207032
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funding vehicle for: Eruptive chronology and tectonic context of the late Pleistocene Tres Vírgenes volcanic complex, Baja California Sur (México)

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RDF description of Eruptive chronology and tectonic context of the late Pleistocene Tres Vírgenes volcanic complex, Baja California Sur (México) - http://orbis.uaslp.mx/vivo/individual/scopus5678
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date: 2026-08-28T02:11:27
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Journal of Volcanology and Geothermal Research
publication venue for: Eruptive chronology and tectonic context of the late Pleistocene Tres Vírgenes volcanic complex, Baja California Sur (México)
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Eruptive chronology and tectonic context of the late Pleistocene Tres Vírgenes volcanic complex, Baja California Sur (México)
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doi: 10.1016/j.jvolgeores.2018.06.012
abstract: Based on a detailed geological map and stratigraphy aided by new 230Th/238U and 206P/238U age determinations we established the eruptive chronology of the Tres Vírgenes Volcanic Complex (TVVC). The complex consists of three northeast-southwest aligned stratovolcanoes, which from older to younger are El Viejo, El Azufre, and La Virgen and associated cinder cones and domes. The alignment was fed from fissures that mark the southern trace of the left-lateral Cimarron Fault. The TVVC was built upon the basement rocks of the Peninsular Ranges Batholith (~99 Ma), the Santa Lucia Formation (21.6 Ma), the Esperanza basalt (7.6 Ma), and the 1.1 Ma ignimbrite of El Aguajito caldera. The TVVC began its formation at ca. 300 ka mainly with dacitic lava flows and domes that formed El Viejo volcano (4.2 km3). At around 173 ka, activity migrated to the southwest to build El Azufre volcano (3.8 km3) with the emission of dacitic lavas and several phases of dome construction and destruction with the generation of pyroclastic density currents. El Azufre%27s activity ended ~128 ka with the extrusion of the summit dome. At about 112 ka, volcanism migrated 4.2 km to the southwest to begin the construction of La Virgen Volcano through the emission of andesitic and dacitic lavas that built the largest cone of the complex until ~22 ka (31.2 km3). This volcano was built upon several stages of cone construction with the emission of lava flows and peripheral dacitic domes and cinder cones. Between 128 and 112 ka six cinder cones vented along the Cimarron Fault between the La Virgen and El Azufre volcanoes. By assuming a constant emission of magma the total volume of the TVVC (39 km3) was erupted at an average rate of 0.13 km3/kyr. Of this volume, effusive eruptions dominated the evolution of the complex (89%25) of which 62%25 are dacites and 38%25 andesites. The TVVC rocks have compositions of 50–67 wt%25 in silica, and low-medium K (0.5–2.5 wt%25 K2O). Trace element signatures of the TVVC rock…
date time value: article date 5679
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has publication venue: Journal of Volcanology and Geothermal Research
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abstract: Based on a detailed geological map and stratigraphy aided by new 230Th/238U and 206P/238U age determinations we established the eruptive chronology of the Tres Vírgenes Volcanic Complex (TVVC). The complex consists of three northeast-southwest aligned stratovolcanoes, which from older to younger are El Viejo, El Azufre, and La Virgen and associated cinder cones and domes. The alignment was fed from fissures that mark the southern trace of the left-lateral Cimarron Fault. The TVVC was built upon the basement rocks of the Peninsular Ranges Batholith (~99 Ma), the Santa Lucia Formation (21.6 Ma), the Esperanza basalt (7.6 Ma), and the 1.1 Ma ignimbrite of El Aguajito caldera. The TVVC began its formation at ca. 300 ka mainly with dacitic lava flows and domes that formed El Viejo volcano (4.2 km3). At around 173 ka, activity migrated to the southwest to build El Azufre volcano (3.8 km3) with the emission of dacitic lavas and several phases of dome construction and destruction with the generation of pyroclastic density currents. El Azufre's activity ended ~128 ka with the extrusion of the summit dome. At about 112 ka, volcanism migrated 4.2 km to the southwest to begin the construction of La Virgen Volcano through the emission of andesitic and dacitic lavas that built the largest cone of the complex until ~22 ka (31.2 km3). This volcano was built upon several stages of cone construction with the emission of lava flows and peripheral dacitic domes and cinder cones. Between 128 and 112 ka six cinder cones vented along the Cimarron Fault between the La Virgen and El Azufre volcanoes. By assuming a constant emission of magma the total volume of the TVVC (39 km3) was erupted at an average rate of 0.13 km3/kyr. Of this volume, effusive eruptions dominated the evolution of the complex (89%25) of which 62%25 are dacites and 38%25 andesites. The TVVC rocks have compositions of 50–67 wt%25 in silica, and low-medium K (0.5–2.5 wt%25 K2O). Trace element signatures of the TVVC rocks …
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freetext keyword: Baja California; Cimarron fault; Geochronology; Geothermal field; Stratigraphy; Tres Vírgenes volcanic complex Binary alloys; Domes; Faulting; Geochronology; Geothermal fields; Lanthanum alloys; Niobium alloys; Silica; Stratigraphy; Titanium alloys; Trace elements; Volcanoes; Ytterbium alloys; Aeromagnetic data; Baja california; Constant-emissions; Effusive eruptions; Element signatures; Peninsular Ranges Batholith; Pyroclastic density currents; Volcanic complex; Lanthanum; fault; geochronology; lava flow; magma chamber; Pleistocene; stratigraphy; stratovolcano; tectonics; tephra; volcanic eruption; Baja California Sur; Mexico [North America]; Tres Virgenes Geothermal Field; Esperanza
related by: authorship_35937
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