Cenozoic phosphatic deposits in North Patagonia, Argentina: Phosphogenesis, sequence-stratigraphy and paleoceanography
Paleoenvironmental analysis of the Cenozoic marine section cropping out near Gaiman (Chubut Province, Argentina) shows that most of the local succession was deposited in a shallow, storm-dominated marine environment, bearing well preserved Ophiomorpha fossil traces. Sequence-stratigraphic interpreta...
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1999
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| LEADER | 26091caa a22016337a 4500 | ||
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| 001 | PAPER-19510 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518205051.0 | ||
| 008 | 190411s1999 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-0033380766 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Scasso, R.A. | |
| 245 | 1 | 0 | |a Cenozoic phosphatic deposits in North Patagonia, Argentina: Phosphogenesis, sequence-stratigraphy and paleoceanography |
| 260 | |c 1999 | ||
| 270 | 1 | 0 | |m Scasso, R.A.; Departamento de Geologia, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pab. II, 1428 Buenos Aires, Argentina; email: rscasso@gl.fcen.uba.ar |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a Paleoenvironmental analysis of the Cenozoic marine section cropping out near Gaiman (Chubut Province, Argentina) shows that most of the local succession was deposited in a shallow, storm-dominated marine environment, bearing well preserved Ophiomorpha fossil traces. Sequence-stratigraphic interpretation records the effect of three sea-level oscillations. Phosphatic strata are related to mostly in situ concretions developed within transgressive-early highstand system tracts (Type 1) and to reworked and winnowed lags associated with transgressive surfaces (Type 2) which display a concentration of phosphatic concretions, ooids, vertebrate bones, teeth and shells. Close association of Callianasid bioturbation (Ophiomorpha) and phosphatic levels suggest a genetic link for both, via improved early-diagenetic water circulation and Fe and P early-diagenetic cycling. Phosphogenesis would have taken place after cold and corrosive water, probably similar to the present Antarctic Intermediate Water (AAIW), flooded the continental shelf and mixed with warmer surficial waters. This mixing could explain the contrasting indications from the marine vertebrate fauna together with the general corrosion and replacement processes that are common in the Gaiman strata. The development of the phosphorites would have occurred at times of global climatic transition and increased oceanic circulation, probably during the Late Oligocene Early Miocene. |l eng | |
| 536 | |a Detalles de la financiación: Universidad de Buenos Aires | ||
| 536 | |a Detalles de la financiación: Secretaría de Ciencia y Técnica, Universidad de Buenos Aires, Ex-299 | ||
| 536 | |a Detalles de la financiación: Financial support for this study was provided by the University of Buenos Aires (UBACYT Ex-299=“Prospección, ambientes de sedimentación y génesis de depósitos fosfáticos en Patagonia”). We acknowledge H. Lippai, P.R. Bosch, A. Fazio and P. Miretsky for chemical analysis and help in the field-work; R. Cúneo, Director of the Museo Paleontológico E. Feruglio (Trelew) for logistic support in the field-work.; and M.B. Aguirre-Urreta, H. Camacho, C. Del Rı́o and G. Parma for crustacean and molluscan determinations. The manuscript was improved by reviews from M. Uliana, J. McArthur, N. Malumián, C. Glenn and H. Camacho. | ||
| 593 | |a Departamento de Geología, Fac. Cie. Exact. Y Nat., Univ. B., Buenos Aires, Argentina | ||
| 651 | 4 | |a ARGENTINA | |
| 651 | 4 | |a ARGENTINA | |
| 690 | 1 | 0 | |a CENOZOIC |
| 690 | 1 | 0 | |a PAL EOCEANOGRAPHY |
| 690 | 1 | 0 | |a PATAGONIA |
| 690 | 1 | 0 | |a PATAGONIENSE |
| 690 | 1 | 0 | |a PHOSPHATES |
| 690 | 1 | 0 | |a PHOSPHOGENESIS |
| 690 | 1 | 0 | |a SEQUENCE-STRATIGRAPHY |
| 690 | 1 | 0 | |a CENOZOIC |
| 690 | 1 | 0 | |a MARINE ENVIRONMENT |
| 690 | 1 | 0 | |a PALEOCEANOGRAPHY |
| 690 | 1 | 0 | |a PHOSPHATE |
| 690 | 1 | 0 | |a SEQUENCE STRATIGRAPHY |
| 700 | 1 | |a Castro, L.N. | |
| 773 | 0 | |d 1999 |g v. 12 |h pp. 471-487 |k n. 5 |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-s2.0-0033380766&doi=10.1016%2fS0895-9811%2899%2900035-8&partnerID=40&md5=ed83e9e8b162bd6b0cb58942109c72f5 |y Registro en Scopus |
| 856 | 4 | 0 | |u https://doi.org/10.1016/S0895-9811(99)00035-8 |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_08959811_v12_n5_p471_Scasso |y Handle |
| 856 | 4 | 0 | |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08959811_v12_n5_p471_Scasso |y Registro en la Biblioteca Digital |
| 961 | |a paper_08959811_v12_n5_p471_Scasso |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 | ||