Read e-book online Cambrian and Early Ordovician Stratigraphy and Paleontology PDF

ISBN-10: 0875906621

ISBN-13: 9780875906621

ISBN-10: 1118667646

ISBN-13: 9781118667644

About The Product

Published by way of the yankee Geophysical Union as a part of the Field journey Guidebooks Series.

box journey T125 of the twenty eighth overseas Geological Congress will supply individuals a neighborhood evaluation of the geology of the Basin and variety province and an creation to Cambrian and Early Ordovician stratigraphy and paleontology. Emphasis might be put on nearby stratigraphy, depositional environments, biofacies and lithofacies family members, biostratigraphy, trilobite mass extinctions ("biomere boundaries"), proof for eustatic sea-level alterations, paleotectonic background, and paleogeographic reconstructions. A transect may be made throughout a overdue Cambrian and Early Ordovician passive continental margin from deep-water-carbonate submarine-fan and slope facies in crucial Nevada to temporally an identical shallow-water microbial bioherms, and carbonate sand and dirt facies in japanese Nevada.

Content:
Chapter 2 Geology of the Basin and diversity Province, Western usa: an outline (pages 6–13): Harry E. Cook
Chapter three Day zero: Early and center Cambrian Stratigraphy of Frenchman Mountain, Nevada (pages 14–16): A. R. Palmer
Chapter four Day 1: Early Cambrian Stratigraphy and Paleontology, Southern nice Basin, California?Nevada (pages 17–27): A. R. Palmer and Stephen M. Rowland
Chapter five Day 2: overdue Cambrian and Early Ordovician Stratigraphy, Biostratigraphy and Depositional Environments, sizzling Creek diversity, Nevada (pages 28–36): Harry E. prepare dinner, Michael E. Taylor and James F. Miller
Chapter 6 Day three: overdue Cambrian and Early Ordovician Biostratigraphy and Depositional Environments of the Whipple Cave Formation and condominium Limestone, principal Egan diversity, Nevada (pages 37–44): Michael E. Taylor, Harry E. prepare dinner and James F. Miller
Chapter 7 Day four: past due Cambrian and Early Ordovician Stratigraphy and Biostratigraphy, Southern condo variety (“Ibex Area”), Utah (pages 45–58): James F. Miller and Michael E. Taylor
Chapter eight Days five and six: Cambrian Stratigraphy and Paleontology of the vital residence variety and Drum Mountains, Utah (pages 59–72): Margaret N. Rees and Richard A. Robison
Chapter nine a realistic box consultant for comparing Early Paleozoic Ichnofabric (pages 73–86): Mary L. Droser and David J. Bottjer

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Extra info for 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

Example text

T Drumaspis? T Eurekia T Idiomesus T Leiocoryphe T • • • • • Plicatoiina Rlchardsoneila l,T Saratogia T Tatonaspis? T Triarthropsis T I - In situ occurrence in the Hales Limestone T - Transported occurrence in the Hales Limestone • - Known to occur ? - Occurrence uncertain or identification uncertain F I G U R E 5-4 Late Cambrian trilobite genera from the Hales Limestone compared with occurrences in some areas in Asia and other sites in North America. M o r e detailed discussion of paleozoogeography is given in Taylor (1976, 1977).

T h e Tybo Shale overlies the Swarbrick Formation. T h e contact between the two formations is enigmatic. 1). T h e thickness of the Tybo is estimated to b e about 500 m, but structural deformation and p o o r exposures preclude a precise measurement in Tybo Canyon. 2 in U p p e r Cambrian and Lower Ordovician rocks of Tybo Canyon, H o t Creek Range, Nevada. Inferred environments are shown in planimetric view. See text for description of lithofacies characteristics. No relative scales are implied.

N 3 Fryxellodontus Inornatus •o O Hirsutodontus Cor "5. •o | hlrsutus Cambroolstodus mlnutus 3 O Eoconodontus O o iu notchpeakensis Proconodontus muellerl No Zonation Established F I G U R E 5-3 Observed ranges of conodonts and trilobites in upper part of the Tybo Shale and t h e Hales Limestone, Tybo Canyon, H o t Creek Range, Nevada. Detailed trilobite data are given in Taylor (1976); conodont data are new. Asterisks indicate trilobite taxa that are redeposited at Tybo, but are autochthonous in shoal-water habitats of the Whipple Cave Formation, central Egan Range.

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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


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