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Resumen del producto
Canet, C., R.M., Prol-Ledesma, P.R., Dando, V., Vázquez-Figueroa, E., Shumilin, E., Birosta, A., Sánchez González, C.J., Robinson, A., Camprubi & E., Tauler
(2010).
Discovery of massive sea floor gas seepage along the Wagner Fault, northern Gulf of California.
Sedimentary Geology.
228(3-4): 292-303.
DOI: 10.1016/jsedgeo.2010.05.004.
Discovery of massive sea floor gas seepage along the Wagner Fault, northern Gulf of California
Carles Canet, Rosa María Prol-Ledesma, Paul R. Dando, Viridiana Vázquez-Figueroa, Evgueni Shumilin, Elisabet Birosta, Alberto Sánchez González, Carlos Jorge Robinson, Antoni Camprubi y Esperança Tauler
Large-scale gas seepage and fluid ejection features are described from the edges of the active pull-apart Wagner and Consag basins (northern Gulf of California, Mexico), at water depths between 65 and 150 m. Gas vents, pockmarks, possible mud volcanoes, pyrite- and barite-rich sediments, slabs of lithified shell debris, and chemosynthetic fauna were found. Gas venting occurs mainly through N-S synsedimentary small-scale faults and fault-propagation folds that are believed to derive from the Wagner Fault. The presumed mud volcanoes are sub-rounded, domed bathymetric features, several hundreds of metres across, underlain by gas-charged sediments and surrounded by gas vents. Upward gas migration throughout the thick sedimentary sequence produces the fluid expulsion features on the sea floor.
Palabras clave: Bubble seep; hydroacoustic flare; rifting; mud volcano; barite; chemosynthetic
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