El volcanismo jurásico superior de la Formación Río Damas-Tordillo (33°-35,5°S): antecedentes su sobre petrogénesis, cronología, proveniencia e implicancias tectónicas

Translated title of the contribution: The Upper Jurassic Volcanism of the Río Damas-Tordillo Formation (33°-35.5°s): Insights on Petrogenesis, Chronology, Provenance and Tectonic Implications

Pablo Rossel, Verónica Oliveros, José Mescua, Felipe Tapia, Mihai N Ducea, Sergio Calderón, Reynaldo Charrier, Derek Hoffman

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The uppermost Jurassic continental and volcanic deposits of the Río Damas-Tordillo Formation represent an interval of intense continental deposition within the Jurassic to Early Cretaceous dominantly marine environment of the Mendoza-Neuquén back-arc basin. Stratigraphic and geochronological data indicate that progressive emersion of the arc and forearc domain, disconnecting the back-arc region from the Pacific Ocean, occurred during occurred during the Late Jurassic and probably the Early Cretaceous (~160-140 Ma). This change in the margin configuration induced a marine regression and the subsequent deposition of continental material in the back-arc basin. The most likely source of the sediments would have been the Jurassic arc, located west of the back-arc basin. The maximum depositional age of 146.4±4.4 Ma obtained from a red sandstone immediately below volcanic rocks confirms recent Tithonian maximum depositional ages assigned to the Río Damas-Tordillo Formation, and suggests that the volcanic rocks, overlain by marine fossiliferous Tithoninan-Hauterivian sequences, should have erupted within a short time span during the Late Jurassic. Volcanism was probably facilitated by the presence of extensional structures related to the formation of the back-arc basin. Elemental and isotopic data, along with forward AFC models, suggest a depleted sub-arc asthenospheric mantle source for the volcanic rocks and the fractionation of olivine and plagioclase, along with small volumes of lower crust assimilation, as the main processes involved in the magmatic evolution. It is not possible to establish a different source and petrogenetic conditions for the Río Damas-Tordillo Formation and the magmatism in the arc domain located further west, at the present-day Coastal Cordillera.

Original languageSpanish
Pages (from-to)529-557
Number of pages29
JournalAndean Geology
Volume41
Issue number3
DOIs
StatePublished - Sep 1 2014

Fingerprint

Volcanic rocks
Tectonics
petrogenesis
provenance
chronology
volcanism
Jurassic
tectonics
volcanic rock
basin
Fractionation
Sandstone
Sediments
Cretaceous
Deposits
emersion
Hauterivian
Tithonian
cordillera
mantle source

Keywords

  • Central Chile
  • Detrital zircons
  • Isotopes
  • Jurassic
  • Volcanism

ASJC Scopus subject areas

  • Geology
  • Geochemistry and Petrology
  • Palaeontology
  • Stratigraphy

Cite this

El volcanismo jurásico superior de la Formación Río Damas-Tordillo (33°-35,5°S) : antecedentes su sobre petrogénesis, cronología, proveniencia e implicancias tectónicas. / Rossel, Pablo; Oliveros, Verónica; Mescua, José; Tapia, Felipe; Ducea, Mihai N; Calderón, Sergio; Charrier, Reynaldo; Hoffman, Derek.

In: Andean Geology, Vol. 41, No. 3, 01.09.2014, p. 529-557.

Research output: Contribution to journalArticle

Rossel, Pablo ; Oliveros, Verónica ; Mescua, José ; Tapia, Felipe ; Ducea, Mihai N ; Calderón, Sergio ; Charrier, Reynaldo ; Hoffman, Derek. / El volcanismo jurásico superior de la Formación Río Damas-Tordillo (33°-35,5°S) : antecedentes su sobre petrogénesis, cronología, proveniencia e implicancias tectónicas. In: Andean Geology. 2014 ; Vol. 41, No. 3. pp. 529-557.
@article{0ccf759ad26f4d7591b3959d5d267bc1,
title = "El volcanismo jur{\'a}sico superior de la Formaci{\'o}n R{\'i}o Damas-Tordillo (33°-35,5°S): antecedentes su sobre petrog{\'e}nesis, cronolog{\'i}a, proveniencia e implicancias tect{\'o}nicas",
abstract = "The uppermost Jurassic continental and volcanic deposits of the R{\'i}o Damas-Tordillo Formation represent an interval of intense continental deposition within the Jurassic to Early Cretaceous dominantly marine environment of the Mendoza-Neuqu{\'e}n back-arc basin. Stratigraphic and geochronological data indicate that progressive emersion of the arc and forearc domain, disconnecting the back-arc region from the Pacific Ocean, occurred during occurred during the Late Jurassic and probably the Early Cretaceous (~160-140 Ma). This change in the margin configuration induced a marine regression and the subsequent deposition of continental material in the back-arc basin. The most likely source of the sediments would have been the Jurassic arc, located west of the back-arc basin. The maximum depositional age of 146.4±4.4 Ma obtained from a red sandstone immediately below volcanic rocks confirms recent Tithonian maximum depositional ages assigned to the R{\'i}o Damas-Tordillo Formation, and suggests that the volcanic rocks, overlain by marine fossiliferous Tithoninan-Hauterivian sequences, should have erupted within a short time span during the Late Jurassic. Volcanism was probably facilitated by the presence of extensional structures related to the formation of the back-arc basin. Elemental and isotopic data, along with forward AFC models, suggest a depleted sub-arc asthenospheric mantle source for the volcanic rocks and the fractionation of olivine and plagioclase, along with small volumes of lower crust assimilation, as the main processes involved in the magmatic evolution. It is not possible to establish a different source and petrogenetic conditions for the R{\'i}o Damas-Tordillo Formation and the magmatism in the arc domain located further west, at the present-day Coastal Cordillera.",
keywords = "Central Chile, Detrital zircons, Isotopes, Jurassic, Volcanism",
author = "Pablo Rossel and Ver{\'o}nica Oliveros and Jos{\'e} Mescua and Felipe Tapia and Ducea, {Mihai N} and Sergio Calder{\'o}n and Reynaldo Charrier and Derek Hoffman",
year = "2014",
month = "9",
day = "1",
doi = "10.5027/andgeoV41n3-a03",
language = "Spanish",
volume = "41",
pages = "529--557",
journal = "Andean Geology",
issn = "0718-7092",
publisher = "Servicio Nacional de Geologia y Mineria",
number = "3",

}

TY - JOUR

T1 - El volcanismo jurásico superior de la Formación Río Damas-Tordillo (33°-35,5°S)

T2 - antecedentes su sobre petrogénesis, cronología, proveniencia e implicancias tectónicas

AU - Rossel, Pablo

AU - Oliveros, Verónica

AU - Mescua, José

AU - Tapia, Felipe

AU - Ducea, Mihai N

AU - Calderón, Sergio

AU - Charrier, Reynaldo

AU - Hoffman, Derek

PY - 2014/9/1

Y1 - 2014/9/1

N2 - The uppermost Jurassic continental and volcanic deposits of the Río Damas-Tordillo Formation represent an interval of intense continental deposition within the Jurassic to Early Cretaceous dominantly marine environment of the Mendoza-Neuquén back-arc basin. Stratigraphic and geochronological data indicate that progressive emersion of the arc and forearc domain, disconnecting the back-arc region from the Pacific Ocean, occurred during occurred during the Late Jurassic and probably the Early Cretaceous (~160-140 Ma). This change in the margin configuration induced a marine regression and the subsequent deposition of continental material in the back-arc basin. The most likely source of the sediments would have been the Jurassic arc, located west of the back-arc basin. The maximum depositional age of 146.4±4.4 Ma obtained from a red sandstone immediately below volcanic rocks confirms recent Tithonian maximum depositional ages assigned to the Río Damas-Tordillo Formation, and suggests that the volcanic rocks, overlain by marine fossiliferous Tithoninan-Hauterivian sequences, should have erupted within a short time span during the Late Jurassic. Volcanism was probably facilitated by the presence of extensional structures related to the formation of the back-arc basin. Elemental and isotopic data, along with forward AFC models, suggest a depleted sub-arc asthenospheric mantle source for the volcanic rocks and the fractionation of olivine and plagioclase, along with small volumes of lower crust assimilation, as the main processes involved in the magmatic evolution. It is not possible to establish a different source and petrogenetic conditions for the Río Damas-Tordillo Formation and the magmatism in the arc domain located further west, at the present-day Coastal Cordillera.

AB - The uppermost Jurassic continental and volcanic deposits of the Río Damas-Tordillo Formation represent an interval of intense continental deposition within the Jurassic to Early Cretaceous dominantly marine environment of the Mendoza-Neuquén back-arc basin. Stratigraphic and geochronological data indicate that progressive emersion of the arc and forearc domain, disconnecting the back-arc region from the Pacific Ocean, occurred during occurred during the Late Jurassic and probably the Early Cretaceous (~160-140 Ma). This change in the margin configuration induced a marine regression and the subsequent deposition of continental material in the back-arc basin. The most likely source of the sediments would have been the Jurassic arc, located west of the back-arc basin. The maximum depositional age of 146.4±4.4 Ma obtained from a red sandstone immediately below volcanic rocks confirms recent Tithonian maximum depositional ages assigned to the Río Damas-Tordillo Formation, and suggests that the volcanic rocks, overlain by marine fossiliferous Tithoninan-Hauterivian sequences, should have erupted within a short time span during the Late Jurassic. Volcanism was probably facilitated by the presence of extensional structures related to the formation of the back-arc basin. Elemental and isotopic data, along with forward AFC models, suggest a depleted sub-arc asthenospheric mantle source for the volcanic rocks and the fractionation of olivine and plagioclase, along with small volumes of lower crust assimilation, as the main processes involved in the magmatic evolution. It is not possible to establish a different source and petrogenetic conditions for the Río Damas-Tordillo Formation and the magmatism in the arc domain located further west, at the present-day Coastal Cordillera.

KW - Central Chile

KW - Detrital zircons

KW - Isotopes

KW - Jurassic

KW - Volcanism

UR - http://www.scopus.com/inward/record.url?scp=84908550876&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84908550876&partnerID=8YFLogxK

U2 - 10.5027/andgeoV41n3-a03

DO - 10.5027/andgeoV41n3-a03

M3 - Article

AN - SCOPUS:84908550876

VL - 41

SP - 529

EP - 557

JO - Andean Geology

JF - Andean Geology

SN - 0718-7092

IS - 3

ER -