Navegar

Colección

Datos Estadísticas

Artículo

Estamos trabajando para incorporar este artículo al repositorio
Consulte la política de Acceso Abierto del editor

Abstract:

The stratigraphic expression and geological significance of the contact between the Vinchina (Late Miocene) and Toro Negro (Late Miocene- Pliocene) formations (Turner, 1964; Ciccioli et al., 2010) is analyzed in this paper. These units with more than 8,000 m of sediments (Ramos, 1970; Tripaldi et al., 2001; Ciccioli, 2008) represent the main units of the infill of the Vinchina Basin (Ciccioli et al., 2010) (Figs. 1-3) during the transition from a simple foreland basin stage to a broken foreland one (Ciccioli, 2008; Ciccioli, et al., in press). They mostly represent sedimentation by fluvial and aeolian processes in an inland basin during an overall warm and dry climate period (Tripaldi et al., 2001; Ciccioli, 2008). Thus, major changes in sedimentation are though to correspond with tectonic events (Ciccioli et al., in press). The lower member of the Vinchina Formation and the upper member of the Toro Negro Formation present a more uniform and extended sedimentation pattern. In contrast, the upper member of the Vinchina Formation and the lower member of the overlying Toro Negro Formation show important lateral (north-south) facies changes (Fig. 4). The along-strike differences in the character of the discontinuity marking the boundary between the Vinchina and Toro Negro formations, is the most meaningful of them all. Six sections, from north to south (La Aguada creek, Los Pozuelos creek, north La Troya river, south La Troya river, Campo Negro and del Yeso creek) were measured across the boundary between the Vinchina and Toro Negro formations along the Sierra de Los Colorados (Fig. 2). Facies associations within this interval were defined and sedimentary paleoenvironments interpreted. The information gathered from these sections allowed interpreting the contact between the Vinchina and Toro Negro formations as a high-relief incision surface that in some places suppresses up to 25% of the underlying Vinchina Formation (Figs. 4 and 5). This surface forms a west-east oriented paleovalley in the north (La Aguada and Los Pozuelos sections), is a low-relief incision surface (showing minimum stratigraphic suppression) in the central part of the study area (south La Troya river and Campo Negro sections) and becomes in a non-erosive planar surface at the southern end (del Yeso creek, Figs. 6 and 7). Considering the available radiometric data (Ciccioli et al., 2010), the age of the unconformity can be bracketed between 19.1 and 8.6 Ma. Four stratigraphic sections were defined in the deposits of the Toro Negro Formation overlying the incision surface (Table 2). Section S1 is composed of extraformational conglomerates, agglomerates and intraformational breccias. Coarse-grained conglomerates, gravelly sandstones and coarsegrained sandstones predominate in section S2 together with scarce mudstones and very fine-grained sandstones. Section S3 comprises coarsening-upward sequences composed of mudstones, sandstones and conglomerates. Finally section S4 is made up by mudstones and fine-grained sandstones with scarce levels of conglomerates and coarse-grained sandstones. Section S1 is interpreted as incision-confined fluvial deposits accumulated under low-accommodation conditions. Section S2 is also interpreted as confined to the paleovalley but with increasing accommodation space. Finally sections S3 and S4 mark the shift from confined to unconfined conditions under high accommodation. The Vinchina Formation was reported to crop out in the higher areas of the Famatina range but up to now there is no record of the Toro Negro Formation in that area. The deep, long-lived, west-east oriented paleovalley described in the northern part of the area is an atypical feature for the foreland basin model. However, the lack of a relationship with contemporaneous marine deposits and evidences of an arid climate throughout the deposition of the Vinchina and Toro Negro Formations suggest a tectonic control for the changes in the erosion vs accumulation rates in the basin. Therefore the incision and infill of the paleovalley is interpreted using the relationship between the fluvial equilibrium-profile and the channel profile (C.f. Dalrymple et al., 1998; Shanley and McCabe, 1994; Blum and Törnqvist, 2000) (Fig. 8) The meandering fluvial system interpreted from deposits of Facies Association (FA) V of the Vinchina Formation (Tripaldi et al., 2001) represents a stage of high accommodation (point A in Fig. 8). After that stage, a progressive lowering of the relative equilibrium profile reduces the accommodation the development of amalgamated channel belts of the fluvial systems interpreted for FA VII (Tripaldi et al., 2001) similar to the "unconfined stream equilibrium profile low" of Dalrymple et al. (1998).This trend continued until the equilibrium profile places below the channel profile. At that point erosion and sediment bypass took place. The major degree on incision and sediment bypass occurred at point C in figure 8 but erosion and down-cutting occurs until point E. At this latter point the equilibrium profile passes above the stream profile and aggradation begins within the incised valley ("confined stream equilibrium profile low" de Dalrymple et al., 1998). Finally, maximum accommodation (point F in figure 8) is represented by the anastomosing fluvial system with encased channels in fine-grained overbank deposits of section S4. As neither the west-east orientation of the observed paleovalley nor the evolution of the sedimentary environments can be explained by the eastward advance of the fold and thrust belt in a simple foreland basin we interpret that the uplift of the Famatina range (cf. Ramos et al., 2002; Davila and Astini, 2007; Davila, 2010) to the east of the studied area (Fig. 9) might have produced a narrow area of high subsidence modifying the stream profiles of the rivers draining from the Andes. In the distal area (Los Colorados range) stream profile dropped below the equilibrium profile causing deep incision while close to the uplifted range rapid deposition might have occurred. Therefore the incision surface separating Vinchina and Toro Negro Formations is related to the main phases of uplift of the western Famatina range (Figs. 10 y 11). This event produced accelerated subsidence and increased accommodation in the proximal area and lowering of the equilibrium fluvial profiles (and incision) in the distal areas to the west (Fig. 10b). During post-tectonic times, subsidence and accommodation rates decrease close to the uplifted area and the relative rise of the fluvial equilibrium profiles in the distal area with renewed aggradation (Fig. 10c). A model explaining the interpreted changes in accommodation relative to the subsidence due to the uplift of the Famatina is shown in figure 11. © Asociación Argentina de Sedimentología.

Registro:

Documento: Artículo
Título:Analysis of the contact between the Vinchina and Toro Negro formations (Sierra de Los Colorados, Province of La Rioja, Argentina), and its tectonic implications
Autor:Limarino, C.O.; Ciccioli, P.L.; Marenssi, S.A.
Filiación:Departamento de Ciencias Geológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires - CONICET, Buenos Aires, Argentina
Instituto Antártico Argentino, Cerrito 1248, Buenos Aires, Argentina
Palabras clave:Argentina; Cenozoic; Incision surface; Paleovalley; Vinchina basin
Año:2010
Volumen:17
Número:2
Página de inicio:113
Página de fin:132
Título revista:Latin American Journal of Sedimentology and Basin Analysis
Título revista abreviado:Latin Am. J. Sedimentol. Basin Anal.
ISSN:16697316
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16697316_v17_n2_p113_Limarino

Referencias:

  • Arnott, R.W., Zaitlin, R.A., Potockt, D.J., Stratigraphic response to sedimentation in a net-accommodation-limited setting, Lower Cretaceous Basal Quartz, south-central Alberta (2002) Bulletin of Canadian Petroleum Geology, 50, pp. 92-104
  • Borello, A., Cuerda, A., Grupo Río Huaco (Triásico), San Juan. Comisión de Investigaciones Científicas de la provincia de Buenos Aires (1968) Noticias, 7, pp. 3-15
  • Blum, M.D., Törnqvist, T., Fluvial responses to climate and sea level changes a review and look forward (2000) Sedimentology, 47 (S1), pp. 2-48
  • Caselli, A.T., Marenssi, S., Tripaldi, A., Limarino, C.O., Gagliardo, M.L., Análisis paleoambiental y correlación estratigráfica de la Formación Puesto La Flecha (Terciario), provincia de La Rioja (2002) XV Congreso Geológico Argentino, 1, pp. 679-683. , Actas El Calafate
  • Catuneanu, O., (2006) Principles of Sequence Stratigraphy, p. 375. , Elsevier, Amsterdam
  • Ciccioli, P.L., (2008) Evolución Paleoambiental, Estratigrafía y Petrología Sedimentaria de la Formación Toro Negro (Neógeno), Sierras Pampeanas Noroccidentales (Provincia de la Rioja), p. 336. , Tesis Doctoral, Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, (inédito)
  • Ciccioli, P.L., Marenssi, S.A., Limarino, C.O., Cambio en la arquitectura de los sistemas fluviales en el límite de las formaciones Vinchina y Toro Negro (Neógeno), Sierra de los Colorados (provincia de La Rioja) (2004) X Reunión Argentina de Sedimentología, 1, pp. 41-43. , Actas San Luis
  • Ciccioli, P.L., Limarino, C.O., Marenssi, S.A., Nuevas edades radimétricas para la Formación Toro Negro en la Sierra de Los Colorados, Sierras Pampeanas Noroccidentales, provincia de La Rioja (2005) Revista de la Asociación Geológica Argentina, 60, pp. 251-254
  • Ciccioli, P.L., Marenssi, S.A., Limarino, C.O., Procedencia de la Formación Toro Negro: Un estudio complementario a partir de modas detríticas de areniscas y componentes modales de conglomerados (2008) XII Reunión Argentina de Sedimentología, 1, p. 57. , Actas Buenos Aires
  • Ciccioli, P.L., Limarino, C.O., Marenssi, S.A., Tedesco, A.M., Tripaldi, A., Estratigrafía de la Cuenca de Vinchina (Terciario), Sierras Pampeanas, Provincia de La Rioja (2010) Revista de la Asociación Geológica Argentina, 66 (1), pp. 146-155
  • Ciccioli, P.L., Limarino, C.O., Marenssi, S.A., Tedesco, A.M., Tripaldi, A., Tectosedimentary evolution of the La Troya-Vinchina depocenters (Northern Bermejo Basin Tertiary), La Rioja Province, Argentina Cenozoic Geology of the Central Andes of Argentina, , en prensa En J.A. Salfity y R.A. Marquillas (Eds.), Geological Society of America Special Publication (in press)
  • Dalrymple, M., Prosser, J., Williamsn, B., A dynamic systems approach to the regional controls on deposition and architecture of alluvial sequences, illustrated in the Statfjord Formation (United Kingdom, Northeern North Sea) (1998) Relative Role of Eustasy, Climate and Tectonism in Continental Rocks, 59, pp. 65-81. , SEPM Special Publication
  • Dávila, F.M., Dynamics of deformation and sedimentation in the northern Sierras Pampeanas: An integrated study of the Neogene Fiambalá Basin, NW Argentina. Comment and Discussion (2010) Geological Society of America Bulletin, 122, pp. 946-949
  • Dávila, F.M., Astini, R.A., Cenozoic provenance history of synorogenic conglomerates in western Argentina (Famatina belt): Implications for Central Andean foreland development (2007) Geological Society of America Bulletin, 119, pp. 609-622
  • Dávila, F.M., Astini, R.A., Jordan, T.E., Kay, S.M., Early Miocene andesite conglomerates in the Sierra de Famatina, broken foreland region of western Argentina, and documentation of magmatic broadening in the south-central Andes (2004) Journal of South American Earth Sciences, 17, pp. 89-101
  • Dávila, F.M., Collo, G., Nóbile, J., Astini, R.A., Gehrels, G., U-Pb detrital ages on a tuffaceous sandstone sheet in the Vinchina Formation, La Rioja: deposition and exhumation explications (2008) XVII Congreso Geológico Argentino, 1, pp. 65-96. , Actas San Salvador de Jujuy
  • Decelles, P.J., Gray, M.B., Ridgway, K.D., Cole, R.B., Pivnik, D.A., Pequera, N., Srivastava, P., Controls on synorogenic alluvial-fan architecture, Beartooth Conglomerate (Paleocene), Wyoming and Montana (1991) Sedimentology, 38, pp. 567-590
  • De La Fuente, M., Ciccioli, P.L., Limarino, C.O., Gutiérrez, P.R., Fauqué, L.E., Quelonios podocnemídidos en la Formación Puesto La Flecha (Oligoceno), Precordillera de La Rioja, Argentina (2003) Ameghiniana, 40, pp. 617-624
  • Durand, F.R., La tectónica cenozoica del Sistema del Famatina (1996) Geología Del Sistema Del Famatina, 19, pp. 343-357. , En F.G. Aceñolaza, H. Miller y A.J. Toselli, (Eds.), Münchner Geologische Heste A
  • Dykstra, M., Kneller, B., Milana, J.P., Deglacial and postglacial sedimentary architecture in a deeply incised paleovalleypaleofjord - The Pennsylvanian (late Carboniferous) Jejenes Formation, San Juan, Argentina (2006) Geological Society of America Bulletin, 118, pp. 913-937
  • Greb, S.F., Chesnut Jr., D.R., Lower and lower Middle Pennsylvanian fluvial to estuarine deposition, central Appalachian basin: Effects of eustasy, tectonics, and climate (1996) Geological Society American Bulletin, 108, pp. 303-317
  • Henry, L.C., Isbell, J.L., Limarino, C.O., McHenry, L.J., Fraiser, M.L., Mid-Carboniferous deglaciation of the Protoprecordillera, Argentina recorded in the Agua de Jagüel palaeovalley (2010) Palaeogeography, Palaeoclimatology, Palaeoecology, 298, pp. 112-129
  • Korus, J.T., Kvale, E.P., Eriksson, K.A., Joeckel, R.M., Compound paleovalley fills in the Lower Pennsylvanian New River Formation, West Virginia, USA (2008) Sedimentary Geology, 208, pp. 15-26
  • Krapovickas, V., Ciccioli, P.L., Mángano, M.G., Marsicano, C.A., Limarino, C.O., Paleobiology and paleoecology of an arid-semiarid Miocene South American ichnofauna in anastomosed fluvial deposits (2009) Palaeogeography, Palaeoclimatology, Palaeoecology, 284, pp. 129-152
  • Lancaster, S.T., Evolution of sediment accommodation space in steady state bedrock-incising valleys subject to episodic aggradation (2007) Journal of Geophysical Research, 113 (F04002), pp. 1-17
  • Limarino, C., Tripaldi, A., Marenssi, S., Net, L., Re, G., Caselli, A., Tectonic control on the evolution of the fluvial systems of the Vinchina Formation (Miocene), northwestern Argentina (2001) Journal of South American Earth Sciences, 14, pp. 751-762
  • Maisonave, H.M., (1979) Descripción Geológica de la Hoja 14c. Cerros Cuminchango (Provincias de la Rioja y Catamarca), p. 83. , Servicio Geológico Nacional. Boletín No 162, Buenos Aires
  • Makaske, B., Anastomosing rivers: A review of their classification, origin and sedimentary products (2001) Earth-Science Reviews, 53, pp. 149-196
  • Marenssi, S., Net, L., Caselli, A., Tripaldi, A., Limarino, C., Hallazgo e interpretación de discordancias intraformacionales en la Formación Vinchina (Neógeno), Quebrada de la Troya, La Rioja, Argentina (2000) Revista de la Asociación Geológica Argentina, 55, pp. 414-418
  • Melchor, R.N., Genise, J.F., Farina, J.L., Sánchez, M.V., Sarzetti, L., Visconti, G., Large striated burrows from fluvial deposits of the Neogene Vinchina Formation la Rioja, Argentina: A crab origin suggested by neoichnology and sedimentology (2010) Palaeogeography, Palaeoclimatology, Palaeoecology, 291, pp. 400-418
  • Miall, A.D., (1996) The Geology of Fluvial Deposits, p. 582. , Springer, Berlin
  • Mortimer, E., Carrapa, B., Coutand, I., Schoenbohm, L., Sobel, E.R., Sosa Gomez, J., Strecker, M.R., Fragmentation of a foreland basin in response to out-of-sequence basement uplifts and structural reactivation: El Cajón-Campo del Arenal basin, NW Argentina (2007) Geological Society of America Bulletin, 119, pp. 637-653
  • Ouchi, S., Response of alluvial rivers to slow active tectonic movement (1985) Geological Society American Bulletin, 896, pp. 504-515
  • Ramos, V.A., Estratigrafía y estructura del Terciario en la Sierra de los Colorados (Provincia de La Rioja), República Argentina (1970) Revista de la Asociación Geológica Argentina, 15 (3), pp. 359-382
  • Ramos, V.A., Los depósitos sinorogénicos terciarios de la región andina (1999) Geología Argentina, 29 (22), pp. 651-691. , En R. Caminos (Ed.), Anales del Instituto de Geología y Recursos Minerales
  • Ramos, V.A., Cristallini, E.O., Pérez, D.J., The Pampean flatslab of the Central Andes (2002) Journal of South American Earth Sciences, 15, pp. 59-78
  • Rossello, E.A., Mozetic, M.E., Cobbold, P.R., De Urreizttieta, M., Gapais, D., El espolón Umango-Maz y la conjugación sintaxial de los lineamientos Tucumán y Valle Fértil (La Rioja, Argentina), Actas Buenos Aires (1996) XIII Congreso Geológico Argentino y III Congreso de Exploración de Hidrocarburos, 2, pp. 187-194
  • Shanley, K.W., McCabe, P.J., Perspectives on the sequence stratrigraphy of continental strata: Report of a working Group at the 1991 NUNA Conference on High Resolution Sequence Stratigraphy (1994) American Association Petroleum Geologists Bulletin, 74, pp. 544-568
  • Tabbutt, K.D., Naeser, Ch.W., Jordan, T.E., Cerveny, P.F., New fissiontrack ages of Mio-Pliocene tuffs in the Sierras Pampeanas and Precordillera of Argentina (1989) Revista de la Asociación Geológica Argentina, 64 (1-4), pp. 408-419
  • Törnqvist, T.E., Wallinga, J., Murray, A.S., Dewolf, H., Cleveringa, P., De Gans, W., Response of the Rhine-Meuse system (west-central Netherlands) to the last Quaternary glacioeustatic cycles: A first assessment (2000) Global and Planetary Change, 27, pp. 89-111
  • Tripaldi, A., Limarino, C.O., Vallecito Formation (Miocene): The evolution of an eolian system in an Andean foreland basin (northwestern Argentina) (2005) Journal of South American Earth Sciences, 19, pp. 343-357
  • Tripaldi, A., Net, L., Limarino, L., Marenssi, S., Re, G., Caselli, A., Paleoambientes sedimentarios y procedencia de la Formación Vinchina, Mioceno, noroeste de la prov. de La Rioja (2001) Revista de la Asociación Geológica Argentina, 56, pp. 443-465
  • Turner, J.C.M., (1964) Descripción Geológica de la Hoja 15c. Vinchina (Provincia de la Rioja), p. 81. , Dirección Nacional de Geología y Minería, Boletín No 100, Buenos Aires
  • Varela, V., Sato, A.M., Basei, M.A.S., Siga, O., Proterozoico medio y Paleozoico inferior de la sierra de Umango, antepaís andino (29thS), Argentina: edades U-Pb y caracterizaciones isotópicas (2003) Revista Geológica de Chile, 30, pp. 265-284

Citas:

---------- APA ----------
Limarino, C.O., Ciccioli, P.L. & Marenssi, S.A. (2010) . Analysis of the contact between the Vinchina and Toro Negro formations (Sierra de Los Colorados, Province of La Rioja, Argentina), and its tectonic implications . Latin American Journal of Sedimentology and Basin Analysis, 17(2), 113-132.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16697316_v17_n2_p113_Limarino [ ]
---------- CHICAGO ----------
Limarino, C.O., Ciccioli, P.L., Marenssi, S.A. "Analysis of the contact between the Vinchina and Toro Negro formations (Sierra de Los Colorados, Province of La Rioja, Argentina), and its tectonic implications " . Latin American Journal of Sedimentology and Basin Analysis 17, no. 2 (2010) : 113-132.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16697316_v17_n2_p113_Limarino [ ]
---------- MLA ----------
Limarino, C.O., Ciccioli, P.L., Marenssi, S.A. "Analysis of the contact between the Vinchina and Toro Negro formations (Sierra de Los Colorados, Province of La Rioja, Argentina), and its tectonic implications " . Latin American Journal of Sedimentology and Basin Analysis, vol. 17, no. 2, 2010, pp. 113-132.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16697316_v17_n2_p113_Limarino [ ]
---------- VANCOUVER ----------
Limarino, C.O., Ciccioli, P.L., Marenssi, S.A. Analysis of the contact between the Vinchina and Toro Negro formations (Sierra de Los Colorados, Province of La Rioja, Argentina), and its tectonic implications . Latin Am. J. Sedimentol. Basin Anal. 2010;17(2):113-132.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16697316_v17_n2_p113_Limarino [ ]