Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/160583
Title: Late Chattian platform carbonates with benthic foraminifera and coralline algae from the SE Iberian plate
Author: Bover-Arnal, Telm
Ferràndez-Cañadell, C
Aguirre, J.
Esteban, M
Fernández-Carmona, J.
Albert Villanueva, Eduard
Salas, Ramon (Salas Roig)
Keywords: Algues fòssils
Foraminífers fòssils
Miocè
Fossil algae
Fossil foraminifera
Miocene
Issue Date: 1-Jan-2017
Publisher: Society of Economic Paleontologists and Mineralogists.
Abstract: The carbonate system studied represents an under-investigated sedimentary record formed in the western end of the Tethys during the Chattian relatively warm climate regime. These platform carbonates are examined with respect to rock fabrics, biostratigraphy, biostratinomy, paleoecology, and sequence stratigraphy. Dominant carbonate producers include scleractinian corals and echinoids, but the most prolific were symbiontbearing benthic foraminifera and coralline algae. The presence of Miogypsinoides complanatus and Miogypsinoides formosensis indicates a late Chattian age (Shallow Benthic Zone 23). The depositional profile is consistent with a homoclinal ramp. The absence of a barrier margin and thus, of a lagoon, facilitated the transport and re-working of biogenic components throughout the platform. As a result, facies are rather homogeneous corresponding to a rudstone mainly formed by benthic foraminifera and coralline algae, which passes basinwards to deeper ramp to hemipelagic deposits rich in echinoids and planktonic foraminifera. Within this dominant facies, only subtle and gradual lateral variations on the relative abundance or absence of certain skeletal components or species are recognized, comprising two end members. A proximal biofacies of benthic foraminifera and coralline algae including corals in growth position, fragments of green algae, and seagrass dwellers where Eulepidina, Nummulites, and Operculina are absent, and a distal biofacies where corals, green algae, and seagrass dwellers are not present, but Eulepidina, Nummulites and Operculina are common. Carbonate deposition was controlled by long-term relative sea-level fluctuations including a Rupelian?-late Chattian transgression, a late Chattian regression, which ended in subaerial exposure of proximal ramp carbonates, and a latest Chattian to early Miocene transgression. The Chattian carbonate platform was finally drowned around the Oligocene/Miocene transition.
Note: Versió postprint del document publicat a: https://doi.org/10.2110/palo.2016.007
It is part of: Palaios, 2017, vol. 32, num. 1, p. 61-82
URI: http://hdl.handle.net/2445/160583
Related resource: https://doi.org/10.2110/palo.2016.007
ISSN: 0883-1351
Appears in Collections:Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)

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