Research Information System
Yerbilimleri/ Earth Sciences, vol.28, no.1, pp.55-67, 2007 (Scopus)
Within the framework of this study, granulometric, mineralogical and geochemical characteristics of sediment samples collected from shoreline and backshore parts and additionally from marsh sediments close to shore, and one stream sediment sample of the Kocasu Delta located north of the Karacabey town in the south of the Marmara Region are investigated. The granulometric studies carried out on both modern shore sediments and back shore sand dunes indicate the presence of wind blown, river and beach characteristics. Based on the mineralogical investigations carried out on both untreated and heavy mineral fraction samples, some amphibole and pyroxene group minerals, apatite, biotite, olivine, epidote and gamet group minerals, sphene, rutile and zircon are determined X-ray diffraction studies point out the presence of ferrotschermakite hastingsite, glaucophane, tremolite and ferropargasite minerals belonging to amphibole group and andradite and almandine belonging to gamet group minerals. In addition to these minerals, augite, phlogopite, epidote, clinochlore and biotite are determined. Eight samples representing modern shore and back shore sediments and six marsh and stream sediment samples are compiled from both untreated and heavy mineral fractions and are chemically analysed for major and trace elements. As a result of analytical data interpretations due to lithologies in the feeding basin; Cr, Ni, Co and V contents are supposed to be derived from mafic and ultramafic rocks. Cu, Pb and Zn have to be transported possibly from mineralizations and/or ore deposits located at the south of Kocasu Delta and, W and As from Bursa-Uludaǧ scheelite mine. Fe, Mg, Ca, Al, Mn, Ti, P and Zr enrichments in heavy mineral fractions are in good accordance with and generated from heavy minerals.