Geology of the Ramírez Nunatak, Jason Peninsula, Antarctic Peninsula
The 118 m thick volcanic sequence exposed at the Ramírez Nunatak, western Jason Peninsula (65°57′S, 60°33′W), Antarctic Peninsula, is composed of a lower section where ash fall tuffs and volcanic sandstones are exposed, and an upper section dominated by rhyolithic ignimbrites. The volcaniclastic sed...
| Autores principales: | , , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00044822_v61_n3_p383_delValle |
| Aporte de: |
| id |
todo:paper_00044822_v61_n3_p383_delValle |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_00044822_v61_n3_p383_delValle2023-10-03T13:58:13Z Geology of the Ramírez Nunatak, Jason Peninsula, Antarctic Peninsula del Valle, R.A. Morelli, J. Azcuy, C.L. Carrizo, H.A. Antarctica Geochemistry Mid-Jurassic Paleobotany Volcanism continental breakup Gondwana ignimbrite Jurassic large igneous province paleobotany rhyolite sandstone tuff volcanic ash volcaniclastic deposit volcanism Antarctic Peninsula Antarctica Patagonia South America West Antarctica Acer The 118 m thick volcanic sequence exposed at the Ramírez Nunatak, western Jason Peninsula (65°57′S, 60°33′W), Antarctic Peninsula, is composed of a lower section where ash fall tuffs and volcanic sandstones are exposed, and an upper section dominated by rhyolithic ignimbrites. The volcaniclastic sediments of the lower section show imprints of lives assigned to Hausmannia de-ferrariisi Feruglio, which indicates a Mid-Jurassic age. The rocks from Ramírez Nunatak are correlated with Maple Formation of the same age, which is typically exposed at the surroundings of Cape Disappointment, located about 60 km northward from Jason Peninsula. These rocks form part of a siliceous large igneous province developed in Patagonia and Antarctic Peninsula in relation to the Gondwana break-up. © 2006 Asociación Geológica Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v61_n3_p383_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 |
Antarctica Geochemistry Mid-Jurassic Paleobotany Volcanism continental breakup Gondwana ignimbrite Jurassic large igneous province paleobotany rhyolite sandstone tuff volcanic ash volcaniclastic deposit volcanism Antarctic Peninsula Antarctica Patagonia South America West Antarctica Acer |
| spellingShingle |
Antarctica Geochemistry Mid-Jurassic Paleobotany Volcanism continental breakup Gondwana ignimbrite Jurassic large igneous province paleobotany rhyolite sandstone tuff volcanic ash volcaniclastic deposit volcanism Antarctic Peninsula Antarctica Patagonia South America West Antarctica Acer del Valle, R.A. Morelli, J. Azcuy, C.L. Carrizo, H.A. Geology of the Ramírez Nunatak, Jason Peninsula, Antarctic Peninsula |
| topic_facet |
Antarctica Geochemistry Mid-Jurassic Paleobotany Volcanism continental breakup Gondwana ignimbrite Jurassic large igneous province paleobotany rhyolite sandstone tuff volcanic ash volcaniclastic deposit volcanism Antarctic Peninsula Antarctica Patagonia South America West Antarctica Acer |
| description |
The 118 m thick volcanic sequence exposed at the Ramírez Nunatak, western Jason Peninsula (65°57′S, 60°33′W), Antarctic Peninsula, is composed of a lower section where ash fall tuffs and volcanic sandstones are exposed, and an upper section dominated by rhyolithic ignimbrites. The volcaniclastic sediments of the lower section show imprints of lives assigned to Hausmannia de-ferrariisi Feruglio, which indicates a Mid-Jurassic age. The rocks from Ramírez Nunatak are correlated with Maple Formation of the same age, which is typically exposed at the surroundings of Cape Disappointment, located about 60 km northward from Jason Peninsula. These rocks form part of a siliceous large igneous province developed in Patagonia and Antarctic Peninsula in relation to the Gondwana break-up. © 2006 Asociación Geológica Argentina. |
| format |
JOUR |
| author |
del Valle, R.A. Morelli, J. Azcuy, C.L. Carrizo, H.A. |
| author_facet |
del Valle, R.A. Morelli, J. Azcuy, C.L. Carrizo, H.A. |
| author_sort |
del Valle, R.A. |
| title |
Geology of the Ramírez Nunatak, Jason Peninsula, Antarctic Peninsula |
| title_short |
Geology of the Ramírez Nunatak, Jason Peninsula, Antarctic Peninsula |
| title_full |
Geology of the Ramírez Nunatak, Jason Peninsula, Antarctic Peninsula |
| title_fullStr |
Geology of the Ramírez Nunatak, Jason Peninsula, Antarctic Peninsula |
| title_full_unstemmed |
Geology of the Ramírez Nunatak, Jason Peninsula, Antarctic Peninsula |
| title_sort |
geology of the ramírez nunatak, jason peninsula, antarctic peninsula |
| url |
http://hdl.handle.net/20.500.12110/paper_00044822_v61_n3_p383_delValle |
| work_keys_str_mv |
AT delvallera geologyoftheramireznunatakjasonpeninsulaantarcticpeninsula AT morellij geologyoftheramireznunatakjasonpeninsulaantarcticpeninsula AT azcuycl geologyoftheramireznunatakjasonpeninsulaantarcticpeninsula AT carrizoha geologyoftheramireznunatakjasonpeninsulaantarcticpeninsula |
| _version_ |
1807323632307798016 |