Artículo
Abstract:
La Flecha Formation (Upper Cambrian) in Precordillera Central is composed of microbiolitic buildups, with a shallowing upward tendency. This paper includes the study of mega, meso and microstructure of thrombolites and stromatolites and the microfacial analysis of the muddy sequence. The following microbiolitic facies were recognized: F1: stratiform and domal stroms, with low synoptic relief, F2: stratiform thrombolites, F3: stratiform-domal thrombolites with low synoptic relief, F4: inverted cone-shaped thrombolites and F5: domal thrombolites. The associated muddy microfacies are represented by: MF6: mudstone with microbial lamination and fenestral fabric, MF7: mudstone with grumous microestructure, MF8: bioturbed mudstone and MF9: floatstone, related to storms. The depositional model of this sequence was interpreted as a carbonatic platform with a complex of non-emergent microbialitic mounds and ponds with restricted circulation.
Registro:
| Documento: | Artículo |
| Título: | Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province |
| Autor: | Armella, C.; Cabaleri, N.; Valencio, S. |
| Filiación: | Consejo Nac. de Investigacions C., Museo Argentino de Cie. Naturales, B. Rivadavia. Av. Angel Gallardo 470, 1405 Buenos Aires, Argentina Depto. de Ciencias Geológicas, Fac. de Ciencias Exactas Y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina Consejo Nac. de Invest. Cie. y Tec., Inst. de Geocronologia Y Geol. I., Cd. Univ., 1428 Buenos Aires, Argentina |
| Palabras clave: | Cambrian; carbonate platform; facies distribution; palaeoenvironment; stromatolite; thrombolite; Brazil, San Juan |
| Año: | 1996 |
| Volumen: | 51 |
| Número: | 2 |
| Página de inicio: | 165 |
| Página de fin: | 176 |
| Título revista: | Revista de la Asociacion Geologica Argentina |
| Título revista abreviado: | Rev. Asoc. Geol. Argent. |
| ISSN: | 00044822 |
| PDF: | https://bibliotecadigital.exactas.uba.ar/download/paper/paper_00044822_v51_n2_p165_Armella.pdf |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v51_n2_p165_Armella |
Referencias:
- Embry, A.F., Klovan, E.J., Absolute waters depth limit Late Devonian paleoecological zones (1972) Geologisches Rundschau, 61 (2), pp. 672-686. , Stuttgart
- Flores, M.A., El Bolsón de Las Salinas en la Prov. de San Luis (1969) Actas 4° Jornadas Geológicas Argentinas, pp. 311-327
- Flügel, E., (1982) Microfacies Analysis of Limestones, 633p. , Springer Verlag. Berlin
- Folk, A., Practical petrographical classification of limestones (1959) American Association of Petroleum Geologists Bulletin, 41 (1), pp. 1-38
- Folk, A., Spectral subdivision of limestones types (1962) American Association of Petroleum Geologists Memoir, 1, pp. 61-84
Citas:
---------- APA ----------
Armella, C., Cabaleri, N. & Valencio, S. (1996) . Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province . Revista de la Asociacion Geologica Argentina, 51(2), 165-176.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v51_n2_p165_Armella [ ]
---------- CHICAGO ----------
Armella, C., Cabaleri, N., Valencio, S. "Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province " . Revista de la Asociacion Geologica Argentina 51, no. 2 (1996) : 165-176.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v51_n2_p165_Armella [ ]
---------- MLA ----------
Armella, C., Cabaleri, N., Valencio, S. "Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province " . Revista de la Asociacion Geologica Argentina, vol. 51, no. 2, 1996, pp. 165-176.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v51_n2_p165_Armella [ ]
---------- VANCOUVER ----------
Armella, C., Cabaleri, N., Valencio, S. Paleoenvironmental model of La Flecha Formation (Upper Cambrian) from Jáchal region, San Juan province . Rev. Asoc. Geol. Argent. 1996;51(2):165-176.Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v51_n2_p165_Armella [ ]
