Sedimentation environment of the Cojimar Formation (Havana province) based on benthic foraminifera
Cojímar Formation, —Lower Miocene (upper part) to Middle Miocene (lower part)—, is a unit in Western Cuba well known for its extensive development and exposure outcrops. It has been widely used in bioestratigraphic studies. However, paleoecological studies on this unit through foraminifera, both pla...
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Universidad de Moa "Dr. Antonio Núñez Jiménez"
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ftdoajarticles:oai:doaj.org/article:35c7f311f1094b19807368351581a9e4 2023-07-30T04:06:24+02:00 Sedimentation environment of the Cojimar Formation (Havana province) based on benthic foraminifera Yaima Domínguez-Samalea Lourdes María Pérez-Estrada Reinaldo Rojas-Consuegra 2022-01-01T00:00:00Z https://doaj.org/article/35c7f311f1094b19807368351581a9e4 ES spa Universidad de Moa "Dr. Antonio Núñez Jiménez" http://revista.ismm.edu.cu/index.php/revistamg/article/view/2028 https://doaj.org/toc/1993-8012 1993-8012 https://doaj.org/article/35c7f311f1094b19807368351581a9e4 Minería y Geología, Vol 37, Iss 4, Pp 376-396 (2022) paleoecología foraminíferos mioceno formación cojímar cuba Mining engineering. Metallurgy TN1-997 Geology QE1-996.5 Mineralogy QE351-399.2 article 2022 ftdoajarticles 2023-07-09T00:37:02Z Cojímar Formation, —Lower Miocene (upper part) to Middle Miocene (lower part)—, is a unit in Western Cuba well known for its extensive development and exposure outcrops. It has been widely used in bioestratigraphic studies. However, paleoecological studies on this unit through foraminifera, both planktonic and benthic species, are considered insufficient. The richness and variety of microfossils, especially foraminifera, has allowed us to address the paleoecological aspect. In this paper, the sedimentary environment is established. Besides the systematic classification of these species was updated and the biozonation re-evaluated from planktonic foraminifera. A detailed sampling, from material taken every 15 meters was fulfilled along with a compilation of all species of foraminifera reported for the studied unit. The micropalaeontological analysis allowed the identification of 40 taxa of planktonic foraminifera grouped into 12 genera, being the most representative Globigerina, Globigerinoides, Orbulina, and Globorotalia. Moreover, 226 taxa of benthic foraminifera belonging to 102 genera were determined. These included: Lituolida, Loftusiida, Textulariida, Lagenida, Rotaliida and Miliolida suborders. The main genres represented were Cibicides, Cibicidoides, Cibicobis, Uvigerina, Angulogerina, Anomalinoides, Planulina, Bolivina, Amphistegina, Lenticulina, Nodosaria, and Textularia. Cojímar Formation corresponds to a deep platform, which was determined from the benthic microforaminifera (Uvigerina, Lenticulina, Marginulina) analyzed. Thanatocenoses developed in outer neritic to upper bathyal depths between 100 m - 500m. New reports of both planktonic foraminifera species for that unit as small benthic, such as Anomalinoides flintii, A. trinitatensis, Planulina valued cf. P. mantaensis, Catapsydrax cf. C. dissimilis, Globigerinoides cf. G. obliquus, Globigerinoides primordius, and Hastigerina praesiphonifera were evaluated. As a contribution Gyroidinoides cibaoensis taxon is here first reported to Cuba. Article in Journal/Newspaper Planktonic foraminifera Directory of Open Access Journals: DOAJ Articles |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Spanish |
topic |
paleoecología foraminíferos mioceno formación cojímar cuba Mining engineering. Metallurgy TN1-997 Geology QE1-996.5 Mineralogy QE351-399.2 |
spellingShingle |
paleoecología foraminíferos mioceno formación cojímar cuba Mining engineering. Metallurgy TN1-997 Geology QE1-996.5 Mineralogy QE351-399.2 Yaima Domínguez-Samalea Lourdes María Pérez-Estrada Reinaldo Rojas-Consuegra Sedimentation environment of the Cojimar Formation (Havana province) based on benthic foraminifera |
topic_facet |
paleoecología foraminíferos mioceno formación cojímar cuba Mining engineering. Metallurgy TN1-997 Geology QE1-996.5 Mineralogy QE351-399.2 |
description |
Cojímar Formation, —Lower Miocene (upper part) to Middle Miocene (lower part)—, is a unit in Western Cuba well known for its extensive development and exposure outcrops. It has been widely used in bioestratigraphic studies. However, paleoecological studies on this unit through foraminifera, both planktonic and benthic species, are considered insufficient. The richness and variety of microfossils, especially foraminifera, has allowed us to address the paleoecological aspect. In this paper, the sedimentary environment is established. Besides the systematic classification of these species was updated and the biozonation re-evaluated from planktonic foraminifera. A detailed sampling, from material taken every 15 meters was fulfilled along with a compilation of all species of foraminifera reported for the studied unit. The micropalaeontological analysis allowed the identification of 40 taxa of planktonic foraminifera grouped into 12 genera, being the most representative Globigerina, Globigerinoides, Orbulina, and Globorotalia. Moreover, 226 taxa of benthic foraminifera belonging to 102 genera were determined. These included: Lituolida, Loftusiida, Textulariida, Lagenida, Rotaliida and Miliolida suborders. The main genres represented were Cibicides, Cibicidoides, Cibicobis, Uvigerina, Angulogerina, Anomalinoides, Planulina, Bolivina, Amphistegina, Lenticulina, Nodosaria, and Textularia. Cojímar Formation corresponds to a deep platform, which was determined from the benthic microforaminifera (Uvigerina, Lenticulina, Marginulina) analyzed. Thanatocenoses developed in outer neritic to upper bathyal depths between 100 m - 500m. New reports of both planktonic foraminifera species for that unit as small benthic, such as Anomalinoides flintii, A. trinitatensis, Planulina valued cf. P. mantaensis, Catapsydrax cf. C. dissimilis, Globigerinoides cf. G. obliquus, Globigerinoides primordius, and Hastigerina praesiphonifera were evaluated. As a contribution Gyroidinoides cibaoensis taxon is here first reported to Cuba. |
format |
Article in Journal/Newspaper |
author |
Yaima Domínguez-Samalea Lourdes María Pérez-Estrada Reinaldo Rojas-Consuegra |
author_facet |
Yaima Domínguez-Samalea Lourdes María Pérez-Estrada Reinaldo Rojas-Consuegra |
author_sort |
Yaima Domínguez-Samalea |
title |
Sedimentation environment of the Cojimar Formation (Havana province) based on benthic foraminifera |
title_short |
Sedimentation environment of the Cojimar Formation (Havana province) based on benthic foraminifera |
title_full |
Sedimentation environment of the Cojimar Formation (Havana province) based on benthic foraminifera |
title_fullStr |
Sedimentation environment of the Cojimar Formation (Havana province) based on benthic foraminifera |
title_full_unstemmed |
Sedimentation environment of the Cojimar Formation (Havana province) based on benthic foraminifera |
title_sort |
sedimentation environment of the cojimar formation (havana province) based on benthic foraminifera |
publisher |
Universidad de Moa "Dr. Antonio Núñez Jiménez" |
publishDate |
2022 |
url |
https://doaj.org/article/35c7f311f1094b19807368351581a9e4 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Minería y Geología, Vol 37, Iss 4, Pp 376-396 (2022) |
op_relation |
http://revista.ismm.edu.cu/index.php/revistamg/article/view/2028 https://doaj.org/toc/1993-8012 1993-8012 https://doaj.org/article/35c7f311f1094b19807368351581a9e4 |
_version_ |
1772818978757935104 |