Geology, petrology and geochronology of the Lago Grande layered complex: Evidence for a PGE-mineralized magmatic suite in the Carajás Mineral Province, Brazil
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- 作者：Antonio Sales Teixeiraa ; Cesar Fonseca Ferreira Filhoa ; Maria Emilia Schutesky Della Giustinaa ; maria_emilia@unb.br" class="auth_mail" title="E-mail the corresponding author ; Sylvia Maria Araú ; joa ; Heloisa Helena Azevedo Barbosa da Silvab
- 关键词：Carajá ; s ; PGE ; Layered intrusion ; Geochronology ; Lithogeochemistry
- 刊名：Journal of South American Earth Sciences
- 出版年：2015
- 出版时间：December 2015
- 年：2015
- 卷：64
- 期：part_P1
- 页码：116-138
- 全文大小：6481 K
文摘
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The Lago Grande Complex is a PGE-mineralized layered intrusion.
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PGE mineralizations occur in chromitites and associated with base metal sulfides.
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U–Pb zircon crystallization age of the layered intrusion is 2722 ± 53 Ma.
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Metamorphic alteration is heterogeneous and characterized by an extensive hydration.
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2.55 Ga zircon ages suggest the influence of the regional IOCG hydrothermal event.