نتایج جستجو برای: alluvial plain
تعداد نتایج: 48323 فیلتر نتایج به سال:
This article reviews information from published papers and studies by the authors about placer diamond deposits. Original data were obtained in result of field laboratory-analytical work carried out various countries Africa South America. The main types deposits – fluvial, fluvioglacial, eolian, man-made have been considered characterized. attention is given to fluvial continental placers, whic...
Abstract A hydrogeochemical study was carried out on the shallow Catania Plain alluvial aquifer, in eastern Sicily to reconstruct its hydrogeological structure, meteoric recharge and assess influence of human activities groundwater. To characterize geochemistry two sampling campaigns were out, August–October 2004 April–May 2005 47 sites distributed throughout plain. The samples collected analyz...
ویژگی های محیط طبیعی، مهمترین عامل در جهت شکل گیری سکونت گاه های انسانی خصوصاً در ادوار باستانی می باشد و بهترین راه درجهت پی بردن به ویژگی های طبیعی سکونت گاه های باستانی در زمان برپایی آنها، بررسی های زمین باستان شناسی است. هدف از این پژوهش، بررسی نقش عوامل محیطی در مکان گزینی تپه باستانی چالتاسیان بوده است. این تپه باستانی، در دشت ورامین و در قسمت-های میانی مخروط افکنه جاجرود، واقع شده است. ا...
Clay minerals deserve special attention as they play a crucial role in many soils. The clay mineralogy of five gypsiferous soils from different landforms in eastern Isfahan was investigated using X-ray diffraction (XRD). In addition, soil aggregates and wind-deposited sediments were examined by scanning electron microscope (SEM) and analyzed by energy dispersive X-ray analyzer (EDX). The resul...
world's coastlines are the most dynamic natural environments and diverse extraordinary and unique processes are active in this area. one of results of these processes is the formation and evolution of alluvial fans and delta. the studied areas include hormoz strait coastal, shour, jalaby and hassan-langi river delta which in the form of a strip with a varying width covers the areas from th...
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