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00925njm 22002777a 4500 dc Doblas Lavigne, Miguel Manuel Delas author Oyarzun Muñoz, Roberto author Lunar Hernández, María Del Rosario author Mayor, Nicolás author Martínez, Jesus author 1988 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. 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 0091-7613 10.1130/0091-7613(1988)016<0800:DFALPE>2.3.CO;2 https://hdl.handle.net/20.500.14352/88164 1943-2682 https://pubs.geoscienceworld.org/geology Detachment faulting and late Paleozoic epithermal Ag-basemetal mineralization in the Spanish central system