Home > Archive > No. 1–2 (197–198) 2025 > 57–74
Geology & Geochemistry of Combustible Minerals No. 1–2 (197–198) 2025, 57–74
https://doi.org/10.15407/ggcm2025.197-198.057
Anatoliy GALAMAY1, Fanwei MENG2, Daria SYDOR1
1 Institute of Geology and Geochemistry of Combustible Minerals of National Academy of Sciences of Ukraine, Lviv, Ukraine, e-mail: galamaytolik@ukr.net
2 China University of Mining and Technology (CUMT), Xuzhou, Jiangsu Province, China, e-mail: fwmeng@isl.ac.cn
Abstract
The chemical composition of brines of fluid inclusions of different genesis has established the peculiarities of mineralogenesis of the Wenkou Depression of the Dawenkou Basin. The content of K+, Mg2+ and SO42− in sedimentary brines ranged from 27.6 to 32.9, 41.5 to 32.7, and 66.6 to 33.3 g/l, respectively. The obtained data on the chemical composition of sedimentary brines and the values of δ34S (+10.9…+35.7 ‰) and δ18O (+14.7…+19.4 ‰) of anhydrite do not exclude the influence of marine transgressions on the continental halogenation of the Dawenkou Basin. The main source of sulfate in the Basin was ancient evaporites in the Yi-Meng Mountains of Shandong Province, which were eroded by surface waters. At the post-sedimentation stage, the salt strata were heated to temperatures of about 45 and 63 ℃. Halite recrystallization occurred at elevated pressure, which was tens of times higher than normal atmospheric pressure.
Weakly mineralized waters enriched in Ca(HCO3)2, which entered the basin, led to the precipitation of gypsum or glauberite. Taking into account the high potassium content in the brines, which is close to the beginning of sylvite deposition, one can expect polyhalite (due to newly formed gypsum) mineralization to be found in the sediments.
The chemical composition of post-sedimentation brines is characterized by a wide fluctuation in the content of the main ions. In the salt-bearing stratum, brines of various compositions circulated: a) with a sharply increased (relative to the sedimentary) content of potassium, magnesium and sulfate; b) with an increased content of potassium, magnesium and a reduced content of sulfate; c) with a reduced content of potassium and an increased content of magnesium and sulfate; d) with a significantly reduced concentration of all ions.
In the XZK-101 well under investigation, no other salt minerals were found except halite, mirabilite, and glauberite. However, according to the data from the study of the chemical composition of brine inclusions in halite, in the immediate vicinity of its location in the Wenkou Depression, one should expect the detection of kieserite, langbeinite, and other salt minerals in salt deposits. The formation of langbeinite was facilitated by elevated temperatures and pressure. The brines found with an abnormally high magnesium content are apparently residual brines (reaction products) during the formation of langbeinite due to unstable sedimentary hexahydrite and sylvite.
According to the obtained data on the chemical composition of brines of inclusions in halite, the boundaries of both the halite and potassic facies on the existing facies maps of the basin are subject to revision.
Keywords
fluid inclusions, halite, brines, homogenization temperature, salt strata
Referenses
Acros, D., & Ayora, C. (1997). The use of fluіd іnclusіons іn halіte as envіronmental thermometer: an experіmental study. In M. C. Boiron & J. Pironon (Eds.), XIV ECROFІ: proceedings of the XIVth European Current Research on Fluid Inclusions, Nancy, France, July 1–4, 1997 (pp. 10–11). CNRS-CREGU.
Ayora, C., Garcia-Veigas, J., & Pueyo, J. J. (1994). The chemical and hydrological evolution of an ancient potash-forming evaporite basin as constrained by mineral sequence, fluid inclusion composition, and numerical simulation. Geochimica et Cosmochimica Acta, 58(16), 3379–3394. https://doi.org/10.1016/0016-7037(94)90093-0
Benison, K. C. (2019). How to search for life in Martian chemical sediments and their fluid and solid inclusions using petrographic and spectroscopic methods. Frontiers in Environmental Science, 7, 108. https://doi.org/10.3389/fenvs.2019.00108
Claypool, G. E., Holser, W. T., Kaplan, І. R., Sakaі, H., & Zak, І. (1980). The age curves of sulfur and oxygen іsotopes іn marіne sulfate and theіr mutual іnterpretatіon. Chemical Geology, 28, 199–260. https://doi.org/10.1016/0009-2541(80)90047-9
Doebelin, N., & Kleeberg, R. (2015). Profex: a graphical user interface for the Rietveld refinement program BGMN. Journal of Applied Crystallography, 48, 1573–1580. https://doi.org/10.1107/S1600576715014685
Eugster, H. P., Harvіe, C. E., & Weare, J. H. (1980). Mіneral equіlіbrіa іn a sіx-component seawater system, Na-K-Mg-Ca-SO4-Cl-H2O, at 25 °C. Geochimica et Cosmochimica Acta, 44(9), 1335–1347. https://doi.org/10.1016/0016-7037(80)90093-9
Galamay, A. R., Bukowski, K., Sydor, D. V., & Meng, F. (2020). The ultramicrochemical analyses (UMCA) of fluid inclusions in halite and experimental research to improve the accuracy of measurement. Minerals, 10(9), 823. https://doi.org/10.3390/min10090823
Galamay, A. R., Karakaya, M. Ç., Bukowski, K., Karakaya, N., & Yaremchuk, Y. (2023). Geochemistry of brine and paleoclimate reconstruction during sedimentation of Messinian salt in the Tuz Gölü Basin (Türkiye): Insights from the study of fluid inclusions. Minerals, 13(2), 171. https://doi.org/10.3390/min13020171
Galamay, A. R., Meng, F., Bukowski, K., Ni, P., Shanina, S. N., & Ignatovich, O. O. (2016). The sulphur and oxygen isotopic composition of anhydrite from the Upper Pechora Basin (Russia): new data in the context of the evolution of the sulphur isotopic record of Permian evaporites. Geological Quarterly, 60(4), 990–999. https://doi.org/10.7306/gq.1309
Gibson, M. E., & Benison, K. C. (2023). It’s a trap!: Modern and ancient halite as Lagerstätten. Journal of Sedimentary Research, 93(9), 642–655. https://doi.org/10.2110/jsr.2022.110
Halamai, A. R., Maksymuk, S. V., & Sydor, D. V. (2021). Heokhimichni osoblyvosti vplyvu naftohazovykh pokladiv na pokryvaiuchi soli Karpatskoi naftohazonosnoi provintsii. In Nadrokorystuvannia v Ukraini. Perspektyvy investuvannia: Mizhnarodna naukovo-praktychna konferentsiia (1–5 lystopada 2021 r.) (pp. 100–105). Lviv. [in Ukrainian]
Halamai, A. R., Sadovyi, Yu. V., Meng, F., & Sydor, D. (2024). Fizyko-khimichni umovy formuvannia polihalitu pivnichno-zakhidnoi chastyny baseinu Kaidam, KNR. Mineralohichnyi zbirnyk, 74, 94–108. https://doi.org/10.30970/min.74.08 [in Ukrainian]
Halas, S., & Szaran, J. (1999). Low-temperature thermal decomposition of sulfates to SO2 for on-line 34S/32S analysis. Analytical Chemistry, 71(15), 3254–3257. https://doi.org/10.1021/ac9900174
Khodkova, S. V. (1968). Langbeinit Peredkarpatia i ego paragenezisy. Litologiia i poleznye iskopaemye, 6, 73–85. [in Russian]
Kovalevich, V. M. (1973). Fiziko-khimicheskie usloviia formirovaniia solei Stebnikskogo kaliinogo mestorozhdeniia. Kiev: Naukova dumka. [in Russian]
Li, M. H. (1986). Paleoecological analysis of the early Tertiary oil-bearing sedimentary formation in the Dongpu depression, North China Diwa Region. Geotectonica Metallogenia, 10, 159–168. [in Chinese with English abstract]
Liu, M. W., Song, W. Q., Xu, J. Q., Zhang, Y. J., & Xu, L. J. (2003). Geological characteristics of Cambrian gypsum deposit in Longquan of Yiyuan County. Geology of Shandong, 19(1), 39–42. [in Chinese with English abstract]
Lowenstein, T. K., Li, J. & Brown, C. B. (1998). Paleotemperatures from fluid inclusions in halite: method verification and a 100,000 year paleotemperature record, Death Valley, CA. Chemical Geology, 150(3–4), 223–245. https://doi.org/10.1016/S0009-2541(98)00061-8
Meng, F., Galamay, A. R., Ni, P., Ahsan, N., & Rehman, S. U. (2020). Composition of middle-late Eocene salt lakes in the Jintan Basin of eastern China: Evidence of marine transgressions. Marine and Petroleum Geology, 122, Article 104644. https://doi.org/10.1016/j.marpetgeo.2020.104644
Meng, F., Galamay, A. R., Ni, P., Yang, C.-H., Li, Y. P., & Zhuo, Q. G. (2014). The major composition of a middle-late Eocene salt lake in the Yunying depression of Jianghan Basin of Middle China based on analyses of fluid inclusions in halite. Journal of Asian Earth Sciences, 85, 97–105. https://doi.org/10.1016/j.jseaes.2014.01.024
Paytan, A., Kastner, M., Campbell, D., & Thiemens, M. H. (1998). Sulfur isotopic composition of Cenozoic seawater sulfate. Science, 282(5393), 1459–1462. https://doi.org/10.1126/science.282.5393.1459
Petrychenko, O. Y. (1973). Metody doslidzhennia vkliuchen u mineralakh halohennykh porid. Kyiv: Naukova dumka. [in Ukrainian]
Ren, L. Y., Lin, G. F., Zhao, Z. Q., & Wang, X. W. (2000). Early Tertiary marine transgression in Dongpu depression. Acta Palaeontologica Sin., 39, 553–557. [in Chinese with English abstract]
Song, S. W. (2010). Rock salt mining and securite study of Tai’an Dawenkou Basin. Geology of Chemical Minierals, 32(3), 177–185. [in Chinese with English abstract]
Stankevich, E. F., Batalin, Iu. V., & Chaikin, V. G. (1991). Ob otlichiiakh morskikh i kontinentalnykh galogennykh otlozhenii. In Problemy morskogo i kontinentalnogo galogeneza (pp. 23–30). Novosibirsk: Nauka. [in Russian]
Valiashko, M. G. (1962). Zakonomernosti formirovaniia mestorozhdenii solei. Moskva: MGU. [in Russian]
Wang, Z. J., Li, Q., & Li, Z. C. (2003). Potentiality evaluation of gypsum resource in Dawenkou Basin in Tai’an City and suggestion on ore need predication and exploration. Land and Resources in Shangdong Province, 19(5), 23–25. [in Chinese with English abstract]
Wu, T., & Ren, L. Y. (2004). The tertiary seaway and new reservoir probe in Dongpu depression as well as its surrounded basins. Acta Palaeontologica Sin., 43, 147–154. [in Chinese with English abstract]
Xiao, B. J., Liu, A. T., Zhang, Y. Y., & Dong, W. H. (2010). Geological characteristics of Xiaotun Gypsum deposits in Zhangfanxiang of Zaozhuang City in Shandong Province. Land and Resources in Shangdong Province, 26(5), 12–15. [in Chinese with English abstract]
Xu, Y., Cao, Y., Liu, C., Zhang, H., & Nie, X. (2020). The history of transgressions during the Late Paleocene-Early Eocene in the Kuqa Depression, Tarim Basin: Constraints from C-O-S-Sr isotopic geochemistry. Minerals, 10(9), 834. https://doi.org/10.3390/min10090834
Yao, W., Wortmann, U. G., & Paytan, A. (2019). Sulfur isotopes – Use for stratigraphy during times of rapid perturbations. In M. Montenari (Ed.), Stratigraphy & Timescales: Vol. 4. Case Studies in Isotope Stratigraphy (Ch. 1, pp. 1–33). https://doi.org/10.1016/bs.sats.2019.08.004
Zhang, D., Huang, X. Y., & Li, C. J. (2013). Sources of riverine sulfate in Yellow River and its tributaries determined by sulfur and oxygen isotopes. Advances In Water Science, 24(3), 418–426. [in Chinese with English abstract]
Zhu, M. (2015). Study on the origin of salt deposit in Dawenkou Basin in Shandong Province. Land and Resources in Shangdong Province, 31(1), 27–30. [in Chinese with English abstract]