نتایج جستجو برای: micro structure of intact rocks

تعداد نتایج: 21239398  

Journal: :Archives of Civil and Mechanical Engineering 2021

Abstract Material properties largely depend on their structure, and are strongly dependent the scale of observation. Under influence various processes, structure a material can undergo evolution, which leads to major changes in mechanical parameters morphology medium. To understand behaviour given exposed factors, e.g. loading temperature treatment, be able modify it appropriately, is crucial r...

2013
Maarten Voorn Alexander Rath Ulrike Exner

Micro-Computed Tomography (μCT) is used for imaging narrowly fractured natural rocks from the subsurface of the Vienna Basin, Austria. The dolomites from the Hauptdolomit Formation represent a successfully producing reservoir for hydrocarbons (mainly gas). However, the heterogeneity of the rocks and their fracture networks make conventional predictions on economically viable exploration of the ...

رجب زاده, محمدعلی, قربانی, منصور ,

Band-e-Ziarat ophiolitic complex is located approximately about 45 Km south of Kahnuj, Kerman Province. The complex is a horst structure at the western boundary of the Jaz Murian depression, southern Lut block and southeastern Sanandaj-Sirjan zone. It bounded to the east and to the west by two major north-south trending fault zones of Jiroft and Sabzevaran. The complex is mainly composed of low...

Journal: :زمین شناسی اقتصادی 0
ریحانه احمدی روحانی محمد حسن کریم پور بهنام رحیمی آزاده ملکزاده شفارودی اورس کلوتزلی ژوزه فرانسیسکو سانتوس

introduction the investigated area is situated in the south west of the khorasan razavi province along the north west of the lut block. different types of metal ore bodies along with non-metal deposits have already been documented in the lut block (karimpour et al., 2008). most of the study area is covered with granitoid rocks. metamorphic rocks with unknown age are present in the north of the ...

Journal: :Nature Communications 2016

Journal: :Chemical and Pharmaceutical Bulletin 1999

2003
B. J. Hamill P. J. Hawke A. T. Kearsley D. H. Winiarski

Synopsis: The Loch Leven basin (56° 12' N, 3° 23' W) in the Midland Valley of Scotland has been identified as the site of the primary impact of a low-angle oblique impact event dating from the end of the Carboniferous. Together with two further downrange structures, it forms a chain of craters which appear to have been produced by fragments of a large asteroid which disintegrated on impact. Top...

2008
G. Arunakumari Madhavi Latha

The applicability of Artificial Neural Networks for predicting the stress-strain response of jointed rocks at varied confining pressures, strength properties and joint properties (frequency, orientation and strength of joints) has been studied in the present paper. The database is formed from the triaxial compression tests on different jointed rocks with different confining pressures and differ...

Journal: :Zisin (Journal of the Seismological Society of Japan. 2nd ser.) 1998

وثوق, بهرام, حاج‌علیلو, بهزاد , مؤید, محسن ,

The barite and the behavior of REE in its crystallo-chemical structure have been a major category of research done by scientists for a long time. There are various barite mineralization in Northwest Iran. These sediment-hosted resources as a type of tectonic-controlled-vein mineralization bear unconformity to their shale host rocks at Precambrian age (Riphean). The REE geochemical studies are c...

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