Geochemistry of the cretaceous-tertiary (K/T) transition clays in the Southeastern Turkey
Yükleniyor...
Tarih
2024-04-17
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Komitet Zrównoważonej Gospodarki Surowcami Mineralnymi PAN
Erişim Hakkı
info:eu-repo/semantics/restrictedAccess
Özet
The mineralogy and chemistry of Upper Cretaceous -Lower Paleocene claystone sediments from Mardin and Batman, southeastern Turkey, were analyzed. The main mineral paragenesis in the Upper Cretaceous member formed chlorite-smectite (C -S) and illite, while the Lower Paleocene member occurred of chlorite -vermiculite (C -V) and vermiculite minerals. The clays were silica -poor but indicated high values of Al, Fe, Mg, Cr, Ni, V, and Zr. Lower contents of the alkali elements (Na, Ca, Mg, K) of the clayey sediments suggests a relatively denser weathering of the source area. The mineralogical compositions, major element ratios, trace, and rare earth element (REE) contents of the sediments show that the Upper Cretaceous member consists of materials with a mainly felsic source lithology, while relatively contributions from basic sources are found in the Lower Paleocene unit. A comparison of the major and trace element contents of the phyllosilicate/clay minerals with the members revealed that the patterns of the clays were different from each other, although the enrichments/decreases varied depending on the origin (basement rocks or detrital) of the derived rocks, minerals, and elements. REE content of clays increased from detrital to phyllosilicate/clay minerals of chemical/diagenetic/neoformation origin during the Lower Paleocene. During the Cretaceous and Tertiary periods, local or regional geodynamic and diagenetic events largely governed the rock sedimentation processes and provenance variations amongst Germav Formation members.
Açıklama
Anahtar Kelimeler
Arabian Plate, Clay Minerals, Germav, Formation, Source, REE
Kaynak
Gospodarka Surowcami Mineralnymi-Mineral Resources Management
WoS Q Değeri
Q4
Scopus Q Değeri
Cilt
40
Sayı
1
Künye
Tetiker, S.(2024). Geochemistry of the cretaceous-tertiary (K/T) transition clays in the Southeastern Turkey. Gospodarka Surowcami Mineralnymi-Mineral Resources Management.
