El Rombohorst mineralizado de Las Herrerias: un caso de «doming» e hidrotermalismo submarino mioceno en el SE ibérico

J. López Gutiérrez; J. Martínez Frías; R. Lunar; J. A. López García

doi:10.3989/egeol.93491-2334

El Rombohorst mineralizado de Las Herrerias: un caso de «doming» e hidrotermalismo submarino mioceno en el SE ibérico

Authors

J. López Gutiérrez Instituto Tecnológico y Geominero de España
J. Martínez Frías Instituto Andaluz de Geología Mediterránea (CSIC-U. Granada)
R. Lunar Dpto. de Cristalografía y Mineralogía, Facultad de CC Geológicas, U. Complutense
J. A. López García Dpto. de Cristalografía y Mineralogía, Facultad de CC Geológicas, U. Complutense

DOI:

https://doi.org/10.3989/egeol.93491-2334

Keywords:

Herrerías, seafloor hydrothermal mineralization, geotectonic setting

Abstract

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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Issue

Vol. 49 No. 1-2 (1993)

Section

Articles

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