on mineral resources, 1987; program and abstracts: U.S. Geological Survey Circular 0995, p. 35. Morton, Janet L., Normark, William R., Holmes, Mark L., and Lyle, Mitchell W., 1987, Geologic setting of two sediment-hosted hydrothermal mineral localities in Escanaba Trough, Gorda Ridge, in Sachs, Janet Somerville, ed., USGS research on mineral resources, 1987; program and abstracts: U.S. Geological Survey Circular 0995, p. 49-50. Koski, Randolph A., and Kvenvolden, Keith A., 1986, Polymetallic sulfide associated with asphaltic petroleum at the Gorda Ridge spreading center, offshore Northern California: American Geophysical Union Eos, Transactions, v. 67, no. 44, p. 1283. Morton, Janet L., Normark, William R., Ross, Stephanie L., Koski, Randolph A., Holmes, Mark L., Shanks, Wayne C., III, Zierenberg, Robert A., Lyle, Mitchell W., and Benninger, Laura M., 1987, Preliminary report, cruises L1-86-NC and L2-86-NC, Escanaba Trough, Gorda Ridge: U.S. Geological Survey Open-File Report 87-0375-A, 20 p. Kvenvolden, Keith A., Morton, Janet L., and Holmes, Mark L., 1986, Hydrothermal petroleum associated with polymetallic sulfides, Escanaba Trough, offshore Northern California: Geological Society of America Abstracts with Programs, v. 18, no. 6, p. 663. Kvenvolden, Keith A., Rapp, John B., and Hostettler, Frances D., 1987, Hydrocarbon geochemistry of petroleum associated with sediment-hosted sulfides from Escanaba Trough, southern Gorda Ridge: U.S. Geological Survey Open-File Report 87-0375-C, 18 p. Wong, Florence L., 1989, Mineralogy of sand in turbidites from Escanaba Trough, Northeast Pacific Ocean: U.S. Geological Survey Open-File Report 89-0661, 10 p. Morton, Janet L., Koski, Randolph A., Normark, William R., and Ross, Stephanie L., 1987, Distribution and composition of massive sulfide deposits at Escanaba Trough, southern Gorda Ridge, in McMurray, Gregory R., ed., Gorda Ridge; a seafloor spreading center in the United States' Exclusive Economic Zone; proceedings of the Gorda Ridge symposium: New York, NY, Springer-Verlag. Kvenvolden, Keith A., Rapp, John B., and Hostettler, Frances D., 1990, Hydrocarbon geochemistry of hydrothermally generated petroleum from Escanaba Trough, offshore California, U.S.A., Simoneit, Bernd R.T., ed., Organic matter in hydrothermal systems; maturation, migration and biogeochemistry, selected papers from the symposium held at the Third chemical congress of North America and the 195th American Chemical Society national meeting: Applied Geochemistry, v. 5, no. 1-2, p. 83-91. Morton, Janet L., Normark, William R., Clague, David A., and Holmes, Mark L., 1987, Fine-scale segmentation of the sedimented southern Gorda Ridge, offshore Northern California: International Union of Geodesy and Geophysics, General Assembly, v. 19, v. 1, p. 88. Koski, Randolph A., Morton, Janet L., Zierenberg, Robert A., Shanks, Wayne C., III, Campbell, Andrew C., and Kvenvolden, Keith A., 1991, Large sulfide-sulfate mounds, hydrothermal fluids, and altered sediment in Escanaba Trough, southern Gorda Ridge; elements of a mature hydrothermal system at a sediment-covered spreading axis, in Good, Elizabeth E., Slack, John F, and Kotra, Rama K., eds., USGS research on mineral resources, 1991; program and abstracts: U.S. Geological Survey Circular 1062, p. 46-47. Kvenvolden, Keith A., and Kastner, Miriam, 1988, Gas hydrates in sediment of the Peruvian continental margin: Chemical Congress of North America, Abstracts of Papers, v. 3, GEOC 1. Morton, Janet L., Zierenberg, Robert A., and Reiss, Carol A., eds., 1994, Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, 359 p. Morton, Janet L., Zierenberg, Robert A., and Reiss, Carol A., 1994, Geologic, hydrothermal, and biologic studies at Escanaba Trough; an introduction, in Morton, Janet L., Zierenberg, Robert A., and Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 1-18. Morton, Janet L., and Fox, Christopher G., 1994, Structural setting and interaction of volcanism and sedimentation at Escanaba Trough; geophysical results, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 21-43. Davis, Earl E., and Becker, Keir, 1994, Thermal and tectonic structure of Escanaba Trough; new heat-flow measurements and seismic-reflection profiles, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 45-64. Denlinger, Roger P., and Holmes, Mark L., 1994, A thermal and mechanical model for sediment hills and associated sulfide deposits along Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 65-75. Karlin, Robert E., and Morton, Janet L., 1994, Crustal magnetization and basement structure of Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 77-90. Normark, William R., Gutmacher, Christina E., Zierenberg, Robert A., Wong, Florence L., and Rosenbauer, Robert J., 1994, Sediment fill of Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 91-129. Karlin, Robert E., and Zierenberg, Robert A., 1994, Sedimentation and neotectonism in the SESCA area, Escanaba Trough, southern Gorda Ridge, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 131-141. Ross, Stephanie L., and Zierenberg, Robert A., 1994, Volcanic geomorphology of the SESCA and NESCA sites, Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 143-151. Davis, Alice S., Clague, David A., and Friesen, Walter B., 1994, Petrology and mineral chemistry of basalt from Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 153-170. Zierenberg, Robert A., Morton, Janet L., Koski, Randolph A., and Ross, Stephanie L., 1994, Geologic setting of massive sulfide mineralization in Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 171-197. Campbell, Andrew C., German, Chris R., Palmer, Martin R., Gamo, Toshitaka, and Edmond, John M., 1994, Chemistry of hydrothermal fluids from Escanaba Trough, Gorda Ridge, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 201-221. Bohlke, J.K., and Shanks, W.C., III, 1994, Stable isotope study of hydrothermal vents at Escanaba Trough; observed and calculated effects of sediment-seawater interaction, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 223-239. Magenheim, Andrew J., and Gieskes, Joris M., 1994, Evidence for hydrothermal fluid flow through surficial sediments, Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 241-255. Zierenberg, Robert A., and Shanks, Wayne C., III, 1994, Sediment alteration associated with massive sulfide formation in Escanaba Trough, Gorda Ridge; the importance of seawater mixing and magnesium metasomatism, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 257-277. Kvenvolden, Keith A., Rapp, John B., and Hostettler, Frances D., 1994, Hydrocarbons in sediment from Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 279-292. Koski, Randolph A., Benninger, Laura M., Zierenberg, Robert A., and Jonasson, Ian R., 1994, Composition and growth history of hydrothermal deposits in Escanaba Trough, southern Gorda Ridge, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 293-324. Grassle, J. Frederick, and Petrecca, Rosemarie F., 1994, Soft-sediment hydrothermal vent communities of Escanaba Trough, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 327-335. Quinterno, Paula J., 1994, Quaternary foraminifers from Escanaba Trough, Northeast Pacific Ocean, in Morton, Janet L., Zierenberg, Robert A., Reiss, Carol A., eds., Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore Northern California: U.S. Geological Survey Bulletin 2022, p. 337-359. Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1126-A Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1126-B Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1126-C Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1126-D Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1127-A Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1127-B Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1127-C Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1127-D Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1127-E Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1128-A Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1128-B Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1128-C Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1128-D Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1128-E Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1129-A Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1129-B Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1129-C Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1129-D Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1129-E Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1130-A Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1130-B Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1131-A Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1131-B Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1131-C Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1131-D Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1131-E Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1132-A Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1132-B Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1132-C Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1132-D Chezar, Henry, and Newman, Ivy, 2004, DVD-Video Disc set of seafloor transects during USGS research cruises in the Pacific Ocean, U.S. Geological Survey Open-File Report OFR 2004-1132-E http://walrus.wr.usgs.gov/infobank/ Identified as best available version. 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USGS, MailStop 999, 345 Middlefield Road

Menlo Park CA 94025-3561 USA (650) 329-5055 (650) 329-5190 infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov> Bathymetry Data >10/31/1998 /tiger/l/l186nc/bath/l-1-86-nc.300_070 >/bear/programs/edit/automerge/automerge > >Input was... >Converted to time format with year at start. > >Input was... >Converted to time format with year at start. > >07/22/86 BECKIE DUA0:[DATA.L186NC]L186NC.070; >DRB0:[DRS.NAV]EOTCSSP.EXE; > >07/18/86 CLINT DUA0:[DATA.L186NC]L186NC.051; >DRB0:[DRS.NAV]SINSADJ.EXE; > >time, lat, long, time(sec) to nearest nav fix, data values 19981031 U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov> Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html> InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html> mailing and physical address

USGS, MailStop 999, 345 Middlefield Road

Menlo Park CA 94025-3561 USA (650) 329-5055 (650) 329-5190 infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov> Gorda Ridge, Northern California Point Point 0.00001 0.00001 Decimal degrees Local surface 0.1 meters Attribute values Bathymetry with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/bath.html> Navigation with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/nav.html> U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov> Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html> InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html> mailing and physical address

USGS, MailStop 999, 345 Middlefield Road

Menlo Park CA 94025-3561 USA (650) 329-5055 (650) 329-5190 infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov> Downloadable Data L-1-86-NC data set <http://walrus.wr.usgs.gov/infobank/l/l186nc/html/l-1-86-nc.meta.html> Please recognize the U.S. Geological Survey (USGS) as the source of this information. Physical materials are under controlled on-site access. Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user. This information is not intended for navigational purposes. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. ASCII No compression applied 1.3 http://walrus.wr.usgs.gov/infobank/l/l186nc/html/l-1-86-nc.nav.html ASCII No compression applied 1.0 http://walrus.wr.usgs.gov/infobank/l/l186nc/html/l-1-86-nc.bath.html None 20130609 U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov> Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html> InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html> mailing and physical address

USGS, MailStop 999, 345 Middlefield Road

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