Results 41 to 50 of about 188 (129)

Zoneamiento composicional y mineralógico en los productos eruptivos del centro volcánico de los Humeros, Puebla, México

Geofísica Internacional, 1985
El centro volcánico de Los Humeros, localizado 180 km al este de la ciudad de México, es uno de varios centros volcánicos silícicos localizados por "detrás" del frente definido por los volcanes andesíticos activos grandes erupciones plinianas y dos ...
H. Ferriz
doaj   +1 more source

Scaling of internal joint distance in the elbow of small‐ to medium‐sized mammals: Implications for range of motion analyses

Journal of Anatomy, Volume 248, Issue 6, Page 950-971, June 2026.
We investigated the internal joint distances (IJDs) of the humero‐ulnar and humero‐radial joint, within a sample of 15 small‐ to medium‐sized mammals and report isometric results. We also found that joint poses had no effect on IJDs and that IJDs scale isometrically within small species.
Adrian Scheidt, Alina C. E. Renk, John A. Nyakatura   +2 more
wiley   +1 more source

High Temperature Friction and Strength of Felsite and Basalt: Implications for Supercritical EGS at Krafla, Iceland

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract One promising potential site for extracting supercritical geothermal fluids is the Krafla volcano, Iceland, into which a borehole was drilled very close to a shallow rhyolite magma chamber at about 2 km depth. Besides the technical challenge to drill in this setting, the extreme temperature conditions of T > 900°C close to the magma body may ...
E. Rybacki, V. Schuster, J. Starke, S. Incel   +3 more
wiley   +1 more source

New remains of Titanochelon richardi (Testudines, Testudinidae) from the Upper Miocene of the Vallès‐Penedès Basin: taxonomic and phylogenetic implications

Papers in Palaeontology, Volume 11, Issue 6, November/December 2025.
Abstract The alpha‐taxonomy of continental giant tortoises (Testudinidae, Titanochelon) from the European Neogene is far from settled, which has implications for inferring their phylogenetic relationships. The diagnosis of the type species (Titanochelon bolivari) is dubious because it considered Titanochelon richardi as a junior subjective synonym ...
Kelly Ann Vega‐Pagán, Arnau Bolet, Andrea Villa, Massimo Delfino, Josep Fortuny, David M. Alba, Àngel H. Luján   +6 more
wiley   +1 more source

Mosaic morphology in Podocnemididae revealed by a new turtle from the Middle Miocene La Venta Biome, Colombia

Papers in Palaeontology, Volume 11, Issue 6, November/December 2025.
Abstract A new genus and species of podocnemidid turtle, Shakiremys colombiana, is described here from the Middle Miocene La Venta Biome, located in south‐central Colombia. The new taxon is represented by two specimens: one consisting of a complete skull and articulated shell, and the other of an articulated shell only.
Edwin‐Alberto Cadena, David E. Leal‐Amaya, Andrés Vanegas‐Vanegas, Rubén D. Vanegas‐Vanegas, Lino J. E. Guevara‐Serrano   +4 more
wiley   +1 more source

Hydrodynamic model of Los Humeros geothermal field, Mexico, based on geochemical, mineralogical and isotopic data [PDF]

Geofísica Internacional, 2002
The local basement of Los Humeros geothermal field is a Paleozoic metamorphic complex, a Mesozoic folded sedimentary sequence formed by chlorite-muscovite shales, lower Tertiary syenitic and granodioritic intrusions and Pliocene andesites.
B. I. Romero, R. M. Barragán, G. Izquierdo, E. Portugal   +3 more
doaj  

Geoquímica isotópica de 13C, D y 18O de fluidos del sistema geotérmico Los Humeros, Puebla (México)

Geofísica Internacional, 1994
Se presentan resultados isotópicos de o13CCH4 y o13Co2 del fluido geotérmico de Los Humeros, Puebla, y valores de 1)180 y oD correspondientes al agua de manantiales aledaños y pozos productores del sistema.
E. Portugal, M. P. Verma, R. M. Barragán, A. Mañón   +3 more
doaj   +1 more source

Sassolite Precipitation at the Restless Campi Flegrei Volcano in Italy Points to Hydrothermal Flashing by Deep Boron‐Rich Brines

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 10, October 2025.
Abstract Studying the behavior of dormant volcanoes is a major challenge in volcanology. Here, we conducted a 10‐year survey of hydrothermal mineralization at Campi Flegrei, an active volcano near Naples in Italy, which last erupted in 1538. Our survey revealed a significant output of boric acid at the hydrothermal sulfate discharge area of Pisciarelli,
M. Piochi, A. Mormone, G. Solomita, R. Moretti   +3 more
wiley   +1 more source

Distribución y condiciones de formación de los minerales de arcilla en un campo geotérmico -- el caso de Los Humeros, Estado de Puebla

Revista Mexicana de Ciencias Geológicas, 2019
El estudio mineralógico por difracción de rayos X de diversas muestras de pozo del campo geotérmico de los Humeros ha mostrado una distribución zonal de los minerales del grupo de la arcilla… Para continuar, descargue el artículo completo en PDF.
Eduardo González-Partida, Rosa María Barragán-Reyes, Rosario Vázquez-Escobedo   +2 more
doaj  

Gravimetric and morpho-structural analyses in the superhot geothermal system Los Humeros: an example from central Mexico

Geothermal Energy
The influence of deep and regional geological structures is becoming increasingly important in superhot geothermal systems due to their proximity to the transition between brittleness and ductility.
Natalia Cornejo-Triviño, Domenico Liotta, Luigi Piccardi, Andrea Brogi, Michal Kruszewski, M.A Perez-Flores, Jonathan Carrillo, Philippe Calcagno, Ingo Sass, Eva Schill   +9 more
doaj   +1 more source