Structure, stratigraphy and hydrothermal alteration at the Gaviao orebodies, Aljustrel: reconstruction of a dismembered ore-forming system at the Iberian Pyrite Belt and implications for exploration

被引:0
|
作者
Relvas, Jorge M. R. S. [1 ]
Barriga, Fernando J. A. S. [1 ]
Carvalho, Joao R. S. [1 ]
Pinto, Alvaro M. M. [1 ]
Matos, Joao X.
Rosa, Carlos J. P.
Pereira, Zelia
机构
[1] Univ Lisbon, Dept Geol, CREMINER LARSyS, P-1749016 Lisbon, Portugal
关键词
Iberian pyrite belt; Gaviao deposit; volcanic facies; palynomorphs; VHMS exploration; PORTUGAL; MINERALIZATION; DEPOSITS;
D O I
暂无
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Structural complexity and poor stratigraphic control on many local successions of the Iberian pyrite belt prevent from being fully understood promising exploration targets that have been abandoned after unsuccessful drilling. Structural analysis, palynomorph dating, physical volcanology, and ore-related hydrothermal alteration zoning of the footwall succession that hosts the two Gaviao orebodies enabled reconstruction of their pre-tectonic ore-forming setting, accounting for a number of reliable exploration vectors. In particular, the sodium-rich ore-related distal alteration envelopes can be detected by means well within reach during exploration, and should constitute a suitable tool to trace paths to massive sulphide mineralization in the Iberian pyrite belt.
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页码:770 / 772
页数:3
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