the kashkan formation (paleocene to middle eocene), consists of conglomerate, sandstone, and siltstone in the zagros folded zone, southwest iran. type of the sedimentary facies, architectural elements and trace fossils show that kashkan deposits were formed in a low sinuosity braided stream system, with north to south flow direction. the formation displays coarsening-upward succession reflects ...

We investigated leaf, cone and fruit impressions preserved in a siltstone deposit between coal seams the late Paleocene Tongue River Member near Otter, southeast Montana, to assess floristic diversity composition. document presence of Taxodium based on seed scales as well foliage branches associated pollen cones, low-diversity angiosperm assemblage about 15 genera dominated by Platanaceae (Plat...

The oldest theropod dinosaurs are known from the Carnian of Argentina and Brazil. However, the evolutionary diversification of this group after its initial radiation but prior to the Triassic-Jurassic boundary is still poorly understood because of a sparse fossil record near that boundary. Here, we report on a new basal theropod, Daemonosaurus chauliodus gen. et sp. nov., from the latest Triass...

Dolomites and eruptive rocks are well-developed in the Permian Fengcheng Formation Junggar Basin China, which oil gas accumulated extensively. Until now, high-yield industrial flows have been obtained dolomitic tuff of second unit Formation, demonstrates huge exploration potential thick layer massive tuff. The lithology this area has gradually transformed from dolomite, to siltstone east west. ...

In this paper, the mechanical behaviors of different lithological rocks coal measure strata from Shanxi Formation in eastern margin Ordos Basin, China, were investigated through uniaxial compression tests, and deformation characteristics failure modes investigated. On basis, energy evolution lithology was also discussed. The results show that there are obvious differences properties strata, res...

Field mapping, colour, particle size distribution, pH and x-ray diffraction studies were undertaken to elucidate the genesis of Ediki kaolin. The kaolin occurs within the Mungo formation of upper cretaceous age, ascribed to the Douala sedimentary basin. The kaolin profile consists of upward coarsening sandstone – siltstone – sandstone sequence with a gradient of 35 to 40°. Texturally, the kaoli...

The Triassic section north of Currie in southern Elko County, Nevada, is almost 500 m thick and is assigned to the Thaynes Group and overlying Shinarump Formation of the Chinle Group. The Thaynes Group disconformably overlies the Permian Gerster Formation and is mostly calcareous shale with interbedded wackestones that yield marine invertebrate fossils, especially ammonoids. The Shinarump Forma...

The Pass Peak Formation is a Tertiary basin-flank deposit exposed throughout much of the Hoback Basin; a depression physiographically distinct from, but structurally continuous with, the northern Green River Basin. Two lithofacies of the Pass Peak Formation are identified. A northern quartzite conglomeratesandstone facies, possibly as thick as 3200 ft, intertongues southward with a sandstone-si...