“.... Proximal volcanic activity is indicated by a series of dikes that cut through pyroclastic beds and lead...”
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“... of the lagoon an extinct Pliocene volcano, Volcán Prieto, marks an equally abrupt boundary delineated by basalt...”
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“... modes between sands sourced by volcanic rocks (Trans-Mexican Volcanic Belt (TMVB) sands) and sedimentary...”
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“... and geochemistry of the volcanic rocks obtained during the drilling of the Wells in the geothermal field, the rocks...”
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“... and conglomerates, and the volcanics are basalts and andesites. Due to the lack of fossils, the age has been...”
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