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USGS CMG InfoBank Geology School: unconformity

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Title Comment Keywords
Earth's Structures 30 minutes / n.a. deformation, structure, fold, unconformity, "tectonic activty", "geologic structure", fault, erosion, contact, earthquake, strata, "sedimentary rock", "sea level change", thrust, stress
Geologic Structure Classes 07:07 - 07:33 (00:26) / 0.9 MB structure, deformation, unconformity, fault, fracture, fold
Unconformities 16:25 - 17:32 (01:07) / 1.3 MB "James Sadd", "James Hutton", "geologic structure", unconformity, erosion, "sedimentary rock", contact
The Great Unconformity 17:32 - 18:26 (00:54) / 0.9 MB "James Sadd", "Grand Canyon", "geologic structure", unconformity, uplift, deformation, "tectonic activity", sandstone, "sea level change", erosion, "sedimentary rock", contact
Angular Unconformity 18:26 - 19:30 (01:04) / 1.2 MB "Dee Trent", "angular unconformity", "geologic structure", unconformity, erosion, uplift, "tilted bed", "sea level change", "tectonic activity", deposition, "Principle of Original Horizontality", sandstone, "sea level change", erosion, "sedimentary rock", contact
Nonconformity 19:30 - 20:30 (01:00) / 1.4 MB "Dee Trent", nonconformity, unconformity, "geologic structure", erosion, "sea level change", "tectonic activity", deposition, "metamorphic rock", "igneous rock", "sea level change", erosion, "sedimentary rock", contact
Disconformity 20:30 - 21:02 (00:32) / 0.6 MB "Dee Trent", disconformity, unconformity, "geologic structure", erosion, "tectonic activity", deposition, erosion, "sedimentary rock", contact
Dating Unconformity 21:02 - 21:25 (00:23) / 1.2 MB "Dee Trent", unconformity, fossil, "radiometric age dating"
Petroleum Reservoirs 23:29 - 24:43 (01:14) / 1.7 MB "petroleum reservoir", oil, gas, "anticlinal trap", impermeable, permeability, anticline, unconformity, "natural gas", sedimentary
Unconformity 06:06 - 06:46 (00:40) / 0.9 MB "James Hutton", unconformity, uplift, erosion, land, Bible
Relative Age Sequence 10:39 - 11:23 (00:44) / 0.6 MB "Principle of Original Horizontality", "Principle of Superposition", "Principle of Cross-cutting Relationships", unconformity, "James Hutton"
Conclusion 25:34 - 26:56 (01:22) / 1.2 MB "James Sadd", "sedimentary rock", "clastic sediment", "Grand Canyon", "Colorado River", sand, mud, "volcanic ash", "lava flow", "ocean basin", deformation, mountain, orogeny, "Mazatzal Mountains", erosion, uplift, limestone, shale, "sea level rise", flood, volcanism, deposition, unconformity, ocean, preservation
Geology School Keywords
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URL: http://walrus.wr.usgs.gov/infobank/programs/html/school/keypage/unconformityradiati.html
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Page Last Modified: Thu Oct 31 04:24:53 PDT 2013  (chd)