inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

A Miocene Continental Basin associated with the back thrusting of the Eastern Sierras Pampeanas in the Santa Maria Valley, Northwestern Argentina

Auteurs :
MON, R.
GUTIÉRREZ, A.A.
SABAT, F.
IAFFA, D.

Description :
This study addresses the structures of the Miocene sequences in the Santa María Valley, on which there has previously been a lack of information. The Santa María Valley was formed by 2 superposed tectonic events. The first event, during a phase of the Miocene (ca. 13-5 Ma), was an extension and volcanism during which a sedimentary succession of non-marine beds accumulated, lying directly on the crystalline Proterozoic basement. A compressional event followed, causing folding and thrusting. This contraction resulted in antiforms of sedimentary beds and the crystalline basement, and large basement-cored antiforms were formed. The Miocene sedimentation took place over an irregular floor with offsets delimited by normal faults. The most significant step strikes NW-SE and x approximately coincides with the fault trending along the Amaicha Valle. - (NF)


Type de document :
Article de périodique

Source :
Italian Journal of Geosciences (Testo stampato), issn : 2038-1719, 2012, vol. 131, n°. 1, p. 123-135, nombre de pages : 13, Références bibliographiques : 57 ref.

Date :
2012

Editeur :
Pays édition : Italie, Roma, Società Geologica Italiana

Langue :
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)