Geology and ore deposits of Baja California, Mexico

Wisser, Edward Hollister

doi:10.2113/gsecongeo.49.1.44

Cited by 6 publications

(2 citation statements)

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“…Mesothermal Au-Ag quartz veins are common along the western margin and within roof pendants of the Peninsular Ranges batholith. The veins form anastomosing stockworks of quartz, carbonate, and chlorite with small, high-grade bonanza Au shoots (Wisser, 1954).…”

Section: Cretaceousmentioning

confidence: 99%

Jurassic to Holocene tectonics, magmatism, and metallogeny of northwestern Mexico

Staude

Barton

2001

Geological Society of America Bulletin

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The present metallic distribution in northwestern Mexico is the culmination of superposed magmatism, tectonism, erosion, and burial over more than 150 m.y. Detailed palinspastic reconstructions of preextensional configurations-the first study of its kind for this region-clarify the interplay among these features on the present distribution and character of mineralized geologic systems. This new synthesis goes beyond previous metallogenic investigations of northwestern Mexico by separating events into specific timing and structural relationships, and by restoring the geology to its preextensional configuration. Metallogenic factors such as enrichment, preservation, and erosion play major roles in the present distributions and for the first time are related to the overall metallogenic framework of northwestern Mexico. The analysis concludes that modern metallogenic patterns are the result of the complex superposition and subsequent redistribution of geologic systems in a way that is related directly to the regional history, rather than simply metallic belts or interpreted angle of a subducting slab. Three main extensional events in the Oligocene-Holocene have been restored, and the palinspastic distributions have been analyzed. Reconstructions reveal the following: (1) Mineralization events, igneous centers, and sedimentary sequences are continuous across the Gulf of California and other areas with large amounts of extension. (2) Middle Tertiary gold-silver mineralization in Baja California may be the western part of the Sierra Madre Oc

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Section: Cretaceousmentioning

confidence: 99%

Jurassic to Holocene tectonics, magmatism, and metallogeny of northwestern Mexico

Staude

Barton

2001

Geological Society of America Bulletin

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“…Again, the period of deformation which accompanied the igneous activity is closely dated between early Late Cretaceous and Late Cretaceous. An outline of the geologic history of the Baja California region is given by Wisser (1954). In 1955, the area described by Woodford and Harriss was visited by Earl Ingerson, David Gottfried, L. R. Stieff, T. W. Stern, and Norman Silberling; L. T. Silver, and Charles E. Weaver, for the purpose of obtaining samples of the intrusive rocks and to collect fossils from the sedimentary rocks as near as possible to the intrusive contact.…”

Section: Age Determinations Batholithic Bocks From Baja California Omentioning

confidence: 99%