Depósitos estuarinos en la Formación Río Baguales (Chattiano-Aquitaniano), Provincia de Magalla- nes, Chile

Jacobus P. le Roux, Jacqueline Puratich, F. Amaro Mourgues, José Luis Oyarzún, Rodrigo A. Otero, Teresa Torres, Francisco Hervé

Resultado de la investigación: Article

13 Citas (Scopus)

Resumen

Very little work has been done on the stratigraphy and sedimentology of the upper Oligocene-Lower Miocene Río Baguales Formation in the Magallanes Province of southern Chile since its original definition in 1957. A detailed stratigraphic section of the upper part of the formation exposed west of the Baguales River is presented, with an interpretation of depositional environments. This indicates a prograding shoreline in which estuary mouth, middle estuary (lagoon) and bay head delta facies are represented. Large-scale delta slope foresets indicate progradation towards the north and northwest, whereas southeast-directed cross-beds on the delta front probably suggest wave action. The general sequence reflects a gradual sea-level fall largely counteracted by tectonic subsidence, which provided the ne- cessary accommodation space for thick tidal flat and subtidal deposits to accumulate. A longer period of transgression towards the top of the succession may be related to a rise in sea-level or accelerated tectonic subsidence, whereas a major regression commencing at around 23.3 Ma probably coincides with the opening of the Drake Passage and the growth of the East Antarctic Ice Sheet.

Idioma originalSpanish
Páginas (desde-hasta)329-344
Número de páginas16
PublicaciónAndean Geology
Volumen37
N.º2
EstadoPublished - 1 dic 2010

Huella dactilar

Subsidence
Sea level
Estuaries
Tectonics
Deposits
Sedimentology
estuary
Stratigraphy
Ice
subsidence
sea level
tectonics
Rivers
wave action
progradation
tidal flat
sedimentology
depositional environment
transgression
ice sheet

ASJC Scopus subject areas

  • Geology
  • Geochemistry and Petrology
  • Stratigraphy
  • Palaeontology

Citar esto

le Roux, J. P., Puratich, J., Amaro Mourgues, F., Oyarzún, J. L., Otero, R. A., Torres, T., & Hervé, F. (2010). Depósitos estuarinos en la Formación Río Baguales (Chattiano-Aquitaniano), Provincia de Magalla- nes, Chile. Andean Geology, 37(2), 329-344.
le Roux, Jacobus P. ; Puratich, Jacqueline ; Amaro Mourgues, F. ; Oyarzún, José Luis ; Otero, Rodrigo A. ; Torres, Teresa ; Hervé, Francisco. / Depósitos estuarinos en la Formación Río Baguales (Chattiano-Aquitaniano), Provincia de Magalla- nes, Chile. En: Andean Geology. 2010 ; Vol. 37, N.º 2. pp. 329-344.
@article{0887b54249834e2a82092707e76ceaca,
title = "Dep{\'o}sitos estuarinos en la Formaci{\'o}n R{\'i}o Baguales (Chattiano-Aquitaniano), Provincia de Magalla- nes, Chile",
abstract = "Very little work has been done on the stratigraphy and sedimentology of the upper Oligocene-Lower Miocene R{\'i}o Baguales Formation in the Magallanes Province of southern Chile since its original definition in 1957. A detailed stratigraphic section of the upper part of the formation exposed west of the Baguales River is presented, with an interpretation of depositional environments. This indicates a prograding shoreline in which estuary mouth, middle estuary (lagoon) and bay head delta facies are represented. Large-scale delta slope foresets indicate progradation towards the north and northwest, whereas southeast-directed cross-beds on the delta front probably suggest wave action. The general sequence reflects a gradual sea-level fall largely counteracted by tectonic subsidence, which provided the ne- cessary accommodation space for thick tidal flat and subtidal deposits to accumulate. A longer period of transgression towards the top of the succession may be related to a rise in sea-level or accelerated tectonic subsidence, whereas a major regression commencing at around 23.3 Ma probably coincides with the opening of the Drake Passage and the growth of the East Antarctic Ice Sheet.",
keywords = "Estuary, Gilbert-type delta, Oligocene-Miocene sea-level changes, Polykladichnus",
author = "{le Roux}, {Jacobus P.} and Jacqueline Puratich and {Amaro Mourgues}, F. and Oyarz{\'u}n, {Jos{\'e} Luis} and Otero, {Rodrigo A.} and Teresa Torres and Francisco Herv{\'e}",
year = "2010",
month = "12",
day = "1",
language = "Spanish",
volume = "37",
pages = "329--344",
journal = "Andean Geology",
issn = "0718-7092",
publisher = "Servicio Nacional de Geologia y Mineria",
number = "2",

}

le Roux, JP, Puratich, J, Amaro Mourgues, F, Oyarzún, JL, Otero, RA, Torres, T & Hervé, F 2010, 'Depósitos estuarinos en la Formación Río Baguales (Chattiano-Aquitaniano), Provincia de Magalla- nes, Chile', Andean Geology, vol. 37, n.º 2, pp. 329-344.

Depósitos estuarinos en la Formación Río Baguales (Chattiano-Aquitaniano), Provincia de Magalla- nes, Chile. / le Roux, Jacobus P.; Puratich, Jacqueline; Amaro Mourgues, F.; Oyarzún, José Luis; Otero, Rodrigo A.; Torres, Teresa; Hervé, Francisco.

En: Andean Geology, Vol. 37, N.º 2, 01.12.2010, p. 329-344.

Resultado de la investigación: Article

TY - JOUR

T1 - Depósitos estuarinos en la Formación Río Baguales (Chattiano-Aquitaniano), Provincia de Magalla- nes, Chile

AU - le Roux, Jacobus P.

AU - Puratich, Jacqueline

AU - Amaro Mourgues, F.

AU - Oyarzún, José Luis

AU - Otero, Rodrigo A.

AU - Torres, Teresa

AU - Hervé, Francisco

PY - 2010/12/1

Y1 - 2010/12/1

N2 - Very little work has been done on the stratigraphy and sedimentology of the upper Oligocene-Lower Miocene Río Baguales Formation in the Magallanes Province of southern Chile since its original definition in 1957. A detailed stratigraphic section of the upper part of the formation exposed west of the Baguales River is presented, with an interpretation of depositional environments. This indicates a prograding shoreline in which estuary mouth, middle estuary (lagoon) and bay head delta facies are represented. Large-scale delta slope foresets indicate progradation towards the north and northwest, whereas southeast-directed cross-beds on the delta front probably suggest wave action. The general sequence reflects a gradual sea-level fall largely counteracted by tectonic subsidence, which provided the ne- cessary accommodation space for thick tidal flat and subtidal deposits to accumulate. A longer period of transgression towards the top of the succession may be related to a rise in sea-level or accelerated tectonic subsidence, whereas a major regression commencing at around 23.3 Ma probably coincides with the opening of the Drake Passage and the growth of the East Antarctic Ice Sheet.

AB - Very little work has been done on the stratigraphy and sedimentology of the upper Oligocene-Lower Miocene Río Baguales Formation in the Magallanes Province of southern Chile since its original definition in 1957. A detailed stratigraphic section of the upper part of the formation exposed west of the Baguales River is presented, with an interpretation of depositional environments. This indicates a prograding shoreline in which estuary mouth, middle estuary (lagoon) and bay head delta facies are represented. Large-scale delta slope foresets indicate progradation towards the north and northwest, whereas southeast-directed cross-beds on the delta front probably suggest wave action. The general sequence reflects a gradual sea-level fall largely counteracted by tectonic subsidence, which provided the ne- cessary accommodation space for thick tidal flat and subtidal deposits to accumulate. A longer period of transgression towards the top of the succession may be related to a rise in sea-level or accelerated tectonic subsidence, whereas a major regression commencing at around 23.3 Ma probably coincides with the opening of the Drake Passage and the growth of the East Antarctic Ice Sheet.

KW - Estuary

KW - Gilbert-type delta

KW - Oligocene-Miocene sea-level changes

KW - Polykladichnus

UR - http://www.scopus.com/inward/record.url?scp=79955700287&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:79955700287

VL - 37

SP - 329

EP - 344

JO - Andean Geology

JF - Andean Geology

SN - 0718-7092

IS - 2

ER -

le Roux JP, Puratich J, Amaro Mourgues F, Oyarzún JL, Otero RA, Torres T y otros. Depósitos estuarinos en la Formación Río Baguales (Chattiano-Aquitaniano), Provincia de Magalla- nes, Chile. Andean Geology. 2010 dic 1;37(2):329-344.