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An extraterrestrial trigger for the mid-Ordovician ice age: Dust from the breakup of the L-chondrite parent body

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dc.contributor.author Schmitz B.
dc.contributor.author Farley K.
dc.contributor.author Goderis S.
dc.contributor.author Heck P.
dc.contributor.author Bergström S.
dc.contributor.author Boschi S.
dc.contributor.author Claeys P.
dc.contributor.author Debaille V.
dc.contributor.author Dronov A.
dc.contributor.author van Ginneken M.
dc.contributor.author Harper D.
dc.contributor.author Iqbal F.
dc.contributor.author Friberg J.
dc.contributor.author Liao S.
dc.contributor.author Martin E.
dc.contributor.author Meier M.
dc.contributor.author Peucker-Ehrenbrink B.
dc.contributor.author Soens B.
dc.contributor.author Wieler R.
dc.contributor.author Terfelt F.
dc.date.accessioned 2020-01-22T20:44:18Z
dc.date.available 2020-01-22T20:44:18Z
dc.date.issued 2019
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/158027
dc.description.abstract Copyright © 2019 The Authors, The breakup of the L-chondrite parent body in the asteroid belt 466 million years (Ma) ago still delivers almost a third of all meteorites falling on Earth. Our new extraterrestrial chromite and 3He data for Ordovician sediments show that the breakup took place just at the onset of a major, eustatic sea level fall previously attributed to an Ordovician ice age. Shortly after the breakup, the flux to Earth of the most fine-grained, extraterrestrial material increased by three to four orders of magnitude. In the present stratosphere, extraterrestrial dust represents 1% of all the dust and has no climatic significance. Extraordinary amounts of dust in the entire inner solar system during >2 Ma following the L-chondrite breakup cooled Earth and triggered Ordovician icehouse conditions, sea level fall, and major faunal turnovers related to the Great Ordovician Biodiversification Event.
dc.title An extraterrestrial trigger for the mid-Ordovician ice age: Dust from the breakup of the L-chondrite parent body
dc.type Article
dc.relation.ispartofseries-issue 9
dc.relation.ispartofseries-volume 5
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS-2019-5-9-SID85072309122


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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