T Ahmadi; V Hairapetian; H Gholamalian; M.R Vaziri; M Dastanpour
Abstract
From Late Devonian-Early Carboniferous strata in the Kerman area fourteen chondrichthyan taxa were identified. The abundance of chondrichthyan teeth in Famennian strata is considerable. The high abundance of protacrodonts and larger proportion of shallower shelves of pheobodonts appeared to dominate ...
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From Late Devonian-Early Carboniferous strata in the Kerman area fourteen chondrichthyan taxa were identified. The abundance of chondrichthyan teeth in Famennian strata is considerable. The high abundance of protacrodonts and larger proportion of shallower shelves of pheobodonts appeared to dominate in a shallow environment at the Famennian. The chondricthyan assemblage from the Famennian of the Hutk section resembles the Chahriseh fauna in Esfahan district that reveals similar palaeoenvironmental conditions in Central Iran basin. The occurrence of Deihim mansureae in duplicate Zone marks the youngest record for the species up to Early Tournaisian.
A Mehrabi; M Dastanpour; Sh Radfar; M.R Vaziri; R Derakhshani
Abstract
In the Zagros structural zone of Iran, there is a broad range of emergent salt domes, a unique morphology in the world that is developed in tectonic environment. In the Zagros fold-thrust belt, emergent salt domes exhibit the linear patterns. Such trends indicate their relation to the linear structural ...
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In the Zagros structural zone of Iran, there is a broad range of emergent salt domes, a unique morphology in the world that is developed in tectonic environment. In the Zagros fold-thrust belt, emergent salt domes exhibit the linear patterns. Such trends indicate their relation to the linear structural features which are observable by Landsat imagery. Detection of fault lineaments and their spatial relationship with salt dome locations have been the matter of this study on statistically viewpoints. Based on the remote sensing analysis, horizontal displacements of parts of folded structures and distribution of Hormoz series salt domes, 33 fault lineaments were detected. A statistical method called the weight of evidence modeling is used for determination of the relationship between salt domes places and fault lineaments trends. For this purpose, the fault lineaments map and the center of salt domes map are converted to the raster one and buffers extracted around the fault lineaments; then, the spatial relationship between the salt domes and fault lineaments are quantified using weights of evidence method. The salt domes are associated spatially with the fault lineaments within distances of 1 km in horizon. Weights of evidence method show that the fault lineaments could be the most important foci for emplacement of salt domes in the study area.
F Foladi; M Dastanpour
Abstract
In order to study of the systematic and paleoecology of Cretaceous (Aptian-Early cenomanian) Brachiopods, the Estakhrooyeh section in NW Baghin, west of Kerman City with 190 m in thickness was studied and sampled. The Middle part of this section contains diverse assemblages of macrofossils such as Brachiopods, ...
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In order to study of the systematic and paleoecology of Cretaceous (Aptian-Early cenomanian) Brachiopods, the Estakhrooyeh section in NW Baghin, west of Kerman City with 190 m in thickness was studied and sampled. The Middle part of this section contains diverse assemblages of macrofossils such as Brachiopods, Echinoderms, Gastropods, Bivalves and Corals. This biostratigraphic research resulted in to examine 5 genera and 10 species of brachiopoda of Sellithyrididae family for the first time from this section. The Brachiopods indicate Aptian-Early Cenomanian ages for these sediments. The Faunal assemblages suggest a shallow and suitable environment prevailed during the deposition of the strata.
F Hosseinipour; M.J Hassani; M Dastanpour
Abstract
The Guri limestone member of the Mishan formation in SE of Zagros Basin (N of Bandar-e-Abbas) consists of the thick bedded limestone bearing oyster shells. Seven species of Ostreidae and Gryphaeidae belonging to four genera of Crassostrea, Cubitostrea, Ostrea and Hyotissa were identified as: Cubitostrea ...
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The Guri limestone member of the Mishan formation in SE of Zagros Basin (N of Bandar-e-Abbas) consists of the thick bedded limestone bearing oyster shells. Seven species of Ostreidae and Gryphaeidae belonging to four genera of Crassostrea, Cubitostrea, Ostrea and Hyotissa were identified as: Cubitostrea frondosa, Ostrea (cubitostrea) dubertreti, Cubitostrea digitalina, Crassostrea gryphoides, Hyotissa virleti, Ostrea vesitata and Ostrea plicatula. These fossils are reported from the Zagros Basin for the first time. These deposits assign to a Burdigalian age based on the presence of Borelis melo curdica. The reclining mode of life, adjacent right and left valves and rare erosion traces on shells indicate an in situ buried in hyper saline shallow and near shore water with moderate to low sedimentation rate. The early Miocene oyster assemblages similar to this studied assemblage have been reported from the other parts of Tethys showing a seaway connected to Tethys during the early Miocene. Therefore, the oysters can be used for the Paleogeographical correlation in the early Miocene deposits.
