Mid-early late Albian foraminiferal assemblage from the El Abra Formation in the El Madroño locality, eastern Valles-San Luis Potosí Platform, Mexico: Paleoenvironmental and paleobiogeographical significance

Abstract: Albian-Cenomanian carbonate deposits of the El Abra Formation are widely distributed in the folded Sierra Madre Oriental. At the El Madroño locality, this stratigraphic unit contains an abundant, diverse and well-preserved fossil association composed of foraminifers and algae as well as rudists and other kinds of bivalves, gastropods, as well as corals, echinoids, and sponges. The El Madroño site is located in the NE extreme of the state of Querétaro in central-eastern Mexico. The foraminiferal assemblage is well-preserved and consists mostly of orbitolinids: Dictyoconus walnutensis (Carsey, 1926), Paracoskinolina sunnilandensis (Maync, 1955b), Coskinolinoides texanus (Keijzer, 1942), as well as Buccicrenata subgoodlandensis (Vanderpool, 1933), Novalesia angulosa (Magniez, 1972), Mayncina sp., Istriloculina sp., Arenobulimina sp., Buccicrenata sp. and r strategist planktic foraminifers such as Favusella washitensis (Carsey, 1926), Murico hedbergella simplex (Morrow, 1934), and M. albiana (BouDagher-Fadel, et al. , 1996). Among the calcareous algae are Cayeuxia kurdistanensis Elliott, 1957, Terquemella americana (Konishi and Epis, 1962), Acroporella sp., Triploporella sp., and the encruster Lithocodium aggregatum Elliott, 1956. The age assignment of the deposit is based on the benthic foraminifer Dictyoconus walnutensis , which is considered a regional marker of middle Albian age, however this succession spans to the early Albian. The paleoenvironmental reconstruction, inferred from the lithology and benthic assemblage, suggests a warm shallow-water platform.

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Main Authors: Omaña,Lourdes, Alencaster,Gloria, Buitrón,Blanca Estela
Format: Digital revista
Language:English
Published: Sociedad Geológica Mexicana A.C. 2016
Online Access:http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-33222016000300477
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spelling oai:scielo:S1405-332220160003004772017-09-01Mid-early late Albian foraminiferal assemblage from the El Abra Formation in the El Madroño locality, eastern Valles-San Luis Potosí Platform, Mexico: Paleoenvironmental and paleobiogeographical significanceOmaña,LourdesAlencaster,GloriaBuitrón,Blanca Estela Albian foraminiferal assemblage El Madroño Valles-San Luis Potosí Platform Mexico Abstract: Albian-Cenomanian carbonate deposits of the El Abra Formation are widely distributed in the folded Sierra Madre Oriental. At the El Madroño locality, this stratigraphic unit contains an abundant, diverse and well-preserved fossil association composed of foraminifers and algae as well as rudists and other kinds of bivalves, gastropods, as well as corals, echinoids, and sponges. The El Madroño site is located in the NE extreme of the state of Querétaro in central-eastern Mexico. The foraminiferal assemblage is well-preserved and consists mostly of orbitolinids: Dictyoconus walnutensis (Carsey, 1926), Paracoskinolina sunnilandensis (Maync, 1955b), Coskinolinoides texanus (Keijzer, 1942), as well as Buccicrenata subgoodlandensis (Vanderpool, 1933), Novalesia angulosa (Magniez, 1972), Mayncina sp., Istriloculina sp., Arenobulimina sp., Buccicrenata sp. and r strategist planktic foraminifers such as Favusella washitensis (Carsey, 1926), Murico hedbergella simplex (Morrow, 1934), and M. albiana (BouDagher-Fadel, et al. , 1996). Among the calcareous algae are Cayeuxia kurdistanensis Elliott, 1957, Terquemella americana (Konishi and Epis, 1962), Acroporella sp., Triploporella sp., and the encruster Lithocodium aggregatum Elliott, 1956. The age assignment of the deposit is based on the benthic foraminifer Dictyoconus walnutensis , which is considered a regional marker of middle Albian age, however this succession spans to the early Albian. The paleoenvironmental reconstruction, inferred from the lithology and benthic assemblage, suggests a warm shallow-water platform.info:eu-repo/semantics/openAccessSociedad Geológica Mexicana A.C.Boletín de la Sociedad Geológica Mexicana v.68 n.3 20162016-12-01info:eu-repo/semantics/articletext/htmlhttp://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-33222016000300477en
institution SCIELO
collection OJS
country México
countrycode MX
component Revista
access En linea
databasecode rev-scielo-mx
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region America del Norte
libraryname SciELO
language English
format Digital
author Omaña,Lourdes
Alencaster,Gloria
Buitrón,Blanca Estela
spellingShingle Omaña,Lourdes
Alencaster,Gloria
Buitrón,Blanca Estela
Mid-early late Albian foraminiferal assemblage from the El Abra Formation in the El Madroño locality, eastern Valles-San Luis Potosí Platform, Mexico: Paleoenvironmental and paleobiogeographical significance
author_facet Omaña,Lourdes
Alencaster,Gloria
Buitrón,Blanca Estela
author_sort Omaña,Lourdes
title Mid-early late Albian foraminiferal assemblage from the El Abra Formation in the El Madroño locality, eastern Valles-San Luis Potosí Platform, Mexico: Paleoenvironmental and paleobiogeographical significance
title_short Mid-early late Albian foraminiferal assemblage from the El Abra Formation in the El Madroño locality, eastern Valles-San Luis Potosí Platform, Mexico: Paleoenvironmental and paleobiogeographical significance
title_full Mid-early late Albian foraminiferal assemblage from the El Abra Formation in the El Madroño locality, eastern Valles-San Luis Potosí Platform, Mexico: Paleoenvironmental and paleobiogeographical significance
title_fullStr Mid-early late Albian foraminiferal assemblage from the El Abra Formation in the El Madroño locality, eastern Valles-San Luis Potosí Platform, Mexico: Paleoenvironmental and paleobiogeographical significance
title_full_unstemmed Mid-early late Albian foraminiferal assemblage from the El Abra Formation in the El Madroño locality, eastern Valles-San Luis Potosí Platform, Mexico: Paleoenvironmental and paleobiogeographical significance
title_sort mid-early late albian foraminiferal assemblage from the el abra formation in the el madroño locality, eastern valles-san luis potosí platform, mexico: paleoenvironmental and paleobiogeographical significance
description Abstract: Albian-Cenomanian carbonate deposits of the El Abra Formation are widely distributed in the folded Sierra Madre Oriental. At the El Madroño locality, this stratigraphic unit contains an abundant, diverse and well-preserved fossil association composed of foraminifers and algae as well as rudists and other kinds of bivalves, gastropods, as well as corals, echinoids, and sponges. The El Madroño site is located in the NE extreme of the state of Querétaro in central-eastern Mexico. The foraminiferal assemblage is well-preserved and consists mostly of orbitolinids: Dictyoconus walnutensis (Carsey, 1926), Paracoskinolina sunnilandensis (Maync, 1955b), Coskinolinoides texanus (Keijzer, 1942), as well as Buccicrenata subgoodlandensis (Vanderpool, 1933), Novalesia angulosa (Magniez, 1972), Mayncina sp., Istriloculina sp., Arenobulimina sp., Buccicrenata sp. and r strategist planktic foraminifers such as Favusella washitensis (Carsey, 1926), Murico hedbergella simplex (Morrow, 1934), and M. albiana (BouDagher-Fadel, et al. , 1996). Among the calcareous algae are Cayeuxia kurdistanensis Elliott, 1957, Terquemella americana (Konishi and Epis, 1962), Acroporella sp., Triploporella sp., and the encruster Lithocodium aggregatum Elliott, 1956. The age assignment of the deposit is based on the benthic foraminifer Dictyoconus walnutensis , which is considered a regional marker of middle Albian age, however this succession spans to the early Albian. The paleoenvironmental reconstruction, inferred from the lithology and benthic assemblage, suggests a warm shallow-water platform.
publisher Sociedad Geológica Mexicana A.C.
publishDate 2016
url http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-33222016000300477
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