Devonian/Lower Carboniferous stratigraphy, facies patterns and palaeogeography of Iran. Part I. Southeastern Iran

Authors

  • Jobst Wendt Geologisch-Paläontologisches Institut der Universität, Sigwartstrasse 10, D-72076 Tübingen
  • Bernd Kaufmann Geologisch-Paläontologisches Institut der Universität, Sigwartstrasse 10, D-72076 Tübingen
  • Zdzisław Bełka Institut für Geologische Wissenschaften und Geiseltalmuseum, Domstrasse 5; D-06108 Halle (Saale)
  • Noor Farsan Geologisch-Paläontologisches Institut der Universität, Im Neuenheimer Feld 234, D-69120 Heidelberg
  • Alireza Karimi Bavandpur Geological Survey of Iran, Meraj Blvd., Azadi Sq., P.O. Box 13185-1494, Teheran

Keywords:

Iran, Devonian, Lower Carboniferous, Permian, Stratigraphy, Sedimentology, Facies patterns, Palaeogeography

Abstract

The mountains N of Kerman in southeastern Iran are a key region for Devonian/Lower Carboniferous stratigraphy of a still poorly known segment on the northern margin of Gondwana and display a great diversity of neritic depositional environments. The hitherto applied subdivision into lithostratigraphic formations has been calibrated by means of conodonts and brachiopods allowing good correlations of 36 sections, the majority of them ranging from the top of the Cambrian or the Silurian into the Lower Permian. Upper Cambrian sandstones or Silurian carbonates are unconformably overlain by red siliciclastics of uncertain Early to early Middle Devonian age (Padeha Formation) which in turn pass into skeletal limestones (upper Middle Devonian to Tournaisian Bahram and Sardar Formations). The latter are erosionally capped by Permian platform carbonates (Jamal Formation). Facies patterns during 5 intervals from the Silurian into the Tournaisian show evolution from a carbonate platform and a siliciclastic shelf during the Silurian and the Early Devonian into shallow open marine embayments during the late Middle and Late Devonian, and a carbonate platform during the Early Carboniferous. Sharp boundaries between Upper Devonian facies belts appear controlled by synsedimentaryepeirogenic movements which may have been active since the Early Palaeozoic.

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Published

2003-09-10

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Articles