Anisotropy of magnetic susceptibility and paleomagnetism in thedevonian lolén formation, sierras australes of buenos aires province
The Lolén Formation, of devonian age, outcrops in the Sierras Australes area of the Buenos Aires Province. The geological evolution of this region is still a subject of debate. In this work, anisotropy of magnetic susceptibility and paleomagnetism results are presented. The samples were taken from t...
Guardado en:
| Publicado: |
2017
|
|---|---|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v74_n3_p326_Tomezzoli http://hdl.handle.net/20.500.12110/paper_00044822_v74_n3_p326_Tomezzoli |
| Aporte de: |
| id |
paper:paper_00044822_v74_n3_p326_Tomezzoli |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_00044822_v74_n3_p326_Tomezzoli2023-06-08T14:26:59Z Anisotropy of magnetic susceptibility and paleomagnetism in thedevonian lolén formation, sierras australes of buenos aires province Gondwana Paleozoic Permian postectonic magnetization Ventana group Devonian folding Gondwana magnetic anisotropy magnetization paleomagnetism Paleozoic Permian Argentina Buenos Aires [Argentina] Sierras Australes Nica The Lolén Formation, of devonian age, outcrops in the Sierras Australes area of the Buenos Aires Province. The geological evolution of this region is still a subject of debate. In this work, anisotropy of magnetic susceptibility and paleomagnetism results are presented. The samples were taken from the Las Acacias farm. The geographic position is 38° 04,2' South Latitude and 61° 52,7' West Longitude. In the Lolén Formation was possible to isolate a preliminary postectonic magnetization with Permian age. This shows the opening of the magnetic system after its folding. The petrofabric is oblate by tectonic origin and indicates a SO-NE maximum compression direction related to the cleavage planes that cut the previous folding structures. The fact that these rocks are carriers of a postectonic magnetization, as a tectonic magnetic fabric, would indicate the overlap of different coaxial deformation events that could have started during Medium to Late Devonian. The deformation events could be a consequence of the collision of Chilenia and Patagonia against Gondwana and by postcolisional compressive deformation accommodation with latitudinal movements up to the Permian. © 2017, Asociacion Geologica Argentina. All rights reserved. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v74_n3_p326_Tomezzoli http://hdl.handle.net/20.500.12110/paper_00044822_v74_n3_p326_Tomezzoli |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Gondwana Paleozoic Permian postectonic magnetization Ventana group Devonian folding Gondwana magnetic anisotropy magnetization paleomagnetism Paleozoic Permian Argentina Buenos Aires [Argentina] Sierras Australes Nica |
| spellingShingle |
Gondwana Paleozoic Permian postectonic magnetization Ventana group Devonian folding Gondwana magnetic anisotropy magnetization paleomagnetism Paleozoic Permian Argentina Buenos Aires [Argentina] Sierras Australes Nica Anisotropy of magnetic susceptibility and paleomagnetism in thedevonian lolén formation, sierras australes of buenos aires province |
| topic_facet |
Gondwana Paleozoic Permian postectonic magnetization Ventana group Devonian folding Gondwana magnetic anisotropy magnetization paleomagnetism Paleozoic Permian Argentina Buenos Aires [Argentina] Sierras Australes Nica |
| description |
The Lolén Formation, of devonian age, outcrops in the Sierras Australes area of the Buenos Aires Province. The geological evolution of this region is still a subject of debate. In this work, anisotropy of magnetic susceptibility and paleomagnetism results are presented. The samples were taken from the Las Acacias farm. The geographic position is 38° 04,2' South Latitude and 61° 52,7' West Longitude. In the Lolén Formation was possible to isolate a preliminary postectonic magnetization with Permian age. This shows the opening of the magnetic system after its folding. The petrofabric is oblate by tectonic origin and indicates a SO-NE maximum compression direction related to the cleavage planes that cut the previous folding structures. The fact that these rocks are carriers of a postectonic magnetization, as a tectonic magnetic fabric, would indicate the overlap of different coaxial deformation events that could have started during Medium to Late Devonian. The deformation events could be a consequence of the collision of Chilenia and Patagonia against Gondwana and by postcolisional compressive deformation accommodation with latitudinal movements up to the Permian. © 2017, Asociacion Geologica Argentina. All rights reserved. |
| title |
Anisotropy of magnetic susceptibility and paleomagnetism in thedevonian lolén formation, sierras australes of buenos aires province |
| title_short |
Anisotropy of magnetic susceptibility and paleomagnetism in thedevonian lolén formation, sierras australes of buenos aires province |
| title_full |
Anisotropy of magnetic susceptibility and paleomagnetism in thedevonian lolén formation, sierras australes of buenos aires province |
| title_fullStr |
Anisotropy of magnetic susceptibility and paleomagnetism in thedevonian lolén formation, sierras australes of buenos aires province |
| title_full_unstemmed |
Anisotropy of magnetic susceptibility and paleomagnetism in thedevonian lolén formation, sierras australes of buenos aires province |
| title_sort |
anisotropy of magnetic susceptibility and paleomagnetism in thedevonian lolén formation, sierras australes of buenos aires province |
| publishDate |
2017 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v74_n3_p326_Tomezzoli http://hdl.handle.net/20.500.12110/paper_00044822_v74_n3_p326_Tomezzoli |
| _version_ |
1768542765667319808 |