101 American Geo-Site You've Gotta See

Overview

Rocks racing across a lakebed in Death Valley. Perfectly preserved 36-million-year-old tsetse flies in Colorado. Dinosaur trackways cemented into ancient floodplains in Connecticut. A gaping rift in the Idaho desert. What do these enigmatic geologic phenomena have in common? Besides initiating a profusion of head-scratching over the years, these sites of geologic wonder appear side by side, for the first time, in a single publication.

Examining in detail at least one amazing ...

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Overview

Rocks racing across a lakebed in Death Valley. Perfectly preserved 36-million-year-old tsetse flies in Colorado. Dinosaur trackways cemented into ancient floodplains in Connecticut. A gaping rift in the Idaho desert. What do these enigmatic geologic phenomena have in common? Besides initiating a profusion of head-scratching over the years, these sites of geologic wonder appear side by side, for the first time, in a single publication.

Examining in detail at least one amazing site for all fifty states, Albert Dickas clearly explains the geologic forces behind each one's origin in 101 American Geo-Sites You've Gotta See. Dickas discusses not only iconic landforms such as Devil's Tower in Wyoming but also locales that are often overlooked yet have fascinating stories. Consider the Reelfoot scarp in Tennessee: to the casual observer it is nothing more than a slight rise in a farm field. Yet this subtle slope represents a rift formed during an 1812 earthquake that forced the mighty Mississippi to flow upstream. Or Lousiana's unassuming, low-lying Avery Island, which actually caps an 8.5-mile-high column of salt. Amply illustrated with full-color photographs and illustrations and written in clear yet playful prose, 101 American Geo-Sites You've Gotta See will entertain and inform amateur and seasoned geology buffs whether from an armchair or in the field.

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Product Details

  • ISBN-13: 9780878425877
  • Publisher: Mountain Press Publishing Company, Inc.
  • Publication date: 4/15/2012
  • Pages: 264
  • Sales rank: 533,103
  • Product dimensions: 8.30 (w) x 8.90 (h) x 0.70 (d)

Table of Contents

Foreword ix

Acknowledgments xi

Introduction 1

Relative Age Dating 1

Absolute Age Dating 4

Plate Tectonics Theory 5

A Short History of the Earth 11

Hadean Eon: 4,600 to 4,000 Million Years Ago 11

Archean Eon: 4,000 to 2,500 Million Years Ago 12

Proterozoic Eon: 2,500 to 542 Million Years Ago 12

Cambrian Period: 542 to 488 Million Years Ago 12

Ordovician Period: 488 to 443 Million Years Ago 13

Silurian Period: 443 to 416 Million Years Ago 13

Devonian Period: 416 to 359 Million Years Ago 14

Carboniferous Period: 359 to 299 Million Years Ago 14

Permian Period: 299 to 251 Million Years Ago 15

Triassic Period: 251 to 199 Million Years Ago 15

Jurassic Period: 199 to 145 Million Years Ago 15

Cretaceous Period: 145 to 65 Million Years Ago 16

Paleogene Period: 65 to 23 Million Years Ago 16

Neogene Period: 23 to 2.6 Million Years Ago 17

Quaternary Period: 2.6 Million Years Ago to Today 17

Geo-Sites

1 Wetumpka Crater, Alabama 20

2 Exit Glacier, Alaska 22

3 Antelope Canyon, Arizona 24

4 Meteor Crater, Arizona 26

5 Monument Valley, Arizona 28

6 Prairie Creek Pipe, Arkansas 30

7 Wallace Creek, California 32

8 Racetrack Playa, California 34

9 Devils Postpile, California 36

10 Rancho La Brea, California 38

11 El Capitan, California 40

12 Boulder Flatirons, Colorado 42

13 Interstate 70 Roadcut, Colorado 44

14 Florissant Fossil Beds, Colorado 46

15 Dinosaur Trackway, Connecticut 48

16 Wilmington Blue Rocks, Delaware 50

17 Devil's Millhopper, Florida 52

18 Stone Mountain, Georgia 54

19 Kilauea Volcano, Hawaii 56

20 Borah Peak, Idaho 58

21 Menan Buttes, Idaho 60

22 Great Rift, Idaho 62

23 Valmeyer Anticline, Illinois 64

24 Hanging Rock Klint, Indiana 66

25 Fort Dodge Gypsum, Iowa 68

26 Monument Rocks, Kansas 70

27 Ohio Black Shale, Kentucky 72

28 Mammoth Cave, Kentucky 74

29 Four Corners Roadcut, Kentucky 76

30 Avery Island, Louisiana 78

31 Schoodic Point, Maine 80

32 Calvert Cliffs, Maryland 82

33 Purgatory Chasm, Massachusetts 84

34 Nonesuch Potholes, Michigan 86

35 Quincy Mine, Michigan 88

36 Grand River Ledges, Michigan 90

37 Sioux Quartzite, Minnesota 92

38 Thomson Dikes, Minnesota 94

39 Soudan Mine, Minnesota 96

40 Petrified Forest, Mississippi 98

41 Elephant Rocks, Missouri 100

42 Grassy Mountain Nonconformity, Missouri 102

43 Chief Mountain, Montana 104

44 Madison Slide, Montana 106

45 Butte Pluton, Montana 108

46 Quad Creek Quartzite, Montana 110

47 Ashfall Fossil Beds, Nebraska 112

48 Scotts Bluff, Nebraska 114

49 Crow Creek Marls tone, Nebraska 116

50 Sand Mountain, Nevada 118

51 Great Unconformity, Nevada 120

52 Flume Gorge, New Hampshire 122

53 Palisades Sill, New Jersey 124

54 White Sands, New Mexico 126

55 Carlsbad Caverns, New Mexico 128

56 Ship Rock, New Mexico 130

57 State Line Outcrop, New Mexico 132

58 American Falls, New York 134

59 Taconic Unconformity, New York 136

60 Gilboa Forest, New York 138

61 Pilot Mountain, North Carolina 140

62 South Killdeer Mountain, North Dakota 142

63 Hueston Woods, Ohio 144

64 Big Rock, Ohio 146

65 Kelleys Island, Ohio 148

66 Interstate 35 Roadcut, Oklahoma 150

67 Mount Mazama, Oregon 152

68 Lava River Cave, Oregon 154

69 Drake's Folly, Pennsylvania 156

70 Hickory Run, Pennsylvania 158

71 Delaware Water Gap, Pennsylvania 160

72 Beavertail Point, Rhode Island 162

73 Crowburg Basin, South Carolina 164

74 Mount Rushmore, South Dakota 166

75 Mammoth Site, South Dakota 168

76 Pinnacles Overlook, South Dakota 170

77 Reelfoot Scarp, Tennessee 172

78 Enchanted Rock, Texas 174

79 Capitan Reef, Texas 176

80 Paluxy River Tracks, Texas 178

81 Upheaval Dome, Utah 180

82 Checkerboard Mesa, Utah 182

83 San Juan Goosenecks, Utah 184

84 Salina Canyon Unconformity, Utah 186

85 Bingham Stock, Utah 188

86 Whipstock Hill, Vermont 190

87 Great Falls, Virginia 192

88 Natural Bridge, Virginia 194

89 Millbrig Ashfall, Virginia 196

90 Catoctin Greenstone, Virginia 198

91 Mount St. Helens, Washington 200

92 Dry Falls, Washington 202

93 Seneca Rocks, West Virginia 204

94 Roche-A-Cri Mound, Wisconsin 206

95 Van Hise Rock, Wisconsin 208

96 Amnicon Falls, Wisconsin 210

97 Green River, Wyoming 212

98 Devils Tower, Wyoming 214

99 Fossil Butte, Wyoming 216

100 Steamboat Geyser, Wyoming 218

101 Specimen Ridge, Wyoming 220

Glossary 223

References 229

Index 243

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