Lower Aptian shallow-water benthic foraminiferal assemblage from the Chilacachapa range in the Guerrero-Morelos Platform, south Mexico
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad Nacional Autónoma de México
2009
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| _version_ | 1876446471805468672 |
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| author | Lourdes Omaña |
| author_facet | Lourdes Omaña |
| contents | Lower Aptian shallow-water benthic foraminiferal assemblage from the Chilacachapa range in the Guerrero-Morelos Platform, south Mexico Lourdes Omaña Gloria Alencáster Ciencias de la Tierra Mexico shallow Guerrero Tethys realm early Aptian Lower Cretaceous shallow-water benthic foraminifera were recovered from the lower part of a limestone sequence that crops out in the Chilacachapa range in the Guerrero-Morelos Platform paleogeographic unit in southern Mexico. The benthic foraminiferal association consists of Palorbitolina lenticularis, Choffatella cf. decipiens, Melathrokerion valserinensis, Glomospira urgoniana, Istriloculina eliptica, Pseudocyclammina sp., Ammovertellina sp., and Lenticulina sp. This association is documented here for the first time in the study area and Melathrokerion valserinensis for the first time in Mexico. An early Aptian age was assigned to the sequence on the basis of the size of the embryonic chamber and test characters of Palorbitolina lenticularis. The observed lithology and foraminiferal faunas suggest a warm shallow-water platform environment. The benthic foraminiferal assemblage is considered typical of the Tethys realm, corresponding to the Barremian-Aptian boundary platform expansion, as the same benthic foraminifera are present at many localities in the Old and New World. 2009 artículo científico 1026-8774 https://www.redalyc.org/articulo.oa?id=57214953003 en http://www.redalyc.org/revista.oa?id=572 Revista Mexicana de Ciencias Geológicas application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Ciencias Geológicas (México) Num.3 Vol.26 |
| format | Artículo científico |
| id | redalyc_57214953003 |
| institution | Redalyc |
| language | en |
| publishDate | 2009 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Lower Aptian shallow-water benthic foraminiferal assemblage from the Chilacachapa range in the Guerrero-Morelos Platform, south Mexico Lourdes Omaña Ciencias de la Tierra Mexico shallow Guerrero Tethys realm early Aptian Lower Aptian shallow-water benthic foraminiferal assemblage from the Chilacachapa range in the Guerrero-Morelos Platform, south Mexico Lourdes Omaña Gloria Alencáster Ciencias de la Tierra Mexico shallow Guerrero Tethys realm early Aptian Lower Cretaceous shallow-water benthic foraminifera were recovered from the lower part of a limestone sequence that crops out in the Chilacachapa range in the Guerrero-Morelos Platform paleogeographic unit in southern Mexico. The benthic foraminiferal association consists of Palorbitolina lenticularis, Choffatella cf. decipiens, Melathrokerion valserinensis, Glomospira urgoniana, Istriloculina eliptica, Pseudocyclammina sp., Ammovertellina sp., and Lenticulina sp. This association is documented here for the first time in the study area and Melathrokerion valserinensis for the first time in Mexico. An early Aptian age was assigned to the sequence on the basis of the size of the embryonic chamber and test characters of Palorbitolina lenticularis. The observed lithology and foraminiferal faunas suggest a warm shallow-water platform environment. The benthic foraminiferal assemblage is considered typical of the Tethys realm, corresponding to the Barremian-Aptian boundary platform expansion, as the same benthic foraminifera are present at many localities in the Old and New World. 2009 artículo científico 1026-8774 https://www.redalyc.org/articulo.oa?id=57214953003 en http://www.redalyc.org/revista.oa?id=572 Revista Mexicana de Ciencias Geológicas application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Ciencias Geológicas (México) Num.3 Vol.26 |
| title | Lower Aptian shallow-water benthic foraminiferal assemblage from the Chilacachapa range in the Guerrero-Morelos Platform, south Mexico |
| topic | Ciencias de la Tierra Mexico shallow Guerrero Tethys realm early Aptian |
| url | https://www.redalyc.org/articulo.oa?id=57214953003 |