作者: Amalendu Ghosh Amalendu Ghosh , Abdul Awal Abdul Awal , AHNA Khan , GS Alam , Shafiqul Islam Shafiqul Islam
DOI: 10.3906/VET-1305-10
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摘要: The Cankiri Basin, located in the northern part of Central Anatolian Plateau, is a large Tertiary basin where thick Miocene to Quaternary continental sediments overlay Cretaceous-Tertiary units. This investigation focuses on Tuglu Formation, an Upper succession mainly composed dark grey silty and organic rich clays. type section has been sampled for array multidisciplinary analyses. palaeontological proxies included ostracod, foraminifer, nannoplankton, pollen, molluscs, charophytes, small mammal assemblages, fish, crab remains. abiotic parameters studied were: palaeomagnetism environmental magnetism, stable carbon oxygen isotope ratios (on ostracods bulk sediment samples), strontium foraminifera), major elemental composition sediments. All analysed point setting characterised by permanent water bodies affected strong salinity oscillations. A shallow saline lake developed freshwater lake. Barren layers, potentially linked short subaerial exposure, mark end transition fluvial environment. Geochemical analysis confirms aridity-humidity oscillations as recorded micropalaeontological proxies. Analysis assemblages refined chronology with onset deposition at base zone MN9 (around 11 Ma) continuous until MN11 8 Ma). records from delta18O values consistent subdued topography no prominent mountain belts were yet plateau margin. If correct, this suggests that least Basin did not experience rain shadow conditions, regional surface uplift area most likely occurred after Ma.