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Cretaceous Shelf Sandstones and Shelf Depositional Sequences, Western Interior Basin, Utah, Colorado and New Mexico: Salt Lake City, Utah to Albuquerque, New Mexico, June 30 - July 7, 1989, Volume T119

Cretaceous Shelf Sandstones and Shelf Depositional Sequences, Western Interior Basin, Utah, Colorado and New Mexico: Salt Lake City, Utah to Albuquerque, New Mexico, June 30 - July 7, 1989, Volume T119

Dag Nummedal (Editor), Robyn Wright (Editor), Rex Cole (Editor), Robert Remy (Editor)

ISBN: 978-1-118-66715-6

Mar 2013

87 pages

Select type: Wiley Online Book

Description

Published by the American Geophysical Union as part of the Field Trip Guidebooks Series, Volume 119.

This field guide is divided into four chapters for the purpose of introducing the general geological background to each of the major themes that will be addressed during the trip. The first theme concerns lacustrine sedimentation as exemplified by the exposures of the Eocene Green River Formation in Nine Mile Canyon, Utah. The particular facies included in the trip are deltaic and shallow lacustrine and one of the reasons for including these stops is to evaluate similarities and differences between sedimentary processes in large lakes and shallow marine environments.

The second theme focuses on Upper Cretaceous coastal and shallow marine rocks as displayed by exposures in the spectacular Book Cliffs of Utah. The shelf and shoreface sequences seen in these rocks represent some of the classical exposures of such facies in the United States. Due to high rates of sediment yield from the nearby actively uplifting Cretaceous Sevier orogenic belt, the Mesaverde Group in the Book Cliffs is dominated by regressive sequences, punctuated by regionally extensive unconformities.

FIELD TRIP ITINERARY vi

PREFACE viii

CHAPTER 1. DELTAIC AND LACUSTRINE FACIES OF THE GREEN RIVER FORMATION, SOUTHERN UINTA BASIN, UTAH
Robert R. Remy  1

Introduction 1

Stop 2. Tucker Rest Area. Fine-Grained Marginal-Lacustrine and Open-Lacustrine Facies 1
Field Guide to Nine Mile Canyon 2

Stop 3. Carbonate Marker Unit (Mile 31.7) 3

Stop 4. Transgressive/Regressive Cycles and Depositional Environments (Mile 39.8) 4

Stop 5. Deltaic Facies (Mile 53.4) 8

Stop 6. Shallow-Lacustrine Facies (Mile 58.7) 10

CHAPTER 2. STRATIGRAPHY AND SEDIMENTATION OF THE BOOK CLIFFS, UTAH
Rex D. Cole and James F. Friberg  13

Introduction 13

Late Cretaceous Depositional Setting 14

Stop 1. Red Narrows. Castlegate Sandstone 15

Stop 7. Helper Overlook. Book Cliffs Stratigraphy 16

Stop 8. Gilson Gulch. Blackhawk Formation 18

Stop 9. Price River Canyon. Castlegate Sandstone 19

Stop 10. Thompson Canyon. Blackhawk Formation and Castlegate Sandstone 20

Stops 11 (Dead Horse Point) and 12 (Arches National Monument) 23

CHAPTER 3. COASTAL AND SHALLOW MARINE CYCLICITY
Robyn Wright, Danny Katzman, Melissa J. Montz, Robert S. Zech  25

Cycle Ranking 25

High-Frequency Pelagic Cycles 25

High-Frequency Nearshore Cycles 26

Possible Forcing Mechanisms 27

Stop 13. Mancos Canyon. Point Lookout Sandstone 28

CHAPTER 4. DEPOSITIONAL SYSTEMS ARCHITECTURE OF SHALLOW MARINE SEQUENCES
Dag Nummedal, Robyn Wright, Donald J. P. Swift, Roderick W. Tillman, and Niels R. Wolter  35

Sequence Stratigraphic Concepts 35

San Juan Basin Chronostratigraphy 38

Stop 14. Ship Rock Wash. Stratigraphy of Gallup and Tocito Sandstones 38

Stop 15. Hogback Oil Field. Tocito Sandstone 45

Stop 16. Chaco River. Tocito Sandstone 48

Stop 17. Chaco Culture National Historic Park 50

Stop 18. Chaco Canyon. Cliff House Sandstone 53

Stop 19. Borrego Pass. Borrego Pass Sandstone 54

Stop 20. Nose Rock Point. Gallup Sandstone 59

Stop 21. Cliff-Face East of Nose Rock Point. Gallup Sandstone 64

Stop 22. Ambrosia Lake. Borrego Pass Sandstone  66

Stop 23. Canipa Mesa. Twowells Tongue of Dakota Sandstone  70

Stop 24. South Oak Canyon Mesa. K/J Boundary  73

REFERENCES (FOR ENTIRE GUIDEBOOK)  81