Sea level change interpretation of Caspian Sea by using magnetic susceptibility data of bottom sediments

رخساره‌های رسوبی

مقاله 2، دوره 2، شماره 1، شهریور 1388   

نوع مقاله: بدون عنوان

شناسه دیجیتال (DOI): 10.22067/sed.facies.v2i1.713

نویسندگان

شاه کرمی شاه کرمی^{* 1}؛ رحیم پور بناب رحیم پور بناب¹؛ Hamid علیزاده کتک لاهیجانی¹؛ Suzanne لروی²؛ Majid شاه حسینی³

¹ایران

²انگلستان

³ایرانی

چکیده

In this survey, in order to sedimentological studies and determine the Caspian Sea level fluctuations by variations in magnetic susceptibilities of the Caspian bottom sediments, 5 cores were taken from southeastern basin of the Caspian Sea. These samples have been analyzed for grain size, total organic carbon content, carbonate content, mineral composition and magnetic susceptibility. The results show a close relation between particle size distribution and MS magnitude due to variation in detrital influx, caused by sea-level fluctuations in different time. This process is reflected in increasing particle size and magnitude of MS simultaneously with sea-level rise and decreasing particle size and magnitude of MS simultaneously with sea-level fall. However such a relationship between magnitude of MS and carbonate and total organic carbon was not observed.

کلیدواژه‌ها

lمرکز ملی اقیانوس شناسی، دانشگاه تهران