The boundary of Larsen Basin on Tabarin Peninsula, Antarctica

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The Larsen Basin is the depositional area including all the upper Mesozoic-lower Cenozoic sedimentary rocks on the continental shelf of the northern Antarctic Peninsula. The western boundary between the basin fill and the rocks forming its technical basement, is not exposed, and was defined on the b...

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Autores principales:	del Valle, R.A., Scasso, R.A.
Formato:	JOUR
Materias:	Early Cretaceous Larsen Basin Northern Antarctic Peninsula Provenance Stratigraphy Tabarin Peninsula basin fill Cretaceous depositional environment provenance regression sequence stratigraphy Antarctic Peninsula Antarctica Arctic and Antarctic West Antarctica World
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00044822_v59_n1_p38_delValle
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00044822_v59_n1_p38_delValle
record_format	dspace
spelling	todo:paper_00044822_v59_n1_p38_delValle2023-10-03T13:57:53Z The boundary of Larsen Basin on Tabarin Peninsula, Antarctica del Valle, R.A. Scasso, R.A. Early Cretaceous Larsen Basin Northern Antarctic Peninsula Provenance Stratigraphy Tabarin Peninsula basin fill Cretaceous depositional environment provenance regression sequence stratigraphy Antarctic Peninsula Antarctica Arctic and Antarctic West Antarctica World The Larsen Basin is the depositional area including all the upper Mesozoic-lower Cenozoic sedimentary rocks on the continental shelf of the northern Antarctic Peninsula. The western boundary between the basin fill and the rocks forming its technical basement, is not exposed, and was defined on the basis of aeromagnetic data. On petrological grounds, the Mesozoic marine sedimentary rocks exposed on western Tabarin Peninsula, at the north-eastern extremity of the Antarctic Peninsula, are assigned to the lower part of the Aptian-Eocene regressive megasequence that forms the basin filling. These rocks are faulted against sediments of the Antarctic Peninsula magmatic arc, suggesting that post- depositional tectonic movements probably occurred. This compressional deformation is assigned to mid-Cretaceous times, when the Coniacian partial basin inversion was accompanied by westward-verging deformation at the western basin margin. Although the original extent of the basin cannot be discerned from these data, the lithostratigraphical evidence and geographical position of the basin sediments, together with terrestrial magnetic data, confirm that the Larsen Basin extends onto the southern part of Tabarin Peninsula, and indicate that the western limit of the basin is located northward of the previously proposed limit. © 2004 Asociación Geológica Argentina. Fil:del Valle, R.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Scasso, R.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v59_n1_p38_delValle
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Early Cretaceous Larsen Basin Northern Antarctic Peninsula Provenance Stratigraphy Tabarin Peninsula basin fill Cretaceous depositional environment provenance regression sequence stratigraphy Antarctic Peninsula Antarctica Arctic and Antarctic West Antarctica World
spellingShingle	Early Cretaceous Larsen Basin Northern Antarctic Peninsula Provenance Stratigraphy Tabarin Peninsula basin fill Cretaceous depositional environment provenance regression sequence stratigraphy Antarctic Peninsula Antarctica Arctic and Antarctic West Antarctica World del Valle, R.A. Scasso, R.A. The boundary of Larsen Basin on Tabarin Peninsula, Antarctica
topic_facet	Early Cretaceous Larsen Basin Northern Antarctic Peninsula Provenance Stratigraphy Tabarin Peninsula basin fill Cretaceous depositional environment provenance regression sequence stratigraphy Antarctic Peninsula Antarctica Arctic and Antarctic West Antarctica World
description	The Larsen Basin is the depositional area including all the upper Mesozoic-lower Cenozoic sedimentary rocks on the continental shelf of the northern Antarctic Peninsula. The western boundary between the basin fill and the rocks forming its technical basement, is not exposed, and was defined on the basis of aeromagnetic data. On petrological grounds, the Mesozoic marine sedimentary rocks exposed on western Tabarin Peninsula, at the north-eastern extremity of the Antarctic Peninsula, are assigned to the lower part of the Aptian-Eocene regressive megasequence that forms the basin filling. These rocks are faulted against sediments of the Antarctic Peninsula magmatic arc, suggesting that post- depositional tectonic movements probably occurred. This compressional deformation is assigned to mid-Cretaceous times, when the Coniacian partial basin inversion was accompanied by westward-verging deformation at the western basin margin. Although the original extent of the basin cannot be discerned from these data, the lithostratigraphical evidence and geographical position of the basin sediments, together with terrestrial magnetic data, confirm that the Larsen Basin extends onto the southern part of Tabarin Peninsula, and indicate that the western limit of the basin is located northward of the previously proposed limit. © 2004 Asociación Geológica Argentina.
format	JOUR
author	del Valle, R.A. Scasso, R.A.
author_facet	del Valle, R.A. Scasso, R.A.
author_sort	del Valle, R.A.
title	The boundary of Larsen Basin on Tabarin Peninsula, Antarctica
title_short	The boundary of Larsen Basin on Tabarin Peninsula, Antarctica
title_full	The boundary of Larsen Basin on Tabarin Peninsula, Antarctica
title_fullStr	The boundary of Larsen Basin on Tabarin Peninsula, Antarctica
title_full_unstemmed	The boundary of Larsen Basin on Tabarin Peninsula, Antarctica
title_sort	boundary of larsen basin on tabarin peninsula, antarctica
url	http://hdl.handle.net/20.500.12110/paper_00044822_v59_n1_p38_delValle
work_keys_str_mv	AT delvallera theboundaryoflarsenbasinontabarinpeninsulaantarctica AT scassora theboundaryoflarsenbasinontabarinpeninsulaantarctica AT delvallera boundaryoflarsenbasinontabarinpeninsulaantarctica AT scassora boundaryoflarsenbasinontabarinpeninsulaantarctica
_version_	1807315119756017664

The boundary of Larsen Basin on Tabarin Peninsula, Antarctica

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