Results 11 to 20 of about 43,101 (170)

The Viscosity of Carbonate‐Silicate Transitional Melts at Earth's Upper Mantle Pressures and Temperatures, Determined by the In Situ Falling‐Sphere Technique

open access: yesGeophysical Monograph Series, Page 223-236., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Vincenzo Stagno   +5 more
wiley  

+2 more sources

The 1980, 1997 and 1998 Azores earthquakes and its seismotectonic implications [PDF]

open access: yes, 2007
We have studied the focal mechanisms of the 1980, 1997 and 1998 earthquakes in the Azores region from body-wave inversion of digital GDSN (Global Digital Seismograph Network) and broadband data. For the 1980 and 1998 shocks, we have obtained strike– slip
Bezzeghoud, M.   +4 more
core   +1 more source

Taller de geofísica : geomagnetisme [PDF]

open access: yes, 2007
El magnetisme i en particular el camp magnètic de la Terra s'ensenya als alumnes des de la primària fins al batxillerat en diferents moments i amb un aprofundiment progressiu.
Blanch, E., Curto, J. J., Vallès, M.
core   +2 more sources

S wave velocity structure below central Mexico using high-resolution surface wave tomography [PDF]

open access: yes, 2010
Shear wave velocity of the crust below central Mexico is estimated using surface wave dispersion measurements from regional earthquakes recorded on a dense, 500 km long linear seismic network.
Clayton, R. W.   +6 more
core   +1 more source

SEISMO-ELECTROMAGNETIC PHENOMENA IN TECTONICALLY ACTIVE REGIONS [PDF]

open access: yes, 2010
This work presents a research plan that aims to monitor seismo-electromagnetic signals in seismic active regions. Two effects will be considered: electromagnetic field emissions and radio broadcastings.
Bezzeghoud, M.   +9 more
core  

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

open access: yesGeological Journal, EarlyView.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito   +8 more
wiley   +1 more source

The 2007 Azores earthquakes: A case of triggering? [PDF]

open access: yes, 2009
On 5 April (Mw=6.3) and 7 April 2007 (Mw=6.1 ) two earthquakes occur at the Formigas Islets (Azores Islands), both with same epicenter and felt (I=V/VI MSK) in S. Miguel Island.
Bezzghoud, M   +3 more
core  

The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces

open access: yesArchaeometry, EarlyView.
ABSTRACT This paper presents the first archaeomagnetic dating at Tiwanaku (Andean Altiplano). We compared the geomagnetic field values recorded by a metallurgical furnace against an updated SHAWQ2k‐SH global model and a regional intensity curve, both of which include, for the first time, high‐quality intensity data from the Southern Hemisphere. Results
Judit del Río   +6 more
wiley   +1 more source

A preliminary thermal model of the mexican seismovolcanic belt as a result of subduction

open access: yesGeofísica Internacional, 1979
Se desarrolla un modelo término de la faja volcánica mexicana. Los datos geofísicos y los datos geológicos se toman en cuenta en el desarrollo de este modelo (generación de calor, flujo de calor, volcanismo, patrón de falla y parámetros geométricos de la
E. A. Lubimova, RM. Prol
doaj   +1 more source

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