Evidence for underplating in the genesis of the Variscan synorogenic Beja Layered Gabbroic Sequence (Portugal) and related mesocratic rocks
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- 作者：Ana Patrí ; cia Jesusa ; b ; ana.jesus@gutech.edu.om" class="auth_mail" title="E-mail the corresponding author ; Antó ; nio Mateusb ; c ; José ; Manuel Munhá ; b ; c ; Colombo C.G. Tassinarid ; Telmo M. Bento dos Santosb ; e ; Mathieu Benoitf
- 关键词：Beja gabbro ; Synorogenic layered intrusion ; Underplating ; SW Iberian Variscan suture ; Deep crustal hot zone
- 刊名：Tectonophysics
- 出版年：2016
- 出版时间：30 June 2016
- 年：2016
- 卷：683
- 期：Complete
- 页码：148-171
- 全文大小：5593 K
文摘
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The 350 Ma Beja Layered Gabbroic Sequence (LGS) is a Variscan synorogenic intrusion.
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Tectono-magmatic evolution of LGS magma chamber reflects the Variscan stress field.
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LGS polybaric magma replenishments (9–4 kbar) document underplating at the Moho.
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Mesocratic suites associated to LGS derived from an equivalent mantle source.
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Underplating gave rise to a deep crustal hot zone producing the mesocratic suites.