textural and compositional study of sefidrud near shore sediments
Subject Areas :hossein baghery 1 , سعید خدابخش 2 , hamed tabatabie 3
1 - مرکز ملی اقیانوس شناسی ابران
2 - دانشگاه بوعلی سینا همدان
3 - مرکز ملی اقیانوس شناسی ابران
Keywords: sedimentology, River and Coastal sediment, Sefidrud Delta,
Abstract :
In this study efforted Using field Sampling and Sedimentary Analysis to display Textural andCompositional of Sefidrud Near shore Sediments. And with the Sedimentological parameters suchas Mean, Skewness and Sorting, sedimentary process and sediment resource distinguished.Sampling and statistical analyses of the grain size distributions of coast (Back shore, Dunes, BeachRidge, Lagoon, Sand plain) and Sefid Rud river mouth sediments at various locations along thecoastline show that they varied in their mean grain size and values of sorting and skewness. Thestatistical parameters of grain size distributions thus allowed recognition of distinct subenvironments. The size distribution of such sediments suggests that the various processes that areresponsible for their transportation and deposition are wave, current and wind action and scatter plotof standard deviation versus skewness distinguished coast samples are bimodal and river samplesare polymodal. Also with detection of heavy mineral and X-Ray and sediment cross section, showthat magnetite and Illmenite and quartz, feldspar and plagioclase are the most important heavyminerals and rock fragments as respectively
