Geology and geochronology of the Tana Basin, Ethiopia: LIP volcanism, super eruptions and Eocene-Oligocene environmental change
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- 作者：A.R. Pravea ; ap13@st-andrews.ac.uk" class="auth_mail" title="E-mail the corresponding author ; C.R. Batesa ; C.H. Donaldsona ; H. Tolandb ; D.J. Condonc ; D. Markd ; T.D. Rauba
- 关键词：LIP ; Eocene&ndash ; Oligocene transition ; Lake Tana ; flood basalt ; super eruption
- 刊名：Earth and Planetary Science Letters
- 出版年：2016
- 出版时间：1 June 2016
- 年：2016
- 卷：443
- 期：Complete
- 页码：1-8
- 全文大小：4001 K
文摘
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Two phases of mafic volcanism: pre-31 Ma flood basalt, a second phase ca. 29–24 Ma.
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Felsic super eruptions occurred at ca. 31 Ma and spanned ca. 250 kyr.
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Lake Tana is a 60–80 km diameter caldera filled with +180 m of flat lying sediment.
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Timing of volcanism and Eocene–Oligocene environmental perturbations are unrelated.