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Cambrian and Early Ordovician Stratigraphy and Paleontology of the Basin and Range Province, Western United States: Las Vegas, Nevada to Salt Lake City, Utah, July 1 - 7, 1989, Volume T125

Cambrian and Early Ordovician Stratigraphy and Paleontology of the Basin and Range Province, Western United States: Las Vegas, Nevada to Salt Lake City, Utah, July 1 - 7, 1989, Volume T125

Michael E. Taylor (Editor)

ISBN: 978-1-118-66764-4

Mar 2013

86 pages

Select type: Wiley Online Book

Description

Published by the American Geophysical Union as part of the Field Trip Guidebooks Series, Volume 125.

Field Trip T125 of the 28th International Geological Congress will give participants a regional overview of the geology of the Basin and Range province and an introduction to Cambrian and Early Ordovician stratigraphy and paleontology. Emphasis will be placed on regional stratigraphy, depositional environments, biofacies and lithofacies relations, biostratigraphy, trilobite mass extinctions (“biomere boundaries”), evidence for eustatic sea-level changes, paleotectonic history, and paleogeographic reconstructions. A transect will be made across a Late Cambrian and Early Ordovician passive continental margin from deep-water-carbonate submarine-fan and slope facies in central Nevada to temporally equivalent shallow-water microbial bioherms, and carbonate sand and mud facies in eastern Nevada.

Chapter 1. Introduction and Background for Field Trip T125.
Michael E. Taylor 1

Chapter 2. Geology of the Basin and Range Province, Western United States:
An Overview.
Harry E. Cook 6

Chapter 3. Day 0: Early and Middle Cambrian Stratigraphy of Frenchman
Mountain, Nevada (Stop 0.1).
A. R. Palmer 14

Chapter 4. Day 1: Early Cambrian Stratigraphy and Paleontology, Southern
Great Basin, California-Nevada.
A. R. Palmer and Stephen M. Rowland 17

Stop 1.1: Carrara Formation, Titanothere Canyon, Death Valley National Park, California 17

Stop 1.2: Stewart's Mill Archaeocyath Reef, Esmeralda County, Nevada 24

Chapter 5. Day 2: Late Cambrian and Early Ordovician Stratigraphy, Biostratigraphy and Depositional Environments, Hot Creek Range, Nevada.
Harry E. Cook, Michael E. Taylor, and James F. Miller 28

Stop 2.1: Upper Cambrian Swarbrick Formation and Tybo Shale 32

Stop 2.2: Upper Tybo Shale and Hales Limestone 33

Stop 2.3 (optional): Currant Canyon, Horse Mountains-White Pine Range: Overview of Lower Paleozoic Stratigraphic Section 36

Chapter 6. Day 3: Late Cambrian and Early Ordovician Biostratigraphy and Depositional Environments of the Whipple Cave Formation and House Limestone, Central Egan Range, Nevada.
Michael E. Taylor, Harry E. Cook, and James F. Miller 37

Stop 3.1: Christmas Tree Canyon 37

Stop 3.2: Sawmill Canyon 39

Chapter 7. Day 4: Late Cambrian and Early Ordovician Stratigraphy and Biostratigraphy, Southern House Range (""Ibex Area""), Utah.
James F. Miller and Michael E. Taylor 45

Stop 4.1: Hellnmaria Member of Notch Peak Formation 45

Stop 4.2: Steamboat Pass and General Orientation to the Southern House Range-Ibex Area 46

Stop 4.3: Lava Dam Five Section 47

Stop 4.4 (Optional): Lower Ordovician Fillmore Formation, Skull Rock Pass 58

Chapter 8. Days 5 and 6: Cambrian Stratigraphy and Paleontology of the Central House Range and Drum Mountains, Utah.
Margaret N. Rees and Richard A. Robison 59

Day 5. Cambrian Stratigraphy and Paleontology of the Central House Range 65

Stop 5.1: Upper Cambrian Paleontology and Depositional Environments along Orr Ridge 65

Stop 5.2: Junction of Tule Valley Road and Old Highway U.S. 50/6 68

Stop 5.3: Howell Limestone and Chisholm Formation 68

Stop 5.4: Marjum and Weeks Formations 68

Stop 5.5: Sedimentary Features in Marjum Formation 68

Stop 5.6: Wheeler Amphitheater 68

Day 6. Middle Cambrian Stratigraphy and Paleontology of the Drum Mountains  69

Stop 6.1: Whirlwind, Swasey, and Wheeler Formations 69

Stop 6.2: Depositional Facies of the Wheeler and Pierson Cove Formations 71

Chapter 9. A Practical Field Guide for Evaluating Early Paleozoic Ichnofabric.
Mary L. Droser and David J. Bottjer 73

References Cited 77