A multidisciplinary study of the Lower Cretaceous marine to continental transition in the northern Austral-Magallanes basin and its geodynamic significance
Sedimentologic studies together with preliminary anisotropy of magnetic susceptibility (AMS) analysis were carried out in a very particular and intriguing Lower Cretaceous depocenter in the northern Austral-Magallanes basin, in order to elucidate its geodynamic setting. Aptian-Albian regressive sequ...
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2018
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| LEADER | 23382caa a22014897a 4500 | ||
|---|---|---|---|
| 001 | PAPER-25035 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518205700.0 | ||
| 008 | 190410s2018 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-85048721730 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Aramendía, I. | |
| 245 | 1 | 2 | |a A multidisciplinary study of the Lower Cretaceous marine to continental transition in the northern Austral-Magallanes basin and its geodynamic significance |
| 260 | |b Elsevier Ltd |c 2018 | ||
| 270 | 1 | 0 | |m Aramendía, I.; Instituto Patagónico para el Estudio de Ecosistemas Continentales, CCT-CONICET-CENPAT, Boulevard Almirante Brown 2915, Argentina; email: aramendia@cenpat-conicet.gob.ar |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a Sedimentologic studies together with preliminary anisotropy of magnetic susceptibility (AMS) analysis were carried out in a very particular and intriguing Lower Cretaceous depocenter in the northern Austral-Magallanes basin, in order to elucidate its geodynamic setting. Aptian-Albian regressive sequences from the coastal Río Belgrano Formation and the fluvial conglomerates of Río Tarde Formation prograded into the regionally distributed marine sequence from Río Mayer Formation. This “early” progradation of continental environments is a characteristic of the northern sector of the basin, since marine conditions prevailed up to Campanian times towards the south. The tectonic context indicates a sudden passage from a marine to a deltaic and continental river system occurred during the uplift of the Northern Patagonian Andes and extra-Andean Patagonia. Our sedimentologic observations suggest a Barremian to Aptian regression, probably driven by the generalized uplift of surrounding blocks. AMS data indicates that a tectonic overprint of the original magnetic fabric was likely the product of E-W shortening applied soon after deposition, representing one of the earliest evidences of Andean deformation. Although the sedimentary setting was broadly placed in the retro-arc, our data helps to place the specific tectonic environment of the depocenter that is still little known and open to debate. © 2018 Elsevier Ltd |l eng | |
| 536 | |a Detalles de la financiación: Agencia Córdoba Ciencia, PICT-2013-1291 | ||
| 536 | |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas, PIP 2014-2016 GI | ||
| 536 | |a Detalles de la financiación: This work has been carried out with the financial support of grants projects Agencia PICT-2013-1291 and CONICET PIP 2014-2016 GI directed by M.C. Ghiglione. The authors are grateful to Estancia La Península owner for granting access to the study zone. Thanks to the reviewers Augusto Rapalini and Sebastián Richiano for their comments along the manuscript, they really helps to the final version. Appendix A | ||
| 593 | |a Instituto Patagónico para el Estudio de Ecosistemas Continentales, CCT-CONICET-CENPAT, Boulevard Almirante Brown 2915, Puerto Madryn, Chubut U9120A CD, Argentina | ||
| 593 | |a Instituto de Estudios Andinos “Don Pablo Groeber” CONICET, Departamento de Ciencias Geológicas, FCEN, Universidad de Buenos Aires, Argentina | ||
| 593 | |a Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires CONICET, Departamento de Ciencias Geológicas, FCEN, Universidad de Buenos Aires, Argentina | ||
| 593 | |a Instituto Patagónico de Geología y Paleontología, CCT-CONICET-CENPAT, Boulevard Almirante Brown 2915, Puerto Madryn, Chubut U9120A CD, Argentina | ||
| 690 | 1 | 0 | |a ANISOTROPY OF MAGNETIC SUSCEPTIBILITY (AMS) |
| 690 | 1 | 0 | |a AUSTRAL-MAGALLANES BASIN |
| 690 | 1 | 0 | |a CRETACEOUS |
| 690 | 1 | 0 | |a PALEOMAGNETISM |
| 690 | 1 | 0 | |a PATAGONIAN ANDES |
| 690 | 1 | 0 | |a CRETACEOUS |
| 690 | 1 | 0 | |a DELTAIC SEDIMENTATION |
| 690 | 1 | 0 | |a DEPOCENTER |
| 690 | 1 | 0 | |a DEPOSITIONAL ENVIRONMENT |
| 690 | 1 | 0 | |a GEODYNAMICS |
| 690 | 1 | 0 | |a MAGNETIC ANISOTROPY |
| 690 | 1 | 0 | |a PALEOMAGNETISM |
| 690 | 1 | 0 | |a AUSTRAL BASIN |
| 700 | 1 | |a Ramos, M.E. | |
| 700 | 1 | |a Geuna, S. | |
| 700 | 1 | |a Cuitiño, J.I. | |
| 700 | 1 | |a Ghiglione, M.C. | |
| 773 | 0 | |d Elsevier Ltd, 2018 |g v. 86 |h pp. 54-69 |p J. South Am. Earth Sci. |x 08959811 |w (AR-BaUEN)CENRE-1080 |t Journal of South American Earth Sciences | |
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