The temporal and spatial distribution of magmatism during lower crustal accretion at an ultraslow-spreading ridge: High-precision U-Pb zircon dating of ODP Holes 735B and 1105A, Atlantis Bank, Southwest Indian Ridge
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- 作者：Matthew Riouxa ; b ; rioux@eri.ucsb.edu" class="auth_mail" title="E-mail the corresponding author ; Michael J. Cheadlec ; Barbara E. Johnc ; Samuel A. Bowringb
- 关键词：Atlantis Bank ; Southwest Indian Ridge ; ultraslow-spreading ; oceanic core complexes ; ODP Hole 735B ; zircon
- 刊名：Earth and Planetary Science Letters
- 出版年：2016
- 出版时间：1 September 2016
- 年：2016
- 卷：449
- 期：Complete
- 页码：395-406
- 全文大小：1436 K
文摘
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New TIMS U–Pb zircon dates constrain the magmatic history of ODP Holes 735B/1105A.
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Hole 735B crust was formed over ≥0.214±0.032 Ma.
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Dated samples become progressively younger with increased depth in the core.
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The age-depth profile indicates each igneous series underplated the prior series.
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Magmatic cooling rates were 103–104 °C/Ma from 900–700 °C.