[PDF] The Cretaceous Tertiary K T Boundary Interval Raton Basin Colorado And New Mexico And Its Content Of Shock Metamorphosed Minerals eBook

Author : Walter Alvarez
Publisher : Princeton University Press
Page : 208 pages
File Size : 41,91 MB
Release : 2015-09-15
Category : Science
ISBN : 0691169667

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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.

Author : Graham Ryder
Publisher : Geological Society of America
Page : 586 pages
File Size : 23,85 MB
Release : 1996-01-01
Category : Science
ISBN : 9780813723075

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"This volume atempts to explore and clarify the relationship among the geological records, the extinctions, and the causes of catastrophes for life in Earth's history. Most of the papers address the geological record and the extinctions across the Cretaceou-Teriary boundary, and the buried Chicxulub structure that is now consensually deemed to be of impact origin and to be intimately related to that boundary." (GSA website).

Author : Wolf Uwe Reimold
Publisher : Geological Society of America
Page : 644 pages
File Size : 39,54 MB
Release : 2021-09-23
Category : Science
ISBN : 081372550X

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"This volume contains a sizable suite of contributions dealing with regional impact records (Australia, Sweden), impact craters and impactites, early Archean impacts and geophysical characteristics of impact structures, shock metamorphic investigations, post-impact hydrothermalism, and structural geology and morphometry of impact structures - on Earth and Mars"--

Author : Christian Koeberl
Publisher : Geological Society of America
Page : pages
File Size : 38,78 MB
Release : 2022-08-01
Category : Science
ISBN : 0813725577

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"This volume pays tribute to the career and scientific accomplishments of Walter Alvarez with papers related to the many topics he has covered : tectonics of microplates, structural geology, paleomagnetics, Apennine sedimentary sequences, geoarchaeology and Roman volcanics, Big History, and the discovery of evidence for a large asteroidal impact event at the Cretaceous-Tertiary (now Cretaceous-Paleogene) boundary site in Gubbio, Italy"--

Author : Alessandro Montanari
Publisher : Springer Science & Business Media
Page : 388 pages
File Size : 22,96 MB
Release : 2002-07-09
Category : Science
ISBN : 9783540663683

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This book provides a general introduction to impact stratigraphy, with emphasis on the recognition of distal impact ejecta in the field, by focusing on the impactoclastic layers of the Umbria-Marche sequence in Central Italy, with an almost perfect stratigraphic record over the last 200 Million years. A general introduction to impact cratering and a discussion of distal ejecta and impact layers around the world is followed by a detailed description of the record of the impact of extraterrestrial bodies in sediments of the Umbria-Marche Apennines. The volume is of interest to a diverse audience in the geological and planetary sciences, ranging from (upper) undergraduate to research level. This book can also be used by students and researchers as a field guide to some of the most important Italian impact layers.

Author : Billy P. Glass
Publisher : Springer Science & Business Media
Page : 723 pages
File Size : 50,15 MB
Release : 2012-12-14
Category : Science
ISBN : 3540882626

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Impact cratering is an important geological process on all solid planetary bodies, and, in the case of Earth, may have had major climatic and biological effects. Most terrestrial impact craters have been erased or modified beyond recognition. However, major impacts throw ejecta over large areas of the Earth's surface. Recognition of these impact ejecta layers can help fill in the gaps in the terrestrial cratering record and at the same time provide direct correlation between major impacts and other geological events, such as climatic changes and mass extinctions. This book provides the first summary of known distal impact ejecta layers