Creation of
Creation of the Teton Landscape: The Geologic Story of Grand Teton National Park
作者：Love, J. D. (John David), 1913-2002; Reed, John C. (John Calvin), 1836-1910
体例：题 章数：71
字数：143,182 来源：Project Gutenberg
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cache/epub/52838/pg52838.txt（Project Gutenberg）
章节目录
共 71 题- CONTENTS
- THE STORY BEGINS
- First questions, brief answers
- An extraordinary story
- An astronaut’s view
- A pilot’s view
- A motorist’s view
- Figure 3. _The Teton landscape as seen from Signal Mountain._
- A mountaineer’s view
- CARVING THE RUGGED PEAKS
- Steep mountain slopes—the perpetual battleground
- Rock disintegration and gravitational movement
- Running water cuts and carries
- Glaciers scour and transport
- Effects on Jackson Hole
- MOUNTAIN UPLIFT
- Kinds of mountains
- Anatomy of faults
- Time and rate of uplift
- Figure 16. _Types of faults._
- The restless land
- ENORMOUS TIME AND DYNAMIC EARTH
- Framework of time
- Rocks and relative age
- Fossils and geologic time
- Radioactive clocks
- The yardstick of geologic time
- Era System or period Series or epoch
- ABSOLUTE TIME (Years ago) INCHES STRATIGRAPHIC TIME SCALE
- PRECAMBRIAN ROCKS—THE CORE OF THE TETONS
- Ancient gneisses and schists
- Figure 21. _Folds in layered gneisses._
- Granite and pegmatite
- Figure 23. _Dikes of granite and pegmatite._
- Black dikes
- Quartzite
- A backward glance
- The close of the Precambrian—end of the beginning
- ABSOLUTE TIME (Years ago) INCHES
- THE PALEOZOIC ERA—TIME OF LONG-VANISHED SEAS AND THE DEVELOPMENT OF LIFE
- The Paleozoic sequence
- Alaska Basin—site of an outstanding rock and fossil record
- Advance and retreat of Cambrian seas: an example
- Figure 35. _The first invasions of the Paleozoic sea._
- Figure 37. _Cambrian fossils in Grand Teton National Park._
- Younger Paleozoic formations
- Figure 38. _Distinctive features of Cambrian rocks._
- THE MESOZOIC—ERA OF TRANSITION
- Colorful first Mesozoic strata
- Drab Cretaceous strata
- ABSOLUTE TIME (Millions of years ago) INCHES
- Birth of the Rocky Mountains
- TERTIARY—TIME OF MAMMALS, MOUNTAINS, LAKES, AND VOLCANOES
- Rise and burial of mountains
- The First Big Lake
- Development of mammals
- Volcanoes
- QUATERNARY—TIME OF ICE, MORE LAKES, AND CONTINUED CRUSTAL DISTURBANCE
- Hoback normal fault
- Volcanic activity
- Preglacial lakes
- The Ice Age
- Modern glaciers
- THE PRESENT AND THE FUTURE
- APPENDIX
- Acknowledgements
- Selected references—if you wish to read further
- About the authors
- Index of selected terms and features
- The GRAND TETON NATURAL HISTORY ASSOCIATION
- Transcriber’s Notes