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Title

Esfuerzos actuales en la región del Arco de Scotia

Other TitlesPresent-day stresses in the Scotia Arc region
AuthorsGalindo-Zaldívar, Jesús; Jabaloy, Antonio; Maldonado, Andrés ; Sanz de Galdeano, Carlos
KeywordsRight dihedra diagrams
Present-day stresses
Scotia Arc
Issue Date1996
PublisherSociedad Geológica de España
CitationGeogaceta 20(4): 817-819 (1996)
AbstractThe study of the stresses in the Scotia Arc, determined by right dihedra diagrams of earthquake focal mechanisms, illustrates the present-day tectonics of the region. The Scotia Arc is a large sinistral fault zone, with NE-SW subhorizontal (o1,where the relative motion between the Antarctic and South America plates is distributed. While the North Scotia Ridge is deformed by sinistral transpressive faults, related to the general stress field, the transpressive sinistral deformations in the Shackleton Fracture Zone are related to a stress field o, of WNW-ESE trend and subhorizontal. In the Bransfield Strait and in the South Scotia Ridge, stresses are extensional, with o1, subvertical and o3, trending NW-SE, and produce respectively in each region, normal and transtensive sinistral faults.
Description3 páginas, 3 figuras.-- Comunicación presentada en el IV Congreso Nacional de Geología, Alcalá de Henares, 1996.
Publisher version (URL)http://www.sociedadgeologica.es/publicaciones/geogaceta/1996_20_4.html
URIhttp://hdl.handle.net/10261/29328
ISSN0213-683X
Appears in Collections:(IACT) Artículos
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