ӨМНӨД МОНГОЛЫН ДУНД ЮРЫН УУР АМЬСГАЛ, ГЕОДИНАМИКИЙН НӨХЦӨЛ. II ХЭСЭГ: НАРИЙНСУХАЙТ ОРДЫН НҮҮРСНИЙ ГЕОХИМИЙН СУДАЛГАА
Keywords:
Нарийнсухайт, дунд юра, нүүрс, үнсний геохимиAbstract
Based on the geochemistry of coal samples, collected from East and West mines of Nariinsukhait deposit, provenance, tectonic settings and source area-paleoweathering and paleoclimate was reconstructed.
Sediments accumulated in peat swamp were mainly from acidic rocks mixed with smaller amount of intermediate rocks, indicated by Al2O3/TiO2 and A-K-CN diagrams. Seam 5 was deposited under realtively hot climate compared with upper seams (Seam 8, 9 and 10). Seam 5 is characterized by high Sr/Cu (avg. 7.4), Sr/Ba (avg. 2.5) and inertinite content (up to 35%). For upper seams, Sr/Cu (4.8), Sr/Ba (1.5) and inertinite content (~14%) are low, indicating more humid climate
and fresher water body. CIA, Ni/Co and V/Cr support the findings. In addition, сoal was deposited in foreland basin. Collision tectonic setting was dominant during Triassic and Jurassic period in southern Mongolia.
Downloads
References
АМГТГ 2021.Эрдэс баялагийн статистикийн мэдээ 2020/12. https://mrpam.gov.mn/ article/165/ (2021 оны 5 сарын 1-нд авав).
Байгалмаа, Н., Эрдэнэчимэг, Д., Эрдэнэцогт, Б., Жаргал, Л., Огата, Т., Эрдэнэбаяр, Ж., Баатархуяг, А., Нансалмаа, Д., Билгүүн, Л., (энэ дугаар). Өмнөд Монголын дунд юрын уур амьсгал, геодинамикийн нөхцөл. I хэсэг: Нарийнсухайт ордын элсэн чулууны геохимийн судалгаа
Жаргал, Л., Эрхэмбаяр, Э., Байгалмаа, Н., Батгэрэл, С., Энхтүвшин, Э., 2019. Овооттолгой ордын нүүрс болон агуулагч чулуулгийн петрографийн судалгааны үр дүнгээс. Геологийн асуудлууд 17 (519), 124-143.
Очирбат, М., Эрхэмбаяр, M., Болдбаяр, H., 2006. Өмнөговь аймгийн Гурвантэс сумын нутагт орших Нарийнсухайтын нүүрсний ордын Баруун ба Зүүн өмнөд хэсэгт 2005 онд явуулсан хайгуулын ажлын үр дүнгийн тайлан. “Айвенхоу Майнз Монголиа Инк”.
Саусгоби сэндс ХХК, 2015. Өмнөговь аймгийн Гурвантэс сумын нутагт орших Нарийнсухайтын нүүрсний ордын Баруун ба Зүүн өмнөд хэсэгт 2008- 2014 онд явуулсан хайгуулын ажлын үр дүнгийн тайлан.
Bai, Y., Liu, Zh., Sun, P., Liu, R., Hu, X., Zhao, H., Xu, Y., 2015. Rare earth and major element geochemistry of Eocene fine-grained sediments in oil shale- and coal-bearing layers of the Meihe Basin, Northeast China. Journal of Asian Earth Sciences 97, 89-101.
Bhatia M. R. & Crook K. A. W. 1986. Trace element characteristics of greywackes and tectonic setting discrimination of sedimentary basins. Contributions to Mineralogy and Petrology 92, 181–93.
Bhatia, M.R., 1983. Plate tectonics and geochemical composition of sandstones. Journal of Geology 91, 611–627
Cao, H., Guo, W., Shan, X., Ma, L., Sun, P., 2015. Paleolimnological environments and organic accumulation of the Nenjiang Formation in the southeastern Songliao Basin. China, Oil Shale 32 (1), 5–24.
Cao, J.,Wu,M., Chan, Y., Hu, K., Bian, L.Z.,Wang, L.G., Zhang, Y., 2012. Trace and rare earth elements geochemistry of Jurassic mudstones in the northern Qaidam basin, northwest. China. Chemie der Erde 72, 245–252.
Diessel, C.F.K., 1992. Coal-bearing Depositional Systems. Springer-Verlag, Berlin
Dumitru, T., Hendrix, M., 2001. Fission-track constraints on Jurassic folding and thrusting in southern Mongolia and their relationship to the Beishan thrust belt of northern China. In Hendrix, M.S., and Davis, G.A., Paleozoic and Mesozoic Tectonic Evolution of Central and Eastern Asia: From Continental Assembly to Intracontinental Deformation: Geological Society of America Memoir 194, p. 215- 229.
Hayashi, K.I., Fujisawa, H., Holland, H.D., Ohmoto, H., 1997. Geochemistry of ~1.9 Ga sedimentary rocks from northeastern Labrador, Canada. Geochimica et Cosmochimica Acta 61, 4115–4137.
Hendrix, M., Beck, M., Badarch, G., and Graham, S., 2001, Triassic synorogenic sedimentation in southern Mongolia: Early effects of intracontinental deformation, in Hendrix, M.S., and Davis, G.A., eds., Paleozoic and Mesozoic Tectonic Evolution of Central and Eastern Asia: From Continental Assembly to Intracontinental Deformation: Geological Society of America Memoir 194, p. 199– 214.
Kostina, E., Herman, A., 2013. The Middle Jurassic flora of South Mongolia: Composition, age and phytogeographic position. Review of Palaeobotany and Palynology 193, 82-98.
McLennan, S.M., Hemming, S., McDaniel, D.K., Hanson, G.N., 1993. Geochemical approaches to sedimentation, provenance, and tectonics. Geological Society of America Special Papers 284, 21–40.
Moradi, V., Sari, A., Akkaya, A., 2016. Geochemistry of the Miocene oil shale (Hançili Formation) in the Çankırı-Çorum Basin, Central Turkey: Implications for Paleoclimate conditions, source–area weathering, provenance and tectonic setting. Sedimentary Geology 341, 289- 303
Nesbitt H. W. & Young G. M. 1982. Early Proterozoic climates and plate motions inferred from major element chemistry of lutites. Nature 299, 715–17.
Nesbitt H. W. & Young G. M. 1984. Prediction of some weathering trends of plutonic and volcanic rocks based on thermodynamic and kinetic considerations. Geochimica et Cosmochimica Acta 48, 1523–1534.
Nesbitt H.W., Fedo C. M. & Young G. M. 1997. Quartz and feldspar stability, steady and non-steady-state weathering, and petrogenesis of siliciclastic sands and muds. Journal of Geology 105, 173–91.
Fedo C. M., Nesbitt H. W. & Young G. M. 1995. Unraveling the effects of potassium metasomatism in sedimentary rocks and paleosols, with implications for paleoweathering conditions and provenance. Geology 23, 921–4.
Purevjav, N., Roser, B.P., 2012. Geochemistry of Devonian–Carboniferous clastic sed-iments of the Tsetserleg terrane, Hangay Basin, Central Mongolia: provenance,source weathering, and tectonic setting. Island Arc 21, 270–287.
Roser B. P. & Korsch R. J. 1986. Determination of tectonic setting of sandstone and mudstone suites using SiO2 and K2O/ Na2O ratio. Journal of Geology 94, 635– 50.
Rudnick R. L. & Gao S. 2005. Composition of the continental crust. In Rudnick R. L. (ed.) The Crust, Treatise on Geochemistry, 3, pp. 1–64, Elsevier–Pergamon, Oxford.
Thomas, L., 2012. Coal geology. 2nd edition, Wiley-Blackwell.
Verma, S.P., Armstrong-Altrin, J.S., 2013. New multi-dimensional diagrams for tectonic discrimination of siliciclastic sediments and their application to Precambrian basins. Chemical Geology 355, 117–133.
Wang, Sh., Dong, D., Wang, Y., Li, X., Huang, J., Guan, Q., 2016. Sedimentary geochemical proxies for paleoenvironment interpretation of organic-rich shale: A case study of the Lower Silurian Longmaxi Formation, Southern Sichuan Basin, China. Journal of Natural Gas Science and Engineering 28, 691-699.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2022 Геологийн асуудлууд
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
