Magnetostratigraphy of the Miocene Las Arcas Formation, Santa María Valley, northwestern Argentina
The first magnetostratigraphic study of the Las Arcas Formation (Late Miocene) was carried out in Las Totoritas creek (26o12'S; 65o47'W, NW Argentina), a key place in between of two geological provinces: Northwestern Pampean Ranges and Eastern Cordillera, in northwestern Argentina. This wa...
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2015
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| 005 | 20230518204327.0 | ||
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| 024 | 7 | |2 scopus |a 2-s2.0-84937029577 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Spagnuolo, C.M. | |
| 245 | 1 | 0 | |a Magnetostratigraphy of the Miocene Las Arcas Formation, Santa María Valley, northwestern Argentina |
| 260 | |b Elsevier Ltd |c 2015 | ||
| 270 | 1 | 0 | |m Spagnuolo, C.M.; CONICET, IESGLO, Instituto de Sedimentología, Facultad de Ciencias Naturales y Fundación Miguel Lillo, Universidad Nacional de Tucumán, Miguel Lillo 205-251, Argentina |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a The first magnetostratigraphic study of the Las Arcas Formation (Late Miocene) was carried out in Las Totoritas creek (26o12'S; 65o47'W, NW Argentina), a key place in between of two geological provinces: Northwestern Pampean Ranges and Eastern Cordillera, in northwestern Argentina. This was accompanied by isotopic dating (9.01±0.12Ma, 40Ar-39Ar in amphibole) of the unit, obtained from a 3.4m thick tuff intercalated at ~45m above the base. The Las Arcas Formation is 810m thick at the sampling locality and it is mainly composed of tabular reddish conglomerates, sandstones and siltstones in both coarsening- and thickening-upward arrangements. The exposed section was sampled at 48 sites, 26 of which are interpreted as carrying primary magnetization. The new magnetostratigraphic column was correlated with the Geomagnetic Polarity Time Scale (GPTS), and suggests that deposition of the Las Arcas Formation strata started at around 9.1Ma and ended around 6.8Ma. The paleomagnetic pole obtained for this unit (Dec=8.7° Inc=-43.9° dp=14.9dm 9.3) indicates that this area underwent non-significant rotation (11.0°±13.6°) since the Late Miocene. © 2015 Elsevier Ltd. |l eng | |
| 536 | |a Detalles de la financiación: Universidad Nacional de Tucumán | ||
| 536 | |a Detalles de la financiación: SuperIapd 2000 ( Torsvik et al., 2000 ) and Paleomagnetism Data Analysis v.4.2 ( Enkin, 1994 ) software packages were used to analyze the paleomagnetics data. All laboratory analyses were conducted at the Laboratorio de Paleomagnetismo Daniel A. Valencio of the Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires (IGEBA), Departamento de Ciencias Geológicas de la Universidad de Buenos Aires (Argentina). This study was supported by Proyecto y Programas de Investigación: 26/G443 – 2 Secretaría de Ciencia y Técnica de la Universidad Nacional de Tucumán . CONICET (Argentine Research Council) is acknowledged for post-doctoral fellowships to C.M. Spagnuolo. Guillermo Ré is fully thanked for the help with the laboratory preparation of the samples and specimens. Constructive reviews by two anonymous reviewers and Regional Editor (Dr. Victor Ramos) significantly improved the final version. Appendix A | ||
| 593 | |a CONICET, IESGLO, Instituto de Sedimentología, Facultad de Ciencias Naturales y Fundación Miguel Lillo, Universidad Nacional de Tucumán, Miguel Lillo 205-251, San Miguel de Tucumán, T4000JFE, Argentina | ||
| 593 | |a IGEBA, CONICET-Depto. Cs. Geológicas, FCEyN, Univ. Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires, C1428EHA, Argentina | ||
| 690 | 1 | 0 | |a LAS ARCAS FORMATION |
| 690 | 1 | 0 | |a MAGNETOSTRATIGRAPHY |
| 690 | 1 | 0 | |a MIOCENE |
| 690 | 1 | 0 | |a PALEOMAGNETISM |
| 690 | 1 | 0 | |a SEDIMENTATION RATE |
| 690 | 1 | 0 | |a GEOCHRONOLOGY |
| 690 | 1 | 0 | |a MAGNETIZATION |
| 690 | 1 | 0 | |a MAGNETOSTRATIGRAPHY |
| 690 | 1 | 0 | |a MIOCENE |
| 690 | 1 | 0 | |a PALEOMAGNETISM |
| 690 | 1 | 0 | |a SEDIMENTATION RATE |
| 690 | 1 | 0 | |a SIERRAS PAMPEANAS |
| 651 | 4 | |a NORTHWESTERN ARGENTINA | |
| 651 | 4 | |a ARGENTINA | |
| 651 | 4 | |a ARGENTINA | |
| 700 | 1 | |a Georgieff, S.M. | |
| 700 | 1 | |a Rapalini, A.E. | |
| 773 | 0 | |d Elsevier Ltd, 2015 |g v. 63 |h pp. 101-113 |p J. South Am. Earth Sci. |x 08959811 |w (AR-BaUEN)CENRE-1080 |t Journal of South American Earth Sciences | |
| 856 | 4 | 1 | |u https://www.scopus.com/inward/record.uri?eid=2-s2.0-84937029577&doi=10.1016%2fj.jsames.2015.07.004&partnerID=40&md5=edbeeb4749dd6fea695c5055dbf91be9 |y Registro en Scopus |
| 856 | 4 | 0 | |u https://doi.org/10.1016/j.jsames.2015.07.004 |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_08959811_v63_n_p101_Spagnuolo |y Handle |
| 856 | 4 | 0 | |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08959811_v63_n_p101_Spagnuolo |y Registro en la Biblioteca Digital |
| 961 | |a paper_08959811_v63_n_p101_Spagnuolo |b paper |c PE | ||
| 962 | |a info:eu-repo/semantics/article |a info:ar-repo/semantics/artículo |b info:eu-repo/semantics/publishedVersion | ||
| 963 | |a VARI | ||
| 999 | |c 74130 | ||