|
South Park Colorado Geology and origin of by Stark Hard Cover
South Park Colorado Geology and origin of by Stark, et al
Hard cover
Copyright 1949
188 pages Index
3 maps in back pocket various sizes
CONTENTS
Page
ABSTRACT.......... 1
INTRODUCTION .......... 3
Preliminary statement.. 3
Field work ..... 3
Acknowledgments ...... 4
PHYSIOGRAPHIC FEATURES 5
General location and setting 5
Surrounding mountains and hills ...........5
Physiographic features of the Park proper 9
Dominant characteristics 9
Secondary features within the Park 10
Pediments or erosion planes 12
Elkhorn Upland 12
Volcanic hills ... 13
Climate 13
General statement 13
Precipitation 13
Temperatures 14
Winds 15
Streams and drainage 15
PRE-CAMBRIAN ROCKS 17
General statement 17
Idaho Springs formation. 17
Distribution and general character 17
Origin ................... 19
Pikes Peak granite........ 19
Distribution and general character ....... 19
Origin 21
Silver Plume granite ..... 21
Heavy-mineral correlations of Precambrian rocks....23
Introductory remarks 23
Grain counts 25
Notes on mineral species...... 25
Summary of diagnostic properties ....... 26
Discussion of mineral percentages ....... 26
Conclusions .... 31
PALEOZOIC AND LATER SEDIMENTARY ROCKS 32
General Statement 32
Pre-Pennsylvanian Paleozoic formations 33
Permo-Pennsylvanian sediments 33
Weber (?) formation 33
Maroon formation 42
Jurassic (?) sediments 47
Garo sandstone 47
Jurassic sediments 49
Morrison formation 49
Cretaceous sediments.... 51
Dakota formation 51
Benton formation .....................51
Niobrara formation 53
Pierre formation 54
Fox Hills formation ... 55
Laramie formation. 56
TERTIARY SEDIMENTS ...... .. ...57
Sediments of Eocene age........ 57
Denver formation ....... ..57
Sediments of probable Oligocene Age 61
Balfour formation 61
Sediments of known Oligocene Age 63
Antero formation 63
Sediments of probable Miocene and Pliocene Age 68
Wagon tongue formation 68
Trump formation 70
PLEISTOCENE SEDIMENTS .. .. 72
Pre-Illinoian terrace gravels ...... 72
Illinoian (?) terrace gravels and till 73
Wisconsin terrace gravels and till 74
General distribution ........................ 74
Earlier studies in South Park ............. 74
General characteristics ................ 74
Description of individual areas of Wisconsin moraine . .. 76
Comparison with physiographic features in Arkansas Valley. ... 80
POST-PRE-CAMBRIAN IGNEOUS ROCKS ............. 81
Introduction. 31
Intrusive rocks 81
Eshe porphyry, Baker Lake porphyry, and differentiates.......81
Chalmers quartz monzonite 84
Oil well dike and related rocks.... 86
Porphyries of Little Black Mountain Type.. 92
Age of post-pre-Cambrian intrusions 94
Extrusive rocks ........................... 95
Basin Ridge group .................... 95
Thirtynine Mile volcanic series ........... 101
Buffalo Peaks andesite ................... 103
Trachyte and related rocks 105
STRUCTURAL GEOLOGY.. .... 110
Pre-Cambrian structural features . 110
Outline of structural features of the Park 112
Major folds 113
General statement 113
Michigan syncline ... 113
Como syncline ... 114
Basin Ridge syncline . 115
Mexican Ridge anticline 116
Antero syncline 118
Glentivar dome 118
Spring dome 119
South dome 119
Pony spring syncline 119
Major faults 120
General statement .... 120
Reverse faults........... 120
Normal faults 12
GEOLOGIC HISTORY OF SOUTH PARK. 132
Introductory remarks 132
Pre-Cambrian history ........... 132
Paleozoic history 133
Paleogeographic elements 133
Paleozoic sedimentation 133
Mesozoic history... 134
Sedimentary record 134
Laramide revolution ............... 135
Tertiary history 137
Early Eocene sedimentation and orogeny 137
Events of Later Tertiary ................... 138 Events of Pliocene (?), Pleistocene, and Recent ....... 141
Summary of glaciation and glacial deposits....... 144
Postglacial processes ................................. 145
Correlation of later South Park history with that of adjoining regions 146
General summary ............... 149
APPENDIX-REPRESENTATIVE SECTIONS ..................... 150
BIBLIOGRAPHY ....................174
INDEX......
18 illustrations, 22 figures
All pictures are of the actual item. There may be reflection from the lights in some photos. We try to take photos of any damage. If this is a railroad item, this material is obsolete and no longer in use by the railroad. Please email with questions. Publishers of Train Shed Cyclopedias and Stephans Railroad Directories. Large inventory of railroad books and magazines. Thank you for buying from us.
Shipping charges
US Shipments: When you add multiple items to your cart, the reduced shipping charges will automatically be calculated. .
Non US Shipments: For direct postage rates to these countries, send me an email. Shipping varies by weight.
Payment options
Payment must be received within 7 days. Paypal is accepted.
Terms and conditions
All sales are final. Returns accepted if item is not as described. Contact us before making a return. No warranty is stated or implied. Please e-mail us with any questions before bidding or buying.
Thanks for looking at our items.
| 
