Large scale pantelleritic ash flow eruptions during the Late Miocene in central Kenya and evidence for significant environmental impact

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Large scale pantelleritic ash flow eruptions during the Late Miocene in central Kenya and evidence for significant environmental impact

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作者：L. Claessens^a ; ^d ; ^{l.claessens@cgiar.org" class="auth_mail" title="E-mail the corresponding author} ; A. Veldkamp^b ; J.M. Schoorl^a ; J.R. Wijbrans^c ; W. van Gorp^a ; R. Macdonald^e ; ^f
关键词：Tuff ; Ash flow ; Ignimbrite ; Vitrophyre ; Peralkaline rhyolites ; 40Ar/39Ar geochronology
刊名：Global and Planetary Change
出版年：2016
出版时间：October 2016
年：2016
卷：145
期：Complete
页码：30-41
全文大小：3441 K

文摘

•: Four previously unrecorded pantelleritic tuffs have been located in Embu, Kenya.
•: The tuffs yielded ⁴⁰Ar/³⁹Ar ages ranging from 6.36 to 8.13 Ma.
•: The tuffs' occurrence indicates multi-cyclic supereruptions in the Late Miocene.
•: The timing coincides with a shift towards drier savannah-dominated environments.

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