Global Catastrophes in Earth History; An Interdisciplinary Conference on Impacts, Volcanism, and Mass Mortality

Copertina anteriore
Virgil L. Sharpton, Peter D. Ward
Geological Society of America, 1990 - 631 pagine
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The conference was held in Snowbird, Utah, October 1988, as a sequel to the Conference on Large Body Impacts held in 1981, also in Snowbird. This volume contains 58 peer-reviewed papers, arranged into sections that cover the major themes of the conference: catastrophic impacts, volcanism, and mass mortality; geological signatures of impacts; environmental effects of impacts; patterns of mass mortality; volcanism and its effects; case histories of mass mortalities; and events and extinctions at the K/T boundary. Annotation copyrighted by Book News, Inc., Portland, OR
 

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Indice

Periodicity in flood basalts mass extinctions and impacts
9
On impacts as a cause of geomagnetic field reversals or flood
19
A feasibility test
27
The taxonomic structure of periodic extinction
33
Iridium abundance patterns across bioevent horizons
45
Carbonisotope anomalies at era boundaries Global
61
Chondritic metal toxicity as a seed stock kill mechanism
71
A search for Nemesis Current status and review of history
87
A closer look at cathodoluminescence of shocked quartz
343
Detritus in K T boundary clays of western North America
349
The significance of magnetic spheroids and magnesioferrite
359
Traceelement geochemistry and mineralogy of the Cretaceous
367
Early environmental effects of the terminal Cretaceous
383
Major wildfires at the Cretaceous Tertiary boundary
391
Deccan volcanism at the Cretaceous Tertiary boundary
401
Boundaries A stratigraphic and sedimentologic
411

Interdisciplinary aspects of research on impacts and mass
93
Assessment of the atmospheric impact of volcanic eruptions
99
Iridium and other tracemetal enrichments from
111
I4 Deccan volcanism greenhouse warming and
117
A paradigm for endogenous causation of mass extinctions
125
Explosive volcanism and associated pressures Implications
139
I7 Impact and its revolutionary implications for geology
147
Asteroid and comet flux in the neighborhood of Earth
155
I9 The cometary impactor flux at the Earth
171
Application of the inner Solar System cratering record to
185
The formation of the Ries Crater West Germany Evidence
195
Geology geophysics and geochronology of the Manson impact
207
Comets and extinctions Cause and effect?
223
The KaraUstKara twin impact structure A largescale
233
Atmospheric chemistry by large impacts
271
Atmospheric erosion and impactor retention in large impacts with
289
Meteorite impact cryptoexplosion and shock metamorphism
301
Chemistry and mineralogy across the Cretaceous Tertiary
319
Shocked quartz and more Impact signatures in Cretaceous
335
Diachronous extinctions at the K T boundary A scenario
417
The Cretaceous Tertiary extinctions in the marine realm
425
Megafloral change across the C retaceous Tertiary boundary
433
Plant microfossil record of the terminal Cretaceous event
445
Palynofloral response to K T boundary events A transitory
457
Faunal erosional and CaCO3 events in the early
471
Late Cretaceousearly Eocene mass extinctions in
481
The effects of bioturbation across a biostratigraphically
497
Extinction pattern of Inoceramus Bivalvia based
509
A review of Maastrichtian ammonite ranges
519
Selective extinction of marine plankton in the Paratethys
531
Rocks resolution and the record A review of depositional
541
Differential Cretaceous Tertiary extinctions of nonmarine
549
The Cretaceous Tertiary boundary impact hypothesis
563
The end Triassic mass extinction event
577
The T riassicJurassic boundary in continental rocks
585
Effects of late Eocene impacts on planktonicforaminifera
595
Geochronology of the terminal Eocene impacts An update
607
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