The Earth's History: An Introduction to Modern Geology

accumulated amount aqueous atolls average basalt beds bottom calcareous calcium carbonate Carboniferous changes chemical coal coast cone consists coral reefs crust decay deep-sea delta denudation deposits depth destructive operations district earth Eigg elevation eruptions estimate extent fathoms feet fissures formation forms Geikie Geol geological geologist Globigerina ooze grains per gallon Grand Cañon igneous rocks inches island Krakatoa land lava limestone marine mass mechanical suspension Millstone Grit Mississippi molten Monte Nuovo mountain Murray North observed occur ocean Old Red Old Red Sandstone organic Paleozoic period pitchstone polyps present quantity Radiolarian ooze rainfall Red Clay Red Sandstone regions remains result rise river sand Scotland sea-bed sea-bottom sea-level sea-water sediment sedimentary shale shells shore silica Silurian soil solid material solution South square miles strata stream surface temperature temple Tertiary Thames thickness tion tons Uniformitarian valley vegetable Vesuvius volcanic action volcanic cones Wales