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TERRESTRIAL CHANGE 1
NO VESTIGE OF A BEGINNING NO PROSPECT
THE RELATIVE GEOLOGIC TIME SCALE AND MODERN
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Africa ancient animals Appalachian belt appeared areas basaltic basins Cambrian carbonate Cenozoic changes clastic climate Coast complex continental continents Cordilleran Courtesy craton Cretaceous crustal deposits developed Devonian early Cenozoic early Paleozoic earth eastern environment Eocambrian epeiric sea erosion Europe evaporite evidence evolution facies faulting faunas FIGURE floras formed fossils geologic geologists geosynclinal glacial Gondwana granitic graptolitic igneous important islands isotopic dating Jurassic kilometers land late Cenozoic late Paleozoic limestone mantle marine ments Mesozoic metamorphic meters million minerals Miocene mobile belts mountain building nonmarine North America northern occurred oceanic crust Ordovician organisms origin orogeny paleogeography paleomagnetic Paleozoic patterns Pennsylvanian Permian plants Pleistocene Prepaleozoic present quartz reefs region relative rocks sand sandstones sea floor sea level sedimentary sediments sequence shales shallow Silurian South southern strata stratigraphic structural subsidence suggest tectonic temperature thick thrust faulting tion transgression Triassic unconformity upper volcanic western widespread zoic zone