Detachment faulting and late Paleozoic epithermal Ag-basemetal mineralization in the Spanish central system

Doblas Lavigne, Miguel Manuel Delas; Oyarzun Muñoz, Roberto; Lunar Hernández, María Del Rosario; Mayor, Nicolás; Martínez, Jesus

Detachment faulting and late Paleozoic epithermal Ag-basemetal mineralization in the Spanish central system

Download

800.pdf (3.86 MB)

Official URL

https://pubs.geoscienceworld.org/geology

Publication date

1988

Authors

Doblas Lavigne, Miguel Manuel Delas

Oyarzun Muñoz, Roberto

Lunar Hernández, María Del Rosario

Mayor, Nicolás

Martínez, Jesus

Publisher

The Geological Society of America

Citations

Exportar

URI

https://hdl.handle.net/20.500.14352/88164

Citation

Miguel Doblas , Roberto Oyarzun , Rosario Lunar , Nicolás Mayor , Jesús Martínez; Fallamiento por desprendimiento y mineralización epitermal de metales base Ag del Paleozoico tardío en el sistema central español. Geología 1988;; 16 (9): 800–803. doi: https://doi.org/10.1130/0091-7613(1988)016<0800:DFALPE>2.3.CO;2

Abstract

Hydrothermal activity during late Hercynian time resulted in epithermal silver-base-metal (Pb-Zn-Cu) vein formation in the eastern part of the Spanish central system. During the Hercynian orogeny, the central Iberian crust was thickened by compressional tectonics, heated, weakened, and subsequently overthickened by massive late Hercynian granitic intrusions. Subsequently, the central Iberian crustal welt underwent extensional collapse through lithosphere-scale, low-angle detachment faulting. The detachment systems evolved through tectonic denudation, isostatic rebound, and upward arching to define an extensional province much like the U.S. Basin and Range. Andesitic volcanism and hydrothermal activity occurred during extension, inducing epithermal-type hydrothermal convecting systems that leached, transported, and precipitated silver and base metals along fractures crosscutting the Hiendelaencina Metamorphic core complex.