Tectonic, sea-level and climatic controls on carboniferous sedimentation in the western basins of Argentina

LIMARINO, C.O.; TRIPALDI, A.; MARENSSI, S.A.; FAUQUÉ, L.

Belem, Brasil

Congreso; 3rd Latin American Congress of Sedimentology; 2003

International Association of Sedimentologists

<!-- /* Font Definitions */ @font-face {font-family:MSTT31c41f; panose-1:0 0 0 0 0 0 0 0 0 0; mso-font-charset:0; mso-generic-font-family:auto; mso-font-format:other; mso-font-pitch:auto; mso-font-signature:3 0 0 0 1 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:595.3pt 841.9pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:35.4pt; mso-footer-margin:35.4pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> The geologic record of Carboniferous rocks in the southwestern margin of Gondwana shows a complex history of interaction between tectonism, sea level changes and climatic conditions. The imprint of each of them is preserved in the sedimentary record of many basins and its indentification and study not only alow reconstructing the evolution of the depositional areas, but also establishing key surfaves and stratigraphic levels for intracontinental correlations. Two different basin types must be consideredc within the Carboniferous tectonic framework of the southwestern margin of Gondwana. Westernmost Chilenean basins show a complex history frequently masked by metamorphic and deformational processes. On the contrary, western Argentina basins exhibit thick sedimentary sequences and a more complete stratigraphic record without metamorphisms or intensive deformation. In this paper, a stratigraphic analysis of two Carboniferous basins located in western Argentina along the latitude 30 south (Paganzo and Rio Blanco) is presented.