Deutsch
 
Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
Zur Ablage hinzufügen
  Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben
Zeitschriftenartikel

A crustal model along 39°S from a seismic refraction profile- ISSA 2000

Urheber*innen

Araneda,  M.
External Organizations;

/persons/resource/asch

Asch,  Günter
2.4 Seismology, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Bataille,  K.
External Organizations;

/persons/resource/mirjam

Bohm,  Mirjam
2.4 Seismology, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Bruhn,  C.
External Organizations;

Giese,  P.
External Organizations;

/persons/resource/slueth

Lüth,  Stefan
Deutsches GeoForschungsZentrum;

Quezada,  J.
External Organizations;

Rietbrock,  A.
External Organizations;

Wigger,  P.
External Organizations;

, 

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (frei zugänglich)

Revista geológica de Chile.pdf
(beliebiger Volltext), 2MB

Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Araneda, M., Asch, G., Bataille, K., Bohm, M., Bruhn, C., Giese, P., Lüth, S., Quezada, J., Rietbrock, A., Wigger, P. (2003): A crustal model along 39°S from a seismic refraction profile- ISSA 2000. - Revista Geológica de Chile, 30, 1, 83-101.
https://doi.org/10.4067/S0716-02082003000100006


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_231603
Zusammenfassung
The results of a seismic refraction profile across the Southern Andes at 39�S from the Chilean Pacific coast to the Argentinean Neuqu�n Basin are presented here. A 2-D crustal velocity model was derived from traveltime forward modelling of the correlated phases on shot-sections from shot-points in the Pacific Ocean and in the Chilean Main Cordillera. The crustal velocity model is characterized by lower average velocities in the fore-arc than in the arc. A typical receiver function studies. The oceanic Moho was observed down to ca. 45 km depth under the continental fore-arc. Using additional structural and seismic data, the velocity model was extrapolated to the west and to the east, and this model was converted into a rough density model. The gravity, computed from this density model, is consistent with the free-air and Bouguer gravity. A crustal thickness of ca. 40 km is inferred for the magmatic arc. Gradually decreasing average velocities of the continental crust from east to west are proposed to be due to the influence of the intrusion of the North Patagonian batholith in the east and of decreasing age of the accretionary wedge together with underplating of subducted sediments at the base of the continental crust in the west.