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Full-Text Articles in Physical Sciences and Mathematics
Vertical Variations Of Minerals In Clayey Sedimentary Rocks In The Cores Of Two-Deep Exploration Wells From The Kozlu Coalfield (Zonguldak, Nw Türkiye), With Emphasis On Tonstein (Schieferton) Formation, Ali̇ İhsan Karayi̇ği̇t, Emi̇ne Sütcü, Abi̇di̇n Temel, Mustafa Ni̇yazi̇ Gündoğdu
Vertical Variations Of Minerals In Clayey Sedimentary Rocks In The Cores Of Two-Deep Exploration Wells From The Kozlu Coalfield (Zonguldak, Nw Türkiye), With Emphasis On Tonstein (Schieferton) Formation, Ali̇ İhsan Karayi̇ği̇t, Emi̇ne Sütcü, Abi̇di̇n Temel, Mustafa Ni̇yazi̇ Gündoğdu
Turkish Journal of Earth Sciences
The majority of Turkish bituminous coal resources are located in the Zonguldak Basin. The Carboniferous coal seams in the Alacaağzı, Kozlu, and Karadon formations have received interest. However, the detailed mineralogical compositions of clayey sedimentary rocks in coal-bearing sequences in the basin have been limited. This study aims to investigate vertical variations of mineralogical compositions of Carboniferous and Early Cretaceous clayey sedimentary rocks cored in the two-deep exploration wells (K20/K and K20/H) from the Kozlu coalfield using XRD and SEM-EDX analyses data. In addition, a special interest is also given to tonstein layers identified within the Kozlu and Karadon formations. …
Mineralogical And Paleobotanical Investigations Of Oligo-Miocene Petrified Wood Fromthe Southwest Of Thrace Basin (Nw Turkey), Burcu Üner, Sabah Yilmaz Şahi̇n, Ünal Akkemi̇k
Mineralogical And Paleobotanical Investigations Of Oligo-Miocene Petrified Wood Fromthe Southwest Of Thrace Basin (Nw Turkey), Burcu Üner, Sabah Yilmaz Şahi̇n, Ünal Akkemi̇k
Turkish Journal of Earth Sciences
Petrified wood samples are found within terrestrial sediments belonging to the Late Oligocene-Early Miocene Danişmen Formation in Malkara-Keşan located in the southwest of the Thrace Basin. The petrified wood in both regions is usually silicified and partly coalified. The silicification of the Tertiary wood in the Malkara-Keşan region is associated with volcanic activity and coeval sedimentation. Thin sections from petrified wood samples were taken as transverse, tangential, and radial sections. The mineralogicalpetrographic- botanical studies were carried out under a polarizing and botanical microscope. Opal-moganite-chalcedony-quartz, which are different polymorphs of silica, were detected under the microscope in the petrified wood. Results …