Scholarly record
GEOLOGIC AND MINERALOGIC PROPERTIES OF BOR-ULUKISLA NEOGENE BASIN (NIGDE)
Abstract
Bor-UlukД±sla Basin is located in Central Anatolia, southeastern part of Tuz Golu Basin. Tertiary aged sedimentary, volcano-sedimentary and volcanic rock units outcrop at the investigation area. Neogene aged Bor-UlukД±sla Basin is a tectonically controlled graben basin and contains syngenetically deposited sediments. Outcropping Neogene sediments, composed of clastic, clayey, dolomitic, tuffitic, evaporitic and silicified rocks, overlie Paleocene-Eocene marine clastic rocks and Paleozoic metamorphic rocks. The Neogene lacustrine sediments, in ascending order, have been named as Kizilbayir, Katrandedetepe and Bestepeler formations. Kizilbayir formation (Upper Miocene) represents the first shalllow lacustrine-all\"uvial fan sediments, Katrandedetepe formation (Upper Miocene) is composed of saline mud flat-playa lake deposits and BeЕџtepeler formation (Upper Miocene-Pliocene) consisits of shallow lake-alluvial fan deposits of Bor-Ulukisla depositional basin. MelendizdaДџ and Hasandag volcanics and pyroclastic rocks (Upper Miocene-Pliocene-Quaternary) intercalate the lacustrine units of the basin. A detailed mineralogical investigation was carried out with bed rock and soil samples collected from investigation area and with three deep cores. The clastic fraction of the Bor-UlukД±Еџla basin sediment consists of quartz, feldspar, mica, chlorite and weathering products of volcanic rocks such as kaolinite, illite, zeolite. The non-clastic evaporite fraction is dominated by dolomite, calcite, anhydrite, halite and gypsum. Anhydrite is the dominant sulphate mineral occurring throughout the lower profile in nodule shaped or lens and variable amounts. Dolomite and calcite are the main carbonate minerals while aragonite is rare. XRD studies have revealed that dolomites are high calcian dolomites. Halite is observed in the lower profile of the drilling wells (893-992 meters) with some associated anhydrite, dolomite and clay minerals. The main clay mineral assemblage consists of Ca-smectite, Na-smectite, illite, chlorite, kaolinite and paligorskite. Petroleum zones were cut during the drilling. The zone ranges from 1035 to 1168.40 meters and has a total thickness of 133.40 meters. Petroleum zones consist of bituminous shale level, mudstone-siltstone-sandstone alternation, dolomite and mudstone-dolomite alternations in ascending order. Petroleum occurred as filling the pores, cavities and thin fissures of the rocks. According to geologic and mineralogic results, the investigation area is arid, closed playa lake character.
Publication details
References7
Blumenthal, M. Yuksek Bolkardaglarinin Kuzey Kenari Bolgelerinin ve Bati Uzantilarinin Jeolojisi, MTA yayini no: 7, Seri D, 1956.
Demirtasli, E., Bilgin, A. Z., Erenler, F., Isiklar, S., Sanli, D. Y., Selim, M., Turhan, N. Bolkardaglarinin Jeolojisi, Cumhuriyetin 50. yili Yerbilimleri Kongresi Tebligler, MTA yayini, Ankara, 608p., 1973.
Yoldas, R. Ulukisla (Nigde) Bitumlu sist alaninin jeolojik ve ekonomik olanaklari, MTA rapor no: 5050, 1973.
Oktay, F. Ulukisla ve cevresinin stratigrafisi ve jeolojik evrimi, Turkye Jeol. Kur. BuIt, 25, 15-24, 1982.
Atabey, E. ve Ayhan, A. Nigde-Ulukisla-Camardi-Ciftehan Yoresinin Jeolojisi, MTA Derleme no: 8064, 1986.
JCPDS. Mineral Powder Diffraction File Databook, Joint Committee on Powder Diffraction Standards, Swarthmore, Pennsylvania, 78 Ip, 1993.
Reineck, H. E. and Singh, LB. Depositional sedimentary environments, Springer Verlag, Berlin, 44Op, 1977.
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.