USGS CMG InfoBank Geology School: trench

Dictionaries:	Our Mapping Systems The USGS and Science Education USGS Fact Sheets Topics Keywords Data Dictionary Metadata Dictionary Computer Terminology Digital Formats
InfoBank Terms:	Activity ID activity overview crew digital data formal metadata lines metadata NGDC port stops project/theme region ship stations time virtual globe year
Data Types:	bathymetry biological geochemical gravity ground penetrating radar imaging LIDAR logs magnetics metering equipment navigation samples seismic total station definitions disclaimer
Data Formats:	ARC coverage E00 FGDC metadata gridded/image imaging material scattered/swath Shapefile vector/polygon

Title	Comment	Keywords
No Evidence For An Expanding Earth	12:56 - 13:54 (00:58) / 0.7 MB	"Harry H. Hess", "sea floor spreading", "mid-oceanic ridge", Earth, crust, trench, subduction, "Alfred Wegener", data, geopoetry, paleomagnetism
Island Arc System	07:45 - 08:41 (00:56) / 0.4 MB	"plate tectonics", plate, subduction, trench, earthquake, mantle, crust, basalt, "oceanic crust", pressure, magma, andesite, eruption, "volcanic chain", island, "island arc"
Push and Pull of Plates	16:10 - 17:34 (01:24) / 0.7 MB	"Gary Ernst", lithosphere, "plate tectonics", trench, "mid-oceanic ridge", modeling, asthenosphere, plate
Orogeny at the Edge of Continents	09:29 - 10:36 (01:07) / 1.3 MB	sediment, orogeny, lithosphere, continent, "convergent plate", pressure, subduction, volcano, "island arc", "continental margin", trench, uplift, heat, melting, "metamorphic rock", crust, "igneous rock", granite
Seaward Jump of Subduction Zone	14:37 - 15:08 (00:31) / 0.5 MB	subduction, metamorphism, "igneous rock", continent, collision, seamount, island, trench, "convergent plate"

Geology School Keywords

U.S. Department of the Interior | U.S. Geological Survey
URL: http://walrus.wr.usgs.gov/infobank/programs/html/school/keypage/trenchs_.html
Page Contact Information: InfoBank staff
Page Last Modified: Tue Feb 5 05:13:17 PST 2013 (chd)