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Book Geological Survey Professional Paper

Download or read book Geological Survey Professional Paper written by Geological Survey (U.S.) and published by . This book was released on 1975 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Geological Survey Professional Paper

Download or read book Geological Survey Professional Paper written by and published by . This book was released on 1983 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book U S Geological Survey Professional Paper

Download or read book U S Geological Survey Professional Paper written by and published by . This book was released on 1974 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Late Paleocene early Eocene Climatic and Biotic Events in the Marine and Terrestrial Records

Download or read book Late Paleocene early Eocene Climatic and Biotic Events in the Marine and Terrestrial Records written by Marie-Pierre Aubry and published by Columbia University Press. This book was released on 1998 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive collection of the best scholarship available on the transition between the Paleocene and Eocene epochs--when the earth experienced the warmest climatic episode of the Cenozoic era. These 21 contributions detail the major turnover among marine and terrestrial organisms that resulted from sudden global warming.

Book Paleocene Biostratigraphy of the Simi Hills Ventura County California

Download or read book Paleocene Biostratigraphy of the Simi Hills Ventura County California written by William J. Zinsmeister and published by . This book was released on 1974 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Turritella Zonation Across the Cretaceous Tertiary Boundary California

Download or read book Turritella Zonation Across the Cretaceous Tertiary Boundary California written by Louella Rankin Saul and published by Univ of California Press. This book was released on 1983-01-01 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Late Cretaceous and Cenozoic Mammals of North America

Download or read book Late Cretaceous and Cenozoic Mammals of North America written by Michael O. Woodburne and published by Columbia University Press. This book was released on 2004-04-21 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book places into modern context the information by which North American mammalian paleontologists recognize, divide, calibrate, and discuss intervals of mammalian evolution known as North American Land Mammal Ages. It incorporates new information on the systematic biology of the fossil record and utilizes the many recent advances in geochronologic methods and their results. The book describes the increasingly highly resolved stratigraphy into which all available temporally significant data and applications are integrated. Extensive temporal coverage includes the Lancian part of the Late Cretaceous, and geographical coverage includes information from Mexico, an integral part of the North American fauna, past and present.

Book From Greenhouse to Icehouse

Download or read book From Greenhouse to Icehouse written by Donald R. Prothero and published by Columbia University Press. This book was released on 2003 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: The marine Eocene-Oligocene transition of 34 million years ago was a critical turning point in Earth's climatic history, when the warm, high-diversity "greenhouse" world of the early Eocene ceded to the glacial, "icehouse" conditions of the early Oligocene. This book surveys the advances in stratigraphic and paleontological research and isotopic analysis made since 1989 in regard to marine deposits around the world. In particular, it summarizes the high-resolution details of the so-called doubthouse interval (roughly 45 to 34 million years ago), which is critical to testing climatic and evolutionary hypotheses about the Eocene deterioration. The authors' goals are to discuss the latest information concerning climatic and oceanographic change associated with this transition and to examine geographic and taxonomic patterns in biotic turnover that provide clues about where, when, and how fast these environmental changes happened. They address a range of topics, including the tectonic and paleogeographic setting of the Paleogene; specific issues related to the stratigraphy of shelf deposits; advances in recognizing and correlating boundary sections; trends in the expression of climate change; and patterns of faunal and floral turnover. In the process, they produce a valuable synthesis of patterns of change by latitude and environment.

Book U S Geological Survey Bulletin

Download or read book U S Geological Survey Bulletin written by and published by . This book was released on 1983 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book U S Geological Survey Bulletin

Download or read book U S Geological Survey Bulletin written by Colin F. Williams and published by . This book was released on 1983 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phosphatic concretions occur within diatomite in the upper part of the Miocene Monterey Formation near Lompoc, Calif. Absence of disruption of fine laminar bedding in the associated sediment by the concretions shows that they formed after complete compaction of the enclosing sediment.The concretions exhibit a strongly concentric color, chemical, and mineralogic zonation. Many of them are composed of a nucleus in which vivianite is the dominant mineral. Amorphous ferric phosphate, mitridatite, and francolite are the dominant phosphatic phases in successive layers toward the surface of the concretions. Cd and As contents increase tenfold from the nucleus outward, reaching a maximum of 2,000 ppm, whereas Ni content, with a maximum of 720 ppm, and Co content show the opposite trend. This mineralogy and elemental composition favor accretion under conditions of continuously increasing Eh and pH, during uplift into the fresh-ground-water zone of the terrestrial environment. Shale-normalized rare-earth-element patterns, however, suggest a marine source for the elements biogenic debris consisting of opal-A, organic matter, and carbonates of the enclosing sediment.

Book California Geology

Download or read book California Geology written by and published by . This book was released on 1975 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Communities of the Past

Download or read book Communities of the Past written by Jane Gray and published by . This book was released on 1981 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: