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:
Download or read book The Cretaceous Tertiary Boundary in California written by Mahlon Vincent Kirk and published by . This book was released on 1950 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of mammalia and geology across the Cretaceous Tertiary boundary in Garfield County Montana written by J. David Archibald and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turitella Zonation Across the Cretaceous Tertiary Boundary California written by Louella R. Saul and published by . This book was released on 1983-01-01 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Non dinosaurian Lower Vertebrates Across the Cretaceous Tertiary Boundary in Northeastern Montana written by Laurie J. Bryant and published by Univ of California Press. This book was released on 1989-01-01 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: 00 This study presents current data on vertebrate survival and extinction across the Cretaceous-Tertiary boundary in Montana. Nearly all the common taxa of reptiles (except dinosaurs), amphibians, and fish survived the end of the Cretaceous Period; extinctions were concentrated among rare groups and those found in near-shore habitats. The author concludes that ocean regression and climatic deterioration may explain these selective extinction patterns better than catastrophic hypotheses. This study presents current data on vertebrate survival and extinction across the Cretaceous-Tertiary boundary in Montana. Nearly all the common taxa of reptiles (except dinosaurs), amphibians, and fish survived the end of the Cretaceous Period; extinctions were concentrated among rare groups and those found in near-shore habitats. The author concludes that ocean regression and climatic deterioration may explain these selective extinction patterns better than catastrophic hypotheses.
Download or read book The Bug Creek Problem and the Cretaceous Tertiary Transition at McGuire Creek Montana written by Donald L. Lofgren and published by Univ of California Press. This book was released on 1995-08-31 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bug Creek assemblages from Montana, transitional in composition between typical Cretaceous and Paleocene vertebrate faunas, are critical to K-T extinction debates because they have been used to support both gradual and catastrophic K-T extinction scenarios. Geological and palynological data from McGuire Creek indicate that Bug Creek assemblages are Paleocene and restricted to channel fills entrenched into older sediments, suggesting that the Cretaceous component of the assemblage was reworked. Thus, the author concludes, "Paleocene dinosaurs" are an illusion and the K-T survival rate of mammals is low because the presence of Cretaceous mammals in Bug Creek assemblages is also the result of reworking.
Download or read book The Cretaceous Tertiary Boundary in the San Juan and Raton Basins New Mexico and Colorado written by James E. Fassett and published by Geological Society of America. This book was released on 1987 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Hell Creek Formation and the Cretaceous Tertiary Boundary in the Northern Great Plains written by Joseph Herbert Hartman and published by Geological Society of America. This book was released on 2002 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Through the End of the Cretaceous in the Type Locality of the Hell Creek Formation in Montana and Adjacent Areas written by Gregory P. Wilson and published by Geological Society of America. This book was released on 2014-01-21 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The chapters represent a surge of field and laboratory research activity, illustrating the impacts of new and refined methods and tools. This volume explores geologic and biologic history preserved in the strata bounding the Cretaceous-Paleogene boundary"--Provided by publisher.
Download or read book University of California Publications in Geological Sciences written by Laurie J. Bryant and published by . This book was released on 1989 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book University of California Publications Bulletin of the Department of Geological Sciences written by University of California, Berkeley and published by . This book was released on 1989 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Cretaceous Tertiary boundary interval Raton Basin Colorado and New Mexico and its content of shock metamorphosed minerals Evidence relevant to the K T boundary impact extinction theory written by Glen A. Izett and published by Geological Society of America. This book was released on 1990 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book T rex and the Crater of Doom written by Walter Alvarez and published by Princeton University Press. This book was released on 2015-09-15 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sixty-five million years ago, a comet or asteroid larger than Mount Everest slammed into the Earth, inducing an explosion equivalent to the detonation of a hundred million hydrogen bombs. Vaporized detritus blasted through the atmosphere upon impact, falling back to Earth around the globe. Disastrous environmental consequences ensued: a giant tsunami, continent-scale wildfires, darkness, and cold, followed by sweltering greenhouse heat. When conditions returned to normal, half the plant and animal genera on Earth had perished. This horrific chain of events is now widely accepted as the solution to a great scientific mystery: what caused the extinction of the dinosaurs? Walter Alvarez, one of the Berkeley scientists who discovered evidence of the impact, tells the story behind the development of the initially controversial theory. It is a saga of high adventure in remote locations, of arduous data collection and intellectual struggle, of long periods of frustration ended by sudden breakthroughs, of friendships made and lost, and of the exhilaration of discovery that forever altered our understanding of Earth's geological history.
Download or read book Gabb s California Cretaceous Tertiary Type Lamellibranchs Special Publications of The Acad of Natural Sciences of Phila No 3 written by and published by Academy of Natural Sciences. This book was released on with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Cretaceous Tertiary Boundary Interval Raton Basin Colorado and New Mexico and Its Content of Shock metamorphosed Minerals written by Glen Arthur Izett and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of the Cretaceous Tertiary Boundary Impact Events and the 0 77 Ma Australasian Tektite Event written by E. C. T. Chao and published by . This book was released on 1993 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reinterpretation of iridium anomalies, shocked quartz, and microtektites attributed to cratering events in Cretaceous-Tertiary boundary sections. Evidence from the Ries crater of Germany and Australasian tektites is essential to understanding giant craters and mass extinction.
Download or read book New Publications of the U S Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1990 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
