Introducing the clastic-carbonate and red clastic sediments of Maastrichtian in High Zagros region (Semirom-Ardal)

Vaziry, Hossin; Safari, Amrollah; Shahriari, Samira; Taheri, Azizollah; Khazaei, Ahmad Reza

Introducing the clastic-carbonate and red clastic sediments of Maastrichtian in High Zagros region (Semirom-Ardal)

Authors

hossin Vaziry

amrollah Safari

Samira Shahriari

azizollah Taheri

Ahmad reza khazaei

Abstract

In this research 2 new lithostratigraphic units based on studying of 8 stratigraphic sections which outcrops with a considerable thickness in high Zagros (Semirom-Ardal) is introduced. The clastic-carbonate sediments (unit stratigraphic 1) is 314 m in thickness at its type section (station 7). The lower contact of this unit is conformable with the underlying Amiran Formation but its upper contact is unconformable with the red colore clastic sediments (unit stratigraphic 2).The red colore clastic sediments (unit stratigraphic 2) is 220 m in thickness at its type section(station 5). The lithostratigraphic 2 overlies the clastic-carbonate sediments (unit stratigraphic 1) or Gurpi Formation by an unconformity boundary but its upper contact is conformable with the Tarbur Formation. The type sections of both lithostratigraphic units are selected according to the maximum thickness and completed successions in Semirom area (stations 7 and 5, respectively).

Keywords

Clastic-carbonate sediments

lithostratigraphic

Maastrichtian

Red colore clastic sediments

Semirom