Results 21 to 30 of about 725 (154)
Geochemistry, Geophysics, Geosystems, Volume 23, Issue 8, August 2022., 2022 Abstract Most pyroclastic deposits of Popocatépetl volcano were emplaced at high temperatures and have similar mafic to more evolved compositions, suggesting a long‐lived, interconnected magma environment. We performed a magnetic and microscopic study on different eruptive sequences <14 ky in age and found that temperature and field dependence of ...
K. Dudzisz +2 more
wiley +1 more source
First Full Vector Archeomagnetic Data From Northern Mexico
Geochemistry, Geophysics, Geosystems, Volume 22, Issue 10, October 2021., 2021 Abstract Several regional secular variation curves of the geomagnetic field have been proposed for Mexico over the last millennia. Despite a fairly large number of archeomagnetic data, these curves remain imprecise because of an uneven quality and geographic distribution, with a lack of data in Northern Mexico.
B. Tchibinda Madingou +5 more
wiley +1 more source
Revista Mexicana de Ciencias Geológicas, 2021 La disponibilidad de edades radiométricas para el Campo Volcánico Michoacán-Guanajuato permite obtener un registro detallado de las variaciones del campo magnético de la Tierra durante los últimos 5 Ma. En el presente trabajo, analizamos 112 direcciones
Ulises Díaz-Ortega +6 more
doaj +1 more source
Journal of Geophysical Research: Solid Earth, Volume 126, Issue 9, September 2021., 2021 Abstract We report an archeomagnetic study from the Early Iron Age archeological site of Cerro de San Vicente (Salamanca, Spain). The studied materials were sampled from one roundhouse and its central fireplace, a surrounding burnt floor, and slags with a twofold objective.
N. García‐Redondo +9 more
wiley +1 more source
Tectonics, Volume 40, Issue 7, July 2021., 2021 Abstract GPS data suggest that the NW South America corner forms a semi‐rigid block drifting NE‐ward along the regional dextral strike‐slip faults that bound an oceanic terrane accreted in Late Cretaceous times to W Ecuador and Colombia. However, the relevance of both strike‐slip versus thrust tectonics during Cenozoic times and their relation with ...
Gaia Siravo +3 more
wiley +1 more source
Paleomagnetismo: exemplos da História da Ciência nos manuais de Geologia do 12.º ano
, 2015 Palaeomagnetism has been fundamental for the development and foundation of Plate Tectonics Theory (PT). Within this context, Palaeomagnetism is a compulsive content of 12* grade Geology (Amador & Silva, 2004). The curriculum orientation for Geology has been enhancing the usage of strategies based on examples and episodes of the History of Science (HS).
Correia, Gina Pereira +1 more
openaire +2 more sources
Paleomagnetismo e Tectónica de Placas - Desenvolvimento e Avaliação de Modelos para o Ensino [PDF]
, 2014 O presente trabalho tem como ponto de partida a importância do Paleomagnetismo no ensino e aprendizagem da Tectónica de Placas no ensino secundário. Teve, como plataforma de base, um estudo qualitativo em manuais escolares de Biologia e Geologia do 10.ºano de escolaridade e de Geologia do 12.º ano, leia-se, o universo dos manuais disponíveis no mercado
Correia, Gina Maria Pereira
openaire +2 more sources
Geofísica Internacional, 2010 Los cráteres de impacto se caracterizan por sistemas hidrotermales activos; particularmente en aquellos formados en ambientes marinos, en los cuales los procesos convectivos incluyen fluidos hidrotermales y agua de mar.
J. E. Escobar-Sanchez +1 more
doaj +1 more source
Geofísica Internacional, 2006 Se analizan los efectos de la variación del ritmo de enfriamiento en la adquisición de la magnetización termoremanente (TRM, por sus siglas en inglés) en un conjunto de rocas volcánicas.
Juan Morales +2 more
doaj +1 more source
Paleomagnetismo e Idades K-Ar do Complexo Intrusivo Itaqui, Estado de São Paulo
Revista Brasileira De Geociências, 1998 Marcia Ernesto
exaly +2 more sources