Abstract
The Paleocene-Eocene successions were studied in Sekonj and Abaregh sections and located in South of Kerman in order to determine the microfacies, depositional environment and sequence stratigraphy. The deposits in the studied area are mainly composed of limestone, sandstone, conglomerate and shale. The obtained data from the field and laboratory observations led to identification of 11 microfacies which represent the coastal, tidal flat, lagoon, barrier and proximal open marine which were deposited in a carbonate-siliciclastic ramp environment. The sedimentology evidences, vertical analysis of microfacies, facies and relative sea level changes represent that the Paleocene-Eocene succession deposits have two 3rd depositional sequences in the studied area. The sequence 2 cannot be recognized completely due to the lack of outcrop. Sequence stratigraphic studies show an upward shallowing trend corresponding to the global sea level changes from the base to the upward of the succession.
Highlights
Due to the absence or very low diversity of bioclasts and cooperation with the shallow facies, the sub-environments of tidal flat is recommended for the microfacies [30]
The Palecene-Eocene succession is present in some part of the south of Kerman, due to erosion during the Laramide orogeny event but the basal part of Palecene-Eocene succession of Thanetian-Ypersian age in the sections, transgressively overlies the top of late Cretaceous and Kerman Conglomerate
Depositional environment and sequence stratigraphy studies of Palecene-Eocene successions in Sekonj sedimentary trough provided the following consequences: Identification of 11 microfacies in 5 facies belts including coastal, tidal flat, lagoon, barrier and proximal open marine environments which have been deposited in a carboanate-siliciclastic ramp
Summary
The Paleogene period begins in the most parts of Central Iran and the southern slopes of Alborz with the presence of post-orogenic clastic sediments and with the apparent angular unconformity, but a sedimentary trough was formed at the time of Laramide event and between Sekonj area and Shishtu mountain which predominantly is consists of fine-grained clastic sediments and shows the continuous marine conditions and the continuous, gradual transition of the Creta-. Laramide orogeny event (late Cretaceous-Paleogene) has an important role in geology of Iran and in the studied area. Few studies have been done in the recent years on the stratigraphy of Paleocene-Eocene carbonate sediments in Kerman areas by [4]-[10], but the Sekonj sedimentary trough is not considered. Facies, depositional environment and sequence stratigraphy of the Sekonj and Abaregh sections in Sekonj sedimentary trough will be analyzed
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