نتایج جستجو برای: Geological formation
تعداد نتایج: 549412 فیلتر نتایج به سال:
saluk mount is selected for devonian biostratigraphy. this area located at southwest of bojnurd. in this study three sections are selected and two sections, chahar-borj and tabar sections with a thickness of 650 m, which consist mainly of calcareous sediments was studied in detailed but third section, qelli section, with a thickness of about 450m which consist mainly of sandstone and evaporates...
sediment yield data, collected for most regions in iran has been insufficient and not so reliable and there is still not any sufficiently reliable methodology available for sediment yield assessment in the country as a whole. on the other hand, an attainment of reliable sediment yield data is a must and key requirement for the design of effective sediment management as well as control strategie...
the main purpose of this research paper is to compare qiujiahe formation (є1q) and longmaxi formation (s1ln) in north sichuan basin where shale gas exploration has not been fully researched, and hence represents the possibility of shale gas concentration under the complex geological conditions. based on valid laboratorial analysis, there are optimistic prospects for є1q and s1ln of research are...
Studies related to erosion and soil conservation of litho logical and geological characteristics of catchments have particular importance, Due to their effects. Erosion and sediment production are related to many factors, in which, the sensitivity of geological formation to erosion is the most important parameter. In this study, formations sensitivity to erosion in two sub-basins of Doviraj Riv...
Introduction: Many natural phenomena have many variables that make it difficult to find relationships between them using common mathematical methods. This problem, along with the impossibility of measuring all elements of nature, has led to a major evolution in the way of understanding and explaining phenomena. In this way, one can use the fractal geometry with the theory that many natural phen...
this research concentrates on the lithostratigraphy, biostratigraphy, microfacies and sedimentary environment of the asmari and gachsaran formations at southwest firuzabad. the thickness of the studied section in all 608.95 meters that 220.8 meters belong to the asmari formation and 387.95 meters belong to the gachsaran formation (champe and mol members). in the study area, the asmari formation...
Prominent eroded volcanic features often dominate landscapes and stimulate interest in the geological processes that formed these landscapes. Trimble SketchUp (formerly Google SketchUp and hereinafter simply SketchUp) can be used by educators as a comprehensive geological teaching tool to model the complex processes, stages of formation, and key features of a volcanic region. This study outline...
In this paper, we discuss and critique existing hypotheses about the geology of Middle-earth in light of current geological theories of planetary formation, mountain building (orogeny) and plate tectonics. We dispute the prevailing tectonic explanation for the major geological features of Middle-earth and Arda on the basis of evidence as yet not fully considered about the formation of the plane...
Study area is Cheshme-Ali Damghan, one of the main watersheds of Haj-Ali-Gholi subcatchment located in central drainage basin of Iran. Research was carried out via generating needed informative themes, detecting location of water samples and overlaying and interpreting themes. The effect of geological formations on water quality was analyzed after geometric overlaying of themes and assessing wa...
KuhSefid Flourite deposit is located about 110 km south east of Mashhad. Geological units of the region related to Kashafroud Formation with Jurassic age. Most of fluorite mineralization can be seen along the faults with direction of north west-south east. Fluorite veins are differente in diameter of 2 to 2.5 m and length of 50 m. Hydrothermal solutions with maximum and minimum temperatures of ...
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