Jahanbakhsh Daneshian Articles List

List of Articles Jahanbakhsh Daneshian

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1 - Microfacies, Sedimentary Environment and Sequence Stratigraphy of the Qom Formation, Deh Namak, Northwest of Garmsar
Jahanbakhsh Daneshian Asadi Mehmandosti yousef ramezani

Deh Namak section is exposed along the most northern point of the Qom Formation, where the Central Iran zone and Alborz zone come together. The study of microfacies, sedimentary environments and sequence stratigraphic features of the Qom Formation in this area can h More

Deh Namak section is exposed along the most northern point of the Qom Formation, where the Central Iran zone and Alborz zone come together. The study of microfacies, sedimentary environments and sequence stratigraphic features of the Qom Formation in this area can help to understand the situation of the Qom sedimentary basin in the northern part, bordering the Alborz zone. 166 samples of the Qom Formation in Deh Namak section in the northwest of Garmsar are investigated. Microfacies analysis of these sedimentary rocks indicates that according to sedimentary environment they consist of nine microfacies belonging to four facies belts including tidal flat, agoon, shoal/reef sediments and slope of platform. Due to the absence of the gravitational and turbidity sediments and abundance of reef/shoal sediments, a rimmed carbonate shelf depositional environment is suggested in which more sediments were precipitated in shallow water. In this model, deep facies of the basin did not spread and the deepest facies belong to the slope. Also, sequence stratigraphic studies show that the Deh Namak section is composed of four sedimentary sequences of third- order, two types II and one type I sequence boundaries were recognized in this formation. Manuscript profile
Open Access Article
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2 - Sequence Stratigraphy of Oligo-Miocene deposits at Ahmadi anticline, southeast of Shiraz
Jahanbakhsh Daneshian Mohsen Yaghoobi Alireza Tahmasbi Sarvestani

The sequence stratigraphic studies can be of great help in understanding and analysis of sedimentary basins. For this purpose, Oligo-Miocene sediments (Razak and Asmari formations) at the Tang-e-Abdi section (southern flank of Ahmadi anticline) located in Fars province More

The sequence stratigraphic studies can be of great help in understanding and analysis of sedimentary basins. For this purpose, Oligo-Miocene sediments (Razak and Asmari formations) at the Tang-e-Abdi section (southern flank of Ahmadi anticline) located in Fars province was selected and investigated. The Asmari Formation overlies paraconformably on the Jahrum Formation, and it is overlain by the Razak Formation. The lithologic column of this section includes a succession of the Jahrum (10m), Asmari (35m) and Razak (172.5m) formations, and consists mainly of limestone, argillaceous limestone, marl, sandstone, conglomerate, shale and dolomitic deposits. Totally, 84 samples were investigated, and their age is suggested as Late Eocene for the Jahrum Formation to Rupelian for the Asmari sediments, and Rupelian to Aquitanian for the Razak Formation based on the benthic foraminiferal stratigraphic distribution. The microfacies studies were led to recognition of four facies belts including tidal flat, lagoon, sand shoals and open marine. According to field & laboratory studies, four sequences and sequence boundaries were recognized. Two sequence boundaries are of type one and the other two are of type II sequence boundaries. Manuscript profile

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List of Articles Jahanbakhsh Daneshian