Fluvial architecture variations linked to changes in accommodation space: Río Chico Formation (Late Paleocene), Golfo San Jorge basin, Argentina

Foix, Nicolás; Paredes, José Matildo; Giacosa, Raúl Eduardo

doi:10.1016/j.sedgeo.2013.07.001

Cited by 55 publications

(18 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A C C E P T E D M A N U S C R I P T Franchi and Page (1980), Sciutto (1981), Barcat et al (1989), Fitzgerald (1990), Richards and Hilliers (2000), Homovc and Constantini (2001), Panza et al (2001), Parada et al (2001), Demant et al (2007, Suarez et al (2009aSuarez et al ( ), (2014, Sylwan et al (2001), Figari (2005, Ruiz et al (2006), Césari et al (2011), Continanzia et al (2011), Homovc et al (2011, Foix et al (2013), Pérez Loinaze et al (2013 Ross et al (1996), Figari et al (1999, Homovc and Constantini (2001), Sylwan et al (2001), Lagabrielle et al, 2004, Folguera and, Anselmi et al (2000), Silva Nieto (2005), Continanzia et al (2011), Miccucci et al (2011, Orts et al (2012), Bilmes et al (2013). Moho geometry at section B has been taken from Cornaglia et al (2009).…”

Section: Discussionmentioning

confidence: 99%

“…Contrastingly, 2-D and 3-D seismic data recorded to the east at the San Jorge Gulf Basin, suggest that rifting occurred during the deposition of the Chubut Group, and even during following stages related to the deposition of Salamanca Fm. and Rio Chico Group (Hechem, 1998;Figari et al, 1999;Georgieff et al, 2009;Foix et al, 2012Foix et al, , 2013Paredes et al, 2013) (Fig.2 and 14A). During this basin stage an important change in the stress field, respect to the previous Neocomian depocenters of NW, NNW and minor E-W trending, reactivated and nucleated WNW and E-W extensional structures that defined a general E-W rift (Uliana et al, 1989;Chelotti, 1997;Figari et al, 1999) ( Fig.…”

Section: Accepted Manuscriptmentioning

confidence: 98%

See 1 more Smart Citation

Patagonian broken foreland and related synorogenic rifting: The origin of the Chubut Group Basin

et al. 2015

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 98%

Patagonian broken foreland and related synorogenic rifting: The origin of the Chubut Group Basin

et al. 2015

View full text Add to dashboard Cite

“…These sequences occur as fining-upward fluvial successions that are weathered on top by mature paleosols or are erosively overlain by the coarser grained base of the succeeding sequence without an intervening paleosol. Changes in A/S ratio result in systematic changes in the relative proportion of channel fills and floodplain deposits and allow the subdivision of the nonmarine depositional sequences into low-and high-accommodation systems tracts (e.g., Catuneanu, 2006;Beilinson et al, 2013;Foix et al, 2013). A similar stratigraphic packaging, forms the basic motif of the middle-late Quaternary deposits from central Po Plain (Amorosi and Colalongo, 2005;Amorosi et al, 2008) and Molise region (Bracone et al, 2012).…”

Section: Facies Architecture and Sequence Stratigraphymentioning

confidence: 99%

Major controls on architecture, sequence stratigraphy and paleosols of middle Pleistocene continental sediments ("Qc Unit"), eastern central Italy

2015

View full text Add to dashboard Cite

Middle Pleistocene continental sediments in central Italy ("Qc Unit") record the oldest fluvial accumulation along the uplifting margin of the Peri-Adriatic basin. The architecture of the sediment body can be divided into two unconformity-bounded, fining-upward cycles interpreted as genetically related depositional sequences. These sequences highlight the systematic adjustment of the fluvial systemto changes in the ratio between accommodation space and sediment supply (A/S ratio) and, from base to top, comprise the following surfaces and stratal components: (i) a regionally correlative sequence boundary resulting from an A/S ratio ≤ 0; (ii) a low-accommodation systems tract characterized by conglomerate-rich, amalgamated channel fills and recording an A/S ratio b 1; (iii) an expansion surface marking the turnaround point from low-accommodation systems tract to high-accommodation systems tract deposits; (iv) a high-accommodation systems tract dominated by floodplain fines encasing lens-like, fluvial channel deposits and denoting an A/S ratio N 1; and (v) amature red argillic paleosol. To constrain the climatic signal for paleosols formation, the two sequence-capping mature paleosols have been investigated. The results of these studies suggest that they were developed under humid and warm climatic conditions associated with interglacial phases, which have been correlatively attributed to Marine Oxygen Isotope\ud Stages 11 and 9

show abstract

“…80 cm to 6.4 m thick beds Suspension settling from weak currents or standing water; lack of lamination due to (i) flocculation of clay suspension or (ii) loss of lamination associated intensive bioturbation; post-depositional redness under oxidant conditions (Miall 1977, Foix et al 2013.…”

Section: Fmmentioning

confidence: 99%

High resolution stratigraphy of initial stages of rifting, Sergipe-Alagoas Basin, Brazil

et al. 2017

View full text Add to dashboard Cite

ABSTRACT:The present work aims to characterize the NeoJurassic to Neocomian succession of the Sergipe-Alagoas Basin, located in northeast region of Brazil, in order to discover the influence of tectonics on sedimentation in detailed scale and thus separating this sedimentary succession in tectono-stratigraphic units. Fieldwork observations and stratigraphic sections analysis allowed subdividing this rift succession into three depositional units that indicate different paleogeographic contexts. Unit I, equivalent to the top of Serraria Formation, is characterized by braided fluvial channel deposits, with paleocurrent direction to SE; unit II, corresponding to the base of Feliz Deserto Formation, is composed of anastomosed fluvial channel and floodplain facies associations; and unit III, equivalent to the major part of Feliz Deserto Formation, is characterized by delta deposits with polymodal paleocurrent pattern. The changes of depositional system, as well as paleocurrent direction, suggest that the previously described units were deposited in different evolutionary stages of rifting. Units I and II represent the record of a wide and shallow basin associated with the first stage of rifting. Unit I is characterized by incipient extensional stress generating a wide synclinal depression, associated to the low rate of accommodation and low tectonic activity. These two parameters progressively increase in unit II. The paleocurrent direction of unit I indicates that the depocenter of this wide basin was located at SE of the studied area. No conclusion could be done on paleocurrent from unit II because of the low amount of measurements. Unit III suggests a second stage marked by a deeper basin context, with a high rate of accommodation space associated with the lateral connection of faults and individualization of the half-graben. The scattering in the paleocurrent direction in this unit indicates sedimentary influx coming from several sectors of the half-graben. The boundary between these two stages is marked by a flooding surface that indicates an extremely fast transition and suggests a radical change in geometric characteristics of the basin due to the increase of tectonic activity.

show abstract

Fluvial architecture variations linked to changes in accommodation space: Río Chico Formation (Late Paleocene), Golfo San Jorge basin, Argentina

Cited by 55 publications

References 58 publications

Patagonian broken foreland and related synorogenic rifting: The origin of the Chubut Group Basin

Patagonian broken foreland and related synorogenic rifting: The origin of the Chubut Group Basin

Major controls on architecture, sequence stratigraphy and paleosols of middle Pleistocene continental sediments ("Qc Unit"), eastern central Italy

High resolution stratigraphy of initial stages of rifting, Sergipe-Alagoas Basin, Brazil

Contact Info

Product

Resources

About