| The Gondwana Orogeny in northern North Patagonian Massif:Evidences from the Caita Có granite,La Se?a and Pangaré mylonites,Argentina |
| |
| 引用本文： | Daniel A.Gregori,Bernhardt Saini-Eidukat,Leonardo Benedini,Leonardo Strazzere,Mercedes Barros,José Kostadinoff.The Gondwana Orogeny in northern North Patagonian Massif:Evidences from the Caita Có granite,La Se?a and Pangaré mylonites,Argentina[J].地学前缘(英文版),2016,7(4):621-638. |
| |
| 作者姓名： | Daniel A.Gregori Bernhardt Saini-Eidukat Leonardo Benedini Leonardo Strazzere Mercedes Barros José Kostadinoff |
| |
| 作者单位： | Cátedra de Geología Argentina, Departamento de Geología, Universidad Nacional del Sur and INGEOSUR;Department of Geosciences, North Dakota State University;Cátedra de Campos Gravitacionales, Departamento de Física, Universidad Nacional del Sur |
| |
| 摘 要： | Structural analyses in the northern part of the North Patagonia Massif,in the foliated Caita Co granite and in La Sena and Pangare mylonites,indicate that the pluton was intruded as a sheet-like body into an opening pull-apart structure during the Gondwana Orogeny.Geochronological studies in the massif indicate a first,lower to middle Permian stage of regional deformation,related to movements during indentation tectonics,with emplacement of foliated granites in the western and central areas of the North Patagonian Massif.Between the upper Permian and lower Triassic,evidence indicates emplacement of undeformed granitic bodies in the central part of the North Patagonian Massif.A second pulse of deformation between the middle and upper Triassic is related to the emplacement of the Caita Co granite,the development of mylonitic belts,and the opening of the Los Menucos Basin.During this pulse of deformation,compression direction was from the eastern quadrant.
|
| 关 键 词： | granite zircon magmatic Triassic quartz Permian intrusive dating metamorphic strike |
http://www.sciencedirect.com/science/article/pii/S167498711500064X |
| |
| Abstract: | Structural analyses in the northern part of the North Patagonia Massif,in the foliated Caita Co granite and in La Sena and Pangare mylonites,indicate that the pluton was intruded as a sheet-like body into an opening pull-apart structure during the Gondwana Orogeny.Geochronological studies in the massif indicate a first,lower to middle Permian stage of regional deformation,related to movements during indentation tectonics,with emplacement of foliated granites in the western and central areas of the North Patagonian Massif.Between the upper Permian and lower Triassic,evidence indicates emplacement of undeformed granitic bodies in the central part of the North Patagonian Massif.A second pulse of deformation between the middle and upper Triassic is related to the emplacement of the Caita Co granite,the development of mylonitic belts,and the opening of the Los Menucos Basin.During this pulse of deformation,compression direction was from the eastern quadrant. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地学前缘(英文版)》浏览原始摘要信息 |
| 点击此处可从《地学前缘(英文版)》下载免费的PDF全文 |
|
