Results 101 to 110 of about 3,601 (116)
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Journal of Volcanology and Geothermal Research, 2014
Abstract The Cuicuiltic Member (CM) at Los Humeros Caldera, eastern Mexican Volcanic Belt is a Holocene (6.4 ka B.P.) succession of alternated fallout deposits of contrasting composition (trachydacite pumice and basaltic andesite scoria). The CM covers approximately 250 km2 on its proximal facies and its thickness ranges from 1.5 m to 8.0 m.
P. Dávila-Harris, G. Carrasco‐Núñez
semanticscholar +2 more sources
Abstract The Cuicuiltic Member (CM) at Los Humeros Caldera, eastern Mexican Volcanic Belt is a Holocene (6.4 ka B.P.) succession of alternated fallout deposits of contrasting composition (trachydacite pumice and basaltic andesite scoria). The CM covers approximately 250 km2 on its proximal facies and its thickness ranges from 1.5 m to 8.0 m.
P. Dávila-Harris, G. Carrasco‐Núñez
semanticscholar +2 more sources
Magma genesis and chamber processes at Los Humeros caldera, Mexico—Nd and Sr isotope data
Nature, 1983The Mexican volcanic belt (MVB), a roughly east–west structure, consists of many late Tertiary and Quaternary cindercones, domes, calderas and stratovolcanoes1,2. Los Humeros caldera (approximately 19°40′ N latitude, 97°25′ W longitude) lies on the northeastern part of the MVB where the belt overlaps with another major volcanic province, the Eastern ...
S. Verma
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Journal of South American Earth Sciences, 2018
Abstract Los Humeros caldera in eastern Mexico has been formed since about 164 ka, with important effusive activity during the upper Holocene, which covered more than 100 km2 with lava. Two lava flows were 14C dated at 2692-1950 cal BCE and 1117-930 cal BCE, but the detailed succession of eruptions is yet unknown even though the interest for volcanic
Erick Juárez-Arriaga +3 more
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Abstract Los Humeros caldera in eastern Mexico has been formed since about 164 ka, with important effusive activity during the upper Holocene, which covered more than 100 km2 with lava. Two lava flows were 14C dated at 2692-1950 cal BCE and 1117-930 cal BCE, but the detailed succession of eruptions is yet unknown even though the interest for volcanic
Erick Juárez-Arriaga +3 more
semanticscholar +2 more sources
International Geology Review, 2011
We present results of our simulation study of the effects of the depth (top of the magma chamber at 5–10 km) and volume (1000–1400 km3) of the primary heat source beneath the Los Humeros caldera. The thermal gradient in the vicinity of the magma chamber calculated from the temperature excess (difference between the simulated and the initial ...
S. Verma, E. Gómez-Arias, J. Andaverde
semanticscholar +2 more sources
We present results of our simulation study of the effects of the depth (top of the magma chamber at 5–10 km) and volume (1000–1400 km3) of the primary heat source beneath the Los Humeros caldera. The thermal gradient in the vicinity of the magma chamber calculated from the temperature excess (difference between the simulated and the initial ...
S. Verma, E. Gómez-Arias, J. Andaverde
semanticscholar +2 more sources
Gravity study of Los Humeros caldera complex, Mexico : structure and associated geothermal system
Journal of Volcanology and Geothermal Research, 1992Abstract Los Humeros caldera lies in the eastern portion of the Trans-Mexican Volcanic Belt. A geothermal system is associated with this silicic caldera. The volcano-sedimentary products of the caldera itself rest on a basement of calcareous rocks and granitic intrusives.
J. Campos-Enríquez +1 more
semanticscholar +2 more sources
Journal of Volcanology and Geothermal Research
R. Torres-Orozco +3 more
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R. Torres-Orozco +3 more
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Geothermics, 1990
A simulation of the temperature field underlying Los Humeros caldera is obtained through numerical solution of the energy-conservation equation for a conductive heat flow process. The up-date information on geological, geochemical, geophysical and geochronological studies is used to estimate the parameters of the internal structure of the caldera.
M. Verma, S. Verma, H. Sanvicente
semanticscholar +2 more sources
A simulation of the temperature field underlying Los Humeros caldera is obtained through numerical solution of the energy-conservation equation for a conductive heat flow process. The up-date information on geological, geochemical, geophysical and geochronological studies is used to estimate the parameters of the internal structure of the caldera.
M. Verma, S. Verma, H. Sanvicente
semanticscholar +2 more sources
Thermal modeling in active poly-phased calderas: case study of Los Humeros, Mexico
, 2021The Los Humeros Volcanic Complex (LHVC) is an active Quaternary caldera system in the Trans Mexican Volcanic Belt, characterized by two major caldera-forming events, Los Humeros (164 000 years ago) and Los Potreros (69 000 years ago).
P. Deb +5 more
semanticscholar +1 more source
Geological Society of America Bulletin, 2012
Los Humeros is the largest caldera volcano in the Mexican volcanic belt. Its second largest caldera-forming eruption, the ca. 0.1 Ma Zaragoza eruption, is recorded by two Plinian pumice-fall layers and a zoned intra-Plinian ignimbrite. Diverse pumice types within the ignimbrite provide insights about the way that different magmas within a single ...
G. Carrasco‐Núñez +4 more
semanticscholar +2 more sources
Los Humeros is the largest caldera volcano in the Mexican volcanic belt. Its second largest caldera-forming eruption, the ca. 0.1 Ma Zaragoza eruption, is recorded by two Plinian pumice-fall layers and a zoned intra-Plinian ignimbrite. Diverse pumice types within the ignimbrite provide insights about the way that different magmas within a single ...
G. Carrasco‐Núñez +4 more
semanticscholar +2 more sources
Journal of Volcanology and Geothermal Research, 2005
Abstract We explored applications (including limitations) of Gauss's theorem to the study of silicic calderas. First it enables us to determine the mass deficiency from calderas. Mass deficiency itself has also other potential applications. It enables to make qualitative comparisons between calderas. We can use the mass deficiency to test, in a quick
J.O. Campos-Enríquez +4 more
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Abstract We explored applications (including limitations) of Gauss's theorem to the study of silicic calderas. First it enables us to determine the mass deficiency from calderas. Mass deficiency itself has also other potential applications. It enables to make qualitative comparisons between calderas. We can use the mass deficiency to test, in a quick
J.O. Campos-Enríquez +4 more
openaire +1 more source