  ENORMOUS TIME AND DYNAMIC EARTH Framework of time PRECAMBRIAN ROCKS THE CORE OF THE TETONS THE PALEOZOIC ERA TIME OF LONG-VANISHED SEAS AND THE DEVELOPMENT OF LIFE The Paleozoic sequence THE MESOZOIC ERA OF TRANSITION TERTIARY TIME OF MAMMALS, MOUNTAINS, LAKES, AND VOLCANOES QUATERNARY TIME OF ICE, MORE LAKES, AND CONTINUED CRUSTAL DISTURBANCE Index of selected terms and features The GRAND TETON NATURAL HISTORY ASSOCIATION View west toward Grand Teton on skyline. Hedrick’s Pond surrounded by “knob and kettle” topography is in foreground, tree-covered Burned Ridge moraine is in middle distance, and extending from it to foot of mountains is gray flat treeless glacial outwash plain. National Park Service photo by W. E. Dilley. View west up Cascade Canyon, with north face of Mt. Owen in center. National Park Service photo by H. D. Pownall. To Fritiof M. Fryxell, geologist, teacher, All who love and strive to understand CREATION OF THE |
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