The Earth Inside and Out: Some Major Contributions to Geology in the Twentieth Century

American analysis application approach Association basins became bodies Bowen British Bulletin caused century chemical collecting composition concept conservation continental continued Contributions correlation crater crust crystallization dating deposits diagram discussion drift early Earth evidence example field formation formed fossil Geological Society geologists Geophysical granite Heezen Holmes ideas igneous impact important included Institute interest International Journal Laboratory late later logical London lunar magnetic major maps metamorphic meteorites methods minerals Moon Nature North observed occur Ocean origin period petrology phase physical plate tectonics pollen present Press problems processes Publications published recent record regional remained reported rocks Russian samples scientific scientists sedimentary sediments showed space Special stratigraphic structure suggested Survey terrane Tharp theory tion twentieth century types University York zones