Elementary Geology |
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agency alluvial alluvium American animals and plants appear augite basalt beds beneath bones bowlders Bridgewater Treatise Buckland's called carbonate Carboniferous chalk Chirotherium clay slate climate coal formation contain Cretaceous crust deposition Descrip dicotyledonous diluvial diluvium earth elevation England epoch Europe example existing extinct feet feldspar fishes fossil fossiliferous rocks genera geologists globe gneiss granite graywacke greenstone heat Hence hornblende Inference Infusoria iron Island Journal of Science lava lime limestone living species Lyell's Principles marl mass Massachusetts matter mica mica slate miles mineral mountains nearly occur ocean oolite organic remains period porphyry primary rocks Principles of Geology probably produced Prof Proof quartz red sandstone region Remark river Saliferous salt sand secondary rocks shells sienite siliceous Silurian sometimes stratified suppose surface System temperature tertiary strata theory thick tion trachyte trilobites unstratified rocks veins volcanic