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Paleoenvironmental distribution of larger Foraminifera in Upper Cretaceous siliciclastic-carbonate deposits (Aren Sandstone Formation, south Pyrenees, northeastern Spain)

Raquel Robles-Salcedo, Gonzalo Rivas, Vicent Vicedo and Esmeralda Caus
Paleoenvironmental distribution of larger Foraminifera in Upper Cretaceous siliciclastic-carbonate deposits (Aren Sandstone Formation, south Pyrenees, northeastern Spain)
Palaios (September 2013) 28 (9): 637-648

Abstract

This study examines the distribution of larger foraminifera in an upper Campanian-lower Maastrichtian siliciclastic-carbonate depositional environment within the Aren Sandstone Formation. Three assemblages have been identified, which refer to prodelta, reef, and lagoon depositional facies. Prodelta deposits are characterized by Lepidorbitoides socialis, Lepidorbitoides aff. minor, Clypeorbis mammillata, and Siderolites cataluniensis. The reef deposit assemblage contains Siderolites calcitrapoides, Siderolites cataluniensis, Orbitoides gruenbachensis, "Orbitoides" aff. concavatus, Lepidorbitoides aff. minor, and Fallotia jacquoti. They are associated with the encrusting foraminifera Solenomeris and HADDONIA: The lagoonal assemblage contains Fascispira colomi and Omphalocyclus macroporus. Among the siderolitids, the keeled saucer-shaped Siderolites cataluniensis colonized the deepest environments at the lower photic zone, whereas the canaliculate spine-bearing Siderolites calcitrapoides characterized shallower waters. The former lived on soft media of calm environments whereas the latter crawled on firmground of high-energy environments. Lepidorbitoides socialis shared with Siderolites cataluniensis and Clypeorbis mammillata the deepest, calm environments, while Lepidoritoides aff. minor adapted to a wide range of depths in low to moderate water-energy environments. Orbitoides gruenbachensis and "Orbitoides" aff. concavatus colonized the firm media in the upper photic zone, whereas Omphalocyclus macroporus was an epiphyte in soft media in areas with a moderate-energy water. The meandropsinids occupied the upper photic zone; the odd pair Fallotia jacquoti and Eofallotia simplex colonized high-energy environments, whereas their relative Fascispira colomi adapted to shallow, calm environments. The structure of the assemblages of larger foraminifera described in this paper provides a useful tool for the reconstruction of the Late Cretaceous shallow-water fauna in mixed siliciclastic-carbonate environments.


ISSN: 0883-1351
Serial Title: Palaios
Serial Volume: 28
Serial Issue: 9
Title: Paleoenvironmental distribution of larger Foraminifera in Upper Cretaceous siliciclastic-carbonate deposits (Aren Sandstone Formation, south Pyrenees, northeastern Spain)
Affiliation: Universitat Autonoma de Barcelona, Departament de Geologia, Barcelona, Spain
Pages: 637-648
Published: 201309
Text Language: English
Publisher: Society for Sedimentary Geology, Tulsa, OK, United States
References: 74
Accession Number: 2014-012999
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., strat. cols., 1 table, geol. sketch maps
N42°10'00" - N42°10'00", E00°54'00" - E00°54'00"
Secondary Affiliation: Institut Geologic de Catalunya, ESP, SpainMuseu de Ciencies Naturals de Barcelona, ESP, Spain
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by SEPM (Society for Sedimentary Geology), Tulsa, OK, United States
Update Code: 201409
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