El Rombohorst mineralizado de Las Herrerias: un caso de «doming» e hidrotermalismo submarino mioceno en el SE ibérico
DOI:
https://doi.org/10.3989/egeol.93491-2334Keywords:
Herrerías, seafloor hydrothermal mineralization, geotectonic settingAbstract
The present contribution offers new data on the Miocene, seafloor, hydrothermal deposit of Herrerías, in relation with its geotectonic setting. This deposit consists of a simple paragenesis of Fe-Mn oxides, base metal sulphides, native silver, barite, siderite, jasper, calcedony and gypsum (scarce); these minerals are forming part of: 1) beds of mineralized exhalites, 2) veins and pipes, 3) Fe-Mn crusts and 4) dissemination zones. The main mineralized outcrops are controlled by three fracturation systems: a) sinistral, wreoch faults NNE-SSW, b) inverse faults WNW-ESE and c) normal faults N-S, N190E and N150E. Basically, its geotectonic setting corresponds to a positive «flower structure», of Upper Miocene age, within which the N-S and N150E faults were the main channels for the emplacement of the ore fluids. This mineralized structure has been formed according to a subvolcanic doming in a shear zone.
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Published
1993-04-30
How to Cite
López Gutiérrez, J., Martínez Frías, J., Lunar, R., & López García, J. A. (1993). El Rombohorst mineralizado de Las Herrerias: un caso de «doming» e hidrotermalismo submarino mioceno en el SE ibérico. Estudios Geológicos, 49(1-2), 13–19. https://doi.org/10.3989/egeol.93491-2334
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