Argon behaviour in an inverted Barrovian sequence, Sikkim Himalaya: The consequences of temperature and timescale on 40Ar/39Ar mica geochronology
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- 作者：Catherine M. Mottrama ; b ; c.m.mottram@googlemail.com" class="auth_mail" title="E-mail the corresponding author ; Clare J. Warrena ; Alison M. Haltona ; Simon P. Kelleya ; Nigel B.W. Harrisa
- 关键词：40Ar/39Ar ; Inverted metamorphism ; Himalaya ; Cooling ; Ductile thrusting
- 刊名：Lithos
- 出版年：2015
- 出版时间：1 December 2015
- 年：2015
- 卷：238
- 期：Complete
- 页码：37-51
- 全文大小：3239 K
文摘
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Detailed 40Ar/39Ar study of Main Central Thrust zone, Sikkim Himalaya.
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> 600 °C temperatures for timescales > 5 Ma are required to yield cooling ages consistent with diffusive loss.
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Diffusion modelling results suggest the MCT rocks cooled at a rate of ~ 50–80 °C Ma− 1.
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Simultaneous exhumation on MCT and STD in Sikkim Himalaya at ~ 13 Ma.