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Showing 1 to 2 of 2 for “"Ash-flow tuff"”.
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Stratigraphy, igneous petrology and evolution of the Sinclair Group in southern South West Africa
… predominantly of basic and felsic lava flows and various volcaniclastic beds including ash-flow tuff deposits. Basic lavas constitute the bulk of the succession and are typically highly porphyritic. A preliminary 'member' subdivision of the Barby sequence is suggested, based mainly on …
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Paleomagnetic and AMS results from Oligocene ash-flow tuffs of the eastern San Juan Mountains : implications for the evolution of the western margin of the San Luis Basin, northern Rio Grande Rift
… beginning ca. 26 Ma in the Cordillera. Oligocene ash-flow tuffs exposed in the eastern San Juan Mountains and along the western margin of the SLB provide an excellent opportunity to study the kinematic history of the northern Rio Grande rift using paleomagnetism. Outflow deposits of ash-flow tuffs …