ACID-NEUTRALIZING SCENARIO AFTER THE CRETACEOUS-TERTIARY IMPACT EVENT
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dc.contributor.author | Maruoka T. | |
dc.contributor.author | Koeberl C. | |
dc.date.accessioned | 2021-12-18T07:26:44Z | |
dc.date.available | 2021-12-18T07:26:44Z | |
dc.date.issued | 2003 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=32169456 | |
dc.identifier.citation | Geology, 2003, 31, 6, 489-492 | |
dc.identifier.issn | 0091-7613 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/33550 | |
dc.description.abstract | Acid rain from the Cretaceous-Tertiary (K-T) boundary impact event should have caused significant damage to freshwater life, but only minor extinctions of freshwater species are actually observed. We propose a mechanism to neutralize the acid using larnite (beta-Ca2SiO4), produced as a result of the specific lithology at the Chicxulub impact site. The impact vapor plume must have been enriched in calcium from the carbonate-rich target, leading to the crystallization of larnite. The acid-neutralizing capacity of the larnite grains would have been high enough to consume acid produced after the K-T event within several hours, reducing it to a level at which freshwater life would not have been affected, even if all the acid had precipitated instantaneously after the K-T impact. This scenario can explain some of the extinction selectivity at the K-T boundary. | |
dc.subject | impacts | |
dc.subject | K-T boundary | |
dc.subject | acid rain | |
dc.subject | mass extinction | |
dc.subject | Chicxulub crater | |
dc.subject | Cretaceous | |
dc.title | ACID-NEUTRALIZING SCENARIO AFTER THE CRETACEOUS-TERTIARY IMPACT EVENT | |
dc.type | Статья | |
dc.subject.age | Mesozoic::Cretaceous | |
dc.subject.age | Мезозой::Меловая | ru |
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