TITLE:
Sedimentary Environments and Correlative Sequence Stratigraphy of Upper Cretaceous—Paleogene Succession in Shiraz Area, Fars, SW IRAN
AUTHORS:
Mirzaee Mahmoodabadi Reza
KEYWORDS:
Iran; Fars; Shiraz; Sedimentary Environment; Sequence Stratigraphy; Cretaceous-Tertiary Boundary
JOURNAL NAME:
Open Journal of Geology,
Vol.4 No.1,
January
17,
2014
ABSTRACT:
Sequence stratigraphic evidences have been used in this research to investigate the stratigraphic
correlation of cretaceous paleogene succession in Shiraz area, Fars, SW Iran.
For this purpose, 4 stratigraphic sections have been chosen and provided.
According to petrographic study and field evidences, 4 depositional sequences
were identified including the
Tarbur, Sachun and Jahrum formations in the east and the Gurpi, Pabadeh and
Asmari formations in the west of study area. After identifying the boundaries
and systems tract facies, it has been found that the mentioned formations have
been deposited among the
continuous/discontinuous boundaries in an equivalent manner. In this case, the purple
shale (between the Gurpi and Pabdeh formations) could be considered equivalent to the upper part of the Sachun formation. From
the point of Paleogeography, the plat-form sedimentary environment covered almost the whole area during
the Oligo-Miocene age, so that the Asmari formation would have been deposited, which is marked by sharp contact as disconformity on Jahrum formation in the east of
the basin and with continuous contact (C.C) on the Pabdeh formation in the west
and southwest.