Results 51 to 60 of about 106 (72)
Some of the next articles are maybe not open access.
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
exaly +2 more sources
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
exaly +2 more sources
Seismic models of the Los Humeros caldera (Mexico) using the GEMEX project data
2020<p>In the framework of the GEMEX project (cooperation between Europe and Mexico for geothermal development), a dense network of 45 stations was deployed in 2017-2018 in the Los Humeros caldera, Mexico.</p><p>Thanks to this network an intense local seismic activity has been recorded in the geothermal ...
Marco Calò +8 more
openaire +1 more source
Alkali and alkaline earth element geochemistry of Los Humeros Caldera, Puebla, Mexico
Journal of Volcanology and Geothermal Research, 1984Abstract Results of the measurements of alkali (K, Rb and Cs) and alkaline earth (Ba and Sr) elements on seven pre-caldera and twenty post-caldera samples of Los Humeros volcanics (Pliocene to Recent) are described. These data are interpreted in terms of the known solid-liquid partition coefficients.
exaly +2 more sources
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
Harald Bohnel +2 more
exaly +2 more sources
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
Harald Bohnel +2 more
exaly +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.O. Campos-Enriquez +1 more
exaly +2 more sources
International Geology Review, 2009
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 ...
Surendra P. Verma +2 more
openaire +1 more source
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 ...
Surendra P. Verma +2 more
openaire +1 more source
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.
Surendra P Verma
exaly +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.
Surendra P Verma
exaly +2 more sources
IOP Conference Series: Earth and Environmental Science, 2008 Based on information of enthalpies of the fluids of wells from the geothermal reservoir of Los Humeros, Puebla, Mexico, we determined the thermodynamic conditions of the reservoir comparing the values of enthalpies of the fluids of discharge of the wells with the values published in the literature for different thermodynamic state of fluids.
José Martínez Reyes +4 more
exaly +2 more sources
Bulletin of the Geological Society of America, 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 ...
Gerardo Carrasco-Núñez +2 more
exaly +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 ...
Gerardo Carrasco-Núñez +2 more
exaly +2 more sources
SEG Technical Program Expanded Abstracts 1983, 1983
Los Humeros caldera is a Quaternary volcanic structure located on the eastern portion of the Mexican volcanic belt. Geothermal exploration, including well drilling, is presently carried out; geophysical surveys over the 200 km’ structure include aeromagnetometry, gravimetry, tellurics, self-potential, resistivity soundings (Schlumberger).
openaire +1 more source
Los Humeros caldera is a Quaternary volcanic structure located on the eastern portion of the Mexican volcanic belt. Geothermal exploration, including well drilling, is presently carried out; geophysical surveys over the 200 km’ structure include aeromagnetometry, gravimetry, tellurics, self-potential, resistivity soundings (Schlumberger).
openaire +1 more source