Mineralogy of Holocene Sediments from the Southwestern Black Sea Shelf(Turkey)in Relation to Provenance,Sea-level and Current Regimes

作     者：Emel BAYHAN Mustafa ERGÌN Abidin TEMEL Seref KESKÌN 

作者机构：Faculty of EngineeringDepartment of Geological EngineeringHacettepe UniversityBeytepeAnkaraTurkey Ankara UniversityGeological Research Center for FluvialLacustrine and Marine Environments(AGDEJAM)and Faculty of EngineeringDepartment of Geological EngineeringTandogan06100 AnkaraTurkey Faculty of EngineeringDepartment of Geological EngineeringNigde University51100 NigdeTurkey 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报(英文版))

年 卷 期：2005年第79卷第4期

页      面：552-563页

核心收录：

学科分类：070704[理学-海洋地质] 0709[理学-地质学] 07[理学] 0707[理学-海洋科学] 0708[理学-地球物理学] 

基　　金：Th is study was supported by Turkish Scientific and Technical Research Council Grant (TÜJBÌTAK—YDABAG198Y083) program"National Marine Geology and Geophysics Projects"(N.Görür,Coordinator) 

主　　题：Black Sea shelf Holocene sediment bulk minerals clay minerals source currents transportation 

摘      要：Grain size and mineral composition of core sediments were used to investigate influences of various terrestrial and marine conditions,which have prevailed on the southwestern Black Sea shelf during the *** mud with small amounts of sand and gravel from nearby coastal hinterland is the principal sediment type,whereas sediments deposited near the shelf edge and the Istanbul Strait and off the Duru Lake(a paleo-river mouth)constitued large quantities of sand and gravel of both biogenic and terrigenic *** amounts of aragonite,1 nmmicas,quartz,feldspars,calcite and dolomite constitute the dominant non-clay minerals in bulk *** clay mineral assemblage in the〈2μm fraction is made up of smectite,illite,kaolinite and *** and calcite are mainly derived from benthic accumulations,whereas feldspars(mainly plagioclase)and smectite reflect magmaticvolcanic provenance and the distribution of 1 nm-micas and chlorite correlate with nearby metamorphic sources ***,grain size and mineral distribution generally indicate a combination of effects of wind and wave climate,longshore and offshore cyclonic currents,changing sea-level stands and nearby source rock and morphological *** is also suggested that at least part of clay minerals could be derived from the northwesterly Danube River input.