Geochemical and Isotopic Signature of a Mesozoic 1000 Km–Long Arcuate Dyke Swarm In NE Brazil

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作者

Antomat Avelino Macêdo Filho¹ , Maria Helena Hollanda¹

1. USP

会议/活动

2nd INTERNATIONAL CONGRESS ON EARTH SCIENCES IN SE ASIA, November 2019 (Nusa Dua - Bali, Indonesia)

海报摘要

In this work we exposed a preliminary geochemical characterization of the Rio Ceará-Mirim dyke swarm (RCM). This is a giant plumbing system in NE Brazil with ca. 1000 km–long emplaced at the Early Cretaceous age (~130 Ma). The dykes are dominated by high–Ti tholeiites (TiO >2%), followed by low–Ti tholeiites (TiO <2%), rare trachyandesites (SiO >57%) and olivine tholeiites. In this poster we present an integrate characterization of whole–rock geochemistry (major, minor and REE) and Sr–Nd–Pb isotopes of the Rio Ceará–Mirim magmatism.

关键词

Continental tholeiites, Dike swarms, EQUAMP, West Gondwana

研究领域

Earth Sciences

参考文献

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基金

1. FAPESP (No. 2017/13130–0)
2. FAPESP (No. 2017/08423–9)
3. FAPESP (No. 2018/24769–5)
4. CAPES (No. 1643026)

补充材料

暂无数据

附加信息

利益冲突

No competing interests were disclosed.

数据可用性声明

The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

知识共享许可协议

Copyright © 2022 Macêdo Filho et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.