Mio–Pliocene volcaniclastic deposits in the Famatina Ranges, southern Central Andes: A case of volcanic controls on sedimentation in broken foreland basins

Martina, Federico; Dávila, Federico M.; Astini, Ricardo A.

doi:10.1016/j.sedgeo.2005.10.002

Cited by 21 publications

(17 citation statements)

References 65 publications

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“…16.1 Ma with a depositional rate of 0.47 mm/year that increases up section to 1.77 mm/year near the top. It is noteworthy that sedimentation rates increase with coarser accumulation and or volcanogenic input as suggested also for the younger and overlying Angulos Group (Martina et al 2006). …”

Section: Normalized Intensitymentioning

confidence: 59%

“…These ages are essential for our magneto correlation. Supplementary minimum ages come from the overlying Angulos Group, recently constrained between the Middle to Late Miocene to Pliocene (Tabbutt 1990;Dávila 2005;Barreda et al 2006;Martina et al 2006). In particular, the palinologic study of Barreda et al (2006) indicates a Middle Miocene age for the base of the Fig.…”

Section: Analysis and Interpretationmentioning

confidence: 96%

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Magnetostratigraphy and paleomagnetism of early and middle Miocene synorogenic strata: basement partitioning and minor block rotation in Argentine broken foreland

Zambrano

Rapalini

Dávila

et al. 2010

Int J Earth Sci (Geol Rundsch)

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Magnetostratigraphic and paleomagnetic studies on early Andean synorogenic strata (Del Crestón Fm.), in the Famatina Belt (28.7°S, 67.5°W) clarify details of chronology that permit calculation of sedimentation rates within the broken foreland of west Argentina. The Del Crestón Fm represents the first record of broken foreland sedimentation within the southern Central Andean belt and the earliest retroarc volcanic rocks exposed several hundred kilometers from the trench. Twenty-five out of 49 sites collected along the succession presented a primary remanence, as determined through positive fold and reversal tests. Correlation of the local magnetic polarity section with the global polarity time scale indicates that the sedimentation of Del Crestón Fm started at *16.7 Ma and continued until *14.5 Ma. The youngest strata are represented by conglomerates bearing abundant Lower Paleozoic granite boulders indicating unroofing of the crystalline basement within the NW Sierras Pampeanas. This result supports the hypothesis of an early broken foreland stage at these latitudes of the Andes, with involvement of the basement in deformation and coeval retroarc volcanism, common attributes of flat-subduction regimes. A mean site paleomagnetic direction of Dec: 6.3°, Inc: -43.6°(a95: 8.0°, N = 24) confirm our earlier intrepretation that the central part of the Famatina Belt within the Sierras Pampeanas did not undergo large vertical axes rotations since the Middle Miocene.

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Section: Normalized Intensitymentioning

confidence: 59%

Section: Analysis and Interpretationmentioning

confidence: 96%

Magnetostratigraphy and paleomagnetism of early and middle Miocene synorogenic strata: basement partitioning and minor block rotation in Argentine broken foreland

Zambrano

Rapalini

Dávila

et al. 2010

Int J Earth Sci (Geol Rundsch)

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“…This coexistence provides the occurrence of volcanic and non-volcanic deposits, as it has been reported in different geotectonic and paleoenvironmental settings, including large-volume stratovolcanoes, calderas and small-volume monogenetic volcanic fields (e.g. Smith, 1987Smith, , 1991White, 1990White, , 1991Haughton, 1993;Eriksson and Simpson, 1993;Hayes et al, 2002;Gran and Montgomery, 2005;Kataoka, 2005;and Martina et al, 2005;Manville et al, 2009).…”

Section: Introductionmentioning

confidence: 52%

Interaction between intra-continental sedimentary basins and small-volume monogenetic volcanism: Argamasilla and Calzada-Moral basins, Campo de Calatrava Volcanic Field, Spain

Hernández

Moro

Gómez-Fernández

et al. 2013

Journal of Iberian Geology

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We study the volcaniclastic lithofacies interbedded between siliciclastic and carbonate sediments of Cenozoic-Quaternary age (8.7 Ma to 7,000 BP) in Argamasilla and Calzada-Moral basins (Central Spain). The siliciclastic and carbonate deposits correspond to fluvio-lacustrine sedimentary environments. The volcanic materials consist of primary and reworked volcaniclastic successions sourced from the Campo de Calatrava Volcanic Field. Pyroclastic deposits are related to monogenetic and small-volume volcanic centres, such as scoria cones, tuff rings and maars, corresponding to Strombolian and phreatomagmatic eruptive styles.Taking into account sedimentological constraints seven volcaniclastic lithofacies were distinguished. Type A corresponds to subaerial pyroclastic fall deposits, as is inferred by the common disorganization of the deposit, their breccia-like aspect with presence of large bombs, poor sorting and lack of tractional sedimentary structures. Types B1, B2, B3 and B4 have different volcanic sources and are interpreted to be the product of low-density (dilute) pyroclastic surges, with textural features indicative of fluctuations in flow regime. This interpretation is based on the fabric and grain size of pyroclasts, together with the size and geometry of the internal sedimentary structures. Type C represents a secondary volcanic deposit related to volcanic sediments reworked by transitional hyperconcentrated flows and dilute fluvial processes, having subsequently accumulated in braided fluvial systems. Finally, the Type D is interpreted as an intra-maar scoria/spatter cones related to the development of maars.

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“…been proved to be an important subsidence mechanism in other peri-volcanic basins (Bahlburg and Furlong, 1996;Watts, 2001;Martina et al, 2006), increasing the mechanical subsidence associated to coeval extensional tectonics (Smith et al, 2002). Further studies, out of the scope of this work, should bring new insights into the links between the igneous activity and the changes in the subsidence of the basin during the Cenozoic.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 84%

A late eocene-early Oligocene transgressive event in the Golfo San Jorge basin: Palynological results and stratigraphic implications

Paredes

Foix

Guerstein

et al. 2015

Journal of South American Earth Sciences

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A new Cenozoic dataset in the subsurface of the South Flank of the Golfo San Jorge Basin (Santa Cruz province) allowed to identify a non-previously recognized transgressive event of late Eocene to early Oligocene age. Below of a marine succession containing a dinoflagellate cyst assemblage that characterizes the C/G palynological zone of the Chenque Formation (early Miocene), a 80-110 m thick marine succession contains a palynological assemblage integrated by Gelatia inflata, Diphyes colligerum and Reticulatosphaera actinocoronata supporting the occurrence of a marine incursion in the M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT basin during the Eocene-Oligocene transition (EOT). The new lithostratigraphic unit -here defined as El Huemul Formation -covers in sharp contact to the Sarmiento Formation, and become thinner from East to West; the unit has been identified in about 1,800 well logs covering up to 3,500 km 2 , and its subsurface distribution exceed the boundaries of the study area. The El Huemul Formation consists of a thin lag of glauconitic sandstones with finingupward log motif, followed by a mudstone-dominated succession that coarsening-upward to sandstones, evidencing a full T-R cycle. Preservation of the El Huemul Formation in the subsurface of the South Flank has been favored by the reactivation of WNW-ESE late Cretaceous normal faults, and by the generation of N-S striking normal faults of PaleoceneEocene age. Flexural loading associated to igneous intrusions of Paleocene?-middle Eocene age also promoted the increase of subsidence in the South Flank of the basin prior to the transgression.

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Mio–Pliocene volcaniclastic deposits in the Famatina Ranges, southern Central Andes: A case of volcanic controls on sedimentation in broken foreland basins

Cited by 21 publications

References 65 publications

Magnetostratigraphy and paleomagnetism of early and middle Miocene synorogenic strata: basement partitioning and minor block rotation in Argentine broken foreland

Magnetostratigraphy and paleomagnetism of early and middle Miocene synorogenic strata: basement partitioning and minor block rotation in Argentine broken foreland

Interaction between intra-continental sedimentary basins and small-volume monogenetic volcanism: Argamasilla and Calzada-Moral basins, Campo de Calatrava Volcanic Field, Spain

A late eocene-early Oligocene transgressive event in the Golfo San Jorge basin: Palynological results and stratigraphic implications

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