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Titolo:
Oligocene and Early Miocene coral faunas from Iran: palaeoecology and palaeobiogeography
Autore:
Schuster, F; Wielandt, U;
Indirizzi:
Forschungsinst Senckenberg, D-60325 Frankfurt, Germany Forschungsinst Senckenberg Frankfurt Germany D-60325 Frankfurt, Germany Univ Tubingen, Inst & Museum Geol & Palaontol, D-72076 Tubingen, Germany Univ Tubingen Tubingen Germany D-72076 aontol, D-72076 Tubingen, Germany
Titolo Testata:
INTERNATIONAL JOURNAL OF EARTH SCIENCES
fascicolo: 3, volume: 88, anno: 1999,
pagine: 571 - 581
SICI:
1437-3254(199910)88:3<571:OAEMCF>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Keywords:
Oligocene; early miocene; Iran; Qom formation; Tethyan Seaway; corals; larger foraminifera; palaeoecology; palaeobiogeography; palaeobathymetry;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Schuster, F Forschungsinst Senckenberg, Senckenberganlage 25, D-60325 Frankfurt, Germany Forschungsinst Senckenberg Senckenberganlage 25 Frankfurt Germany D-60325
Citazione:
F. Schuster e U. Wielandt, "Oligocene and Early Miocene coral faunas from Iran: palaeoecology and palaeobiogeography", INT J E SCI, 88(3), 1999, pp. 571-581

Abstract

Oligocene and Early Miocene coral assemblages from three sections of central Iran are investigated with respect to their palaeoecological and palaeobiogeographic implications. These corals are compared with faunas from the Mediterranean Tethys and the Indopacific. Associated larger foraminifers areused for biostratigraphy and to support the palaeoecological interpretation. The studied sections are situated in the foreland basins of the Iranian Plate which is structured into a fore-arc and a back-arc basin separated bya volcanic arc. The coral assemblages from Abadeh indicate a shallowing-upward trend. Infrequently distributed solitary corals at the base of the section indicate a turbid environment. Above, a distinct horizon characterisedby a Leptoseris-Stylophora assemblage associated with lepidocyclinids and planktonic foraminifers is interpreted as maximum flooding surface. Small patch reefs with a Porites-Faviidae assemblage are a common feature of Late Oligocene to Early Miocene coral occurrences and indicate water depths of less than 20 m. The diversity of the coral faunas shows marked differences. Oligocene corals from the Esfahan-Sirjan fore-arc basin comprise more than 45 species of 32 genera and occur in a wide range of environments. Early Miocene corals from the Qom back-arc basin are less frequent, show a lower diversity (13 genera with 15 species) and occur in single horizons or small patch reefs.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 16:59:23