Download or read book Australia s Meteorite Craters written by Kenneth McNamara and published by Western Australian Museum. This book was released on 2010-01-01 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: On Earth, catastrophic impact of an asteroid or comet with truly global consequences has not happened during our written history, and the threat seems very small. Giant scars on our planet’s surface are relics of an impact history stretching back more than 2 billion years, and there is no assurance it cannot happen again. In Australia there are 36 structures ranging from tens of metres to tens of kilometres in diameter, and recognised to varying degrees of certainty as having been formed by giant meteorite impact. In clear and concise language this book begins with ancient beliefs and myths about craters and then explains how they are actually formed and provides details of their structure. Using the record in the rocks, the authors also assess the likelihood of future impacts and their possible effects.
Download or read book Henbury Craters and Meteorites written by Svend Buhl and published by Springer. This book was released on 2015-01-15 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1931, the cluster of craters at Henbury Cattle Station south of Alice Springs in Central Australia was one of the first places on Earth where a group of impact structures could definitely be linked to the fall of iron meteorites. It was also the first place where radial rays and loops of ejected rock material, comparable to those seen around craters on the Moon, were observed. As such it was one of the primary observation sites associated with the science of meteoritics in its infancy. In this work the authors present previously unpublished documents covering early research at the Henbury site, provide an extended data set on the distribution of meteoritic material at Henbury craters, and compare recent discoveries on the mechanics of hypervelocity impacts with evidence collected over 80 years of research at the Henbury meteorite craters. In their conclusion, the authors suggest a new hypothesis for the fragmentation and incident direction of the crater-forming bolide, on the basis of a more complete set of data compared with previous models.
Download or read book Australia s Meteorite Craters written by Alex Bevan and published by . This book was released on 2013-01-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Geology of the Henbury Meteorite Craters Northern Territory Australia written by Daniel J. Milton and published by . This book was released on 1968 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A group of small craters that exhibit an unusually wide variety of structural features.
Download or read book Large Meteorite Impacts and Planetary Evolution VI written by Wolf Uwe Reimold and published by Geological Society of America. This book was released on 2021-09-23 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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"--
Download or read book Australia s Meteorite Craters written by Alex Bevan and published by . This book was released on 1993 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedic Atlas of Terrestrial Impact Craters written by Enrico Flamini and published by Springer. This book was released on 2019-06-25 with total page 691 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive atlas explains the genesis and evolution of impact known craters on Earth, presenting a wealth of radar images from the Italian COSMO-SkyMed satellites that were acquired at the same frequency, spatial resolution, operating mode, and illumination, allowing excellent comparison of different impact structures. It also discusses in detail the processes that have hidden or erased terrestrial impact craters, and clearly explains the basic principles of remote sensing and the COSMO-SkyMed system and radar instruments. Also, the optical satellite remote sensing technique used to produce the optical images is described. The main section documents each of the exposed craters officially recognized as caused by meteoritic impact, presenting a table with the COSMO-SkyMed radar image and, where available, a Sentinel optical image and a photograph taken in situ. A short accompanying text reports the location, context, geographical coordinates, and other ancillary information to support future researches.
Download or read book Asteroids Impacts Crustal Evolution and Related Mineral Systems with Special Reference to Australia written by Andrew Y. Glikson and published by Springer. This book was released on 2018-03-12 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of Australian impact structures and related mineralization, including a discussion of the significance of many of these structures for crustal evolution. The book focuses in particular on Archaean impact ejecta/fallout units in the Pilbara Craton of Western Australia, large exposed and buried impact structures, and on the geophysical evidence for possible to probable impact structures. Thanks to their long-term geological stability, Precambrian and younger terrains in the Australian continent contain 38 confirmed impact structures and 43 ring and dome structures, many of which constitute possible to probable asteroid impact structures. The impact structures have been the subject of more than half a century of studies and range from several tens of meter-large craters to buried structures larger than 100 km in diameter. Discoveries of impact fallout units in the Pilbara Craton have defined the Pilbara as one of the two best documented terrains where Archaean impact ejecta/fallout deposits are identified, the other terrain being the Kaapvaal Craton in southern Africa. A synthesis of evidence from both cratons indicates periods of large asteroid bombardments during ~3.47 – 2.48 billion years-ago, including peak bombardment about 3.25—3.22 billion years-ago. The latter period coincides with an abrupt transformation of an early Archaean granite-greenstone crust to mid to late Archaean semi-continental crustal regimes, underpinning the significance of heavy asteroid impact events for crustal evolution. Apart from proven impact structures, Australian terrains display a range of circular features, including morphological and drainage rings, circular lakes, volcanic craters, tectonic domes, oval granite bodies, mafic igneous plugs, salt diapirs, and magnetic, gravity and seismic anomalies, many of which are of a likely impact origin. Thermal and hydrothermal processes associated with impact cratering bear important consequences for the formation of mineral deposits, such as Ni at Sudbury, Pb-Zn at Siljan and Kentland. Impact structures may also provide sites for the accumulation of hydrocarbons, whereas in some instances fracturing associated with impact structures allows outward migration of oil and gas.
Download or read book Meteorite Craters and Impact Structures of the Earth written by Paul W. Hodge and published by Cambridge University Press. This book was released on 1994-08-04 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The essential guide to 139 sites where the Earth has had a direct hit from space.
Download or read book Impact Craters of Earth written by Thomas Wm. Hamilton and published by Strategic Book Publishing & Rights Agency. This book was released on 2014-08-27 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Craters have been found on planets and moons throughout the solar system, caused when asteroids or meteors have collided with them. Our Earth has not escaped these impacts, and nearly 200 craters are known on Earth today. Some are easily visited, others are in locations few would ever want to get near. This book details all the known terrestrial impact craters, telling their age, size, and other details, as well as highlighting those easily visited. One has an annual “Craterfest” to attract tourists, while it is possible to swim in lakes that have filled others.
Download or read book The Chesapeake Bay Crater written by Wylie Poag and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have synthesized 16 years of geological and geophysical studies which document an 85-km-wide impact crater buried 500 m beneath Chesapeake Bay in south eastern Virginia, USA. In doing so, they have integrated extensive seismic reflection profiling and deep core drilling to analyze the structure, morphology, gravimetrics, sedimentology, petrology, geochemistry, and paleontology of this submarine structure. Of special interest are a detailed comparison with other terrestrial and extraterrestrial craters, as well as a conceptual model and computer simulation of the impact. The extensive illustrations encompass more than 150 line drawings and core photographs.
Download or read book Comet Asteroid Impacts and Human Society written by Peter T. Bobrowsky and published by Springer Science & Business Media. This book was released on 2007-06-10 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading specialists in various disciplines were first invited to a multidisciplinary workshop funded by ICSU on the topic to gain a better appreciation and perspective on the subject of comet/asteroid impacts as viewed by different disciplines. This volume provides a necessary link between various disciplines and comet/asteroid impacts.
Download or read book The Asteroid Impact Connection of Planetary Evolution written by Andrew Y. Glikson and published by Springer Science & Business Media. This book was released on 2013-03-25 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: When in 1981 Louis and Walter Alvarez, the father and son team, unearthed a tell-tale Iridium-rich sedimentary horizon at the 65 million years-old Cretaceous-Tertiary boundary at Gubbio, Italy, their find heralded a paradigm shift in the study of terrestrial evolution. Since the 1980s the discovery and study of asteroid impact ejecta in the oldest well-preserved terrains of Western Australia and South Africa, by Don Lowe, Gary Byerly, Bruce Simonson, Scott Hassler, the author and others, and the documentation of new exposed and buried impact structures in several continents, have led to a resurgence of the idea of the catastrophism theory of Cuvier, previously largely supplanted by the uniformitarian theory of Hutton and Lyell. Several mass extinction of species events are known to have occurred in temporal proximity to large asteroid impacts, global volcanic eruptions and continental splitting. Likely links are observed between asteroid clusters and the 580 Ma acritarch radiation, end-Devonian extinction, end-Triassic extinction and end-Jurassic extinction. New discoveries of ~3.5 – 3.2 Ga-old impact fallout units in South Africa have led Don Lowe and Gary Byerly to propose a protracted prolongation of the Late Heavy Bombardment (~3.95-3.85 Ga) in the Earth-Moon system. Given the difficulty in identifying asteroid impact ejecta units and buried impact structures, it is likely new discoveries of impact signatures are in store, which would further profoundly alter models of terrestrial evolution. .
Download or read book Terrestrial Impact Structures written by Manfred Gottwald and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Geology of Australia written by Robert Henderson and published by Cambridge University Press. This book was released on 2016-09-06 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: First two editions have David Johnson listed as only author.
Download or read book Meteorite Craters written by Kathleen Mark and published by University of Arizona Press. This book was released on 1995-09-01 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scientific community has argued for decades over the origin of giant craters on the earth. In a highly readable fashion, Kathleen Mark recounts the fascinating detective story of how scientists came to recognize metorite craters, both ancient and relatively recent.
Download or read book Meteorites written by Monica M. Grady and published by Geological Society of London. This book was released on 1998 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: The impact of extraterrestrial material on Earth can lead to effects traceable in both the geological and biological record. This study describes meteorite flux with time, covering small and large bodies capable of producing craters. The effects of impacts on the environment is also covered focusing specifically on the Cretaceous-Tertiary mass extinction event.
