Calculation of salt basin depth using fluid inclusions in halite from the Ordovician Ordos Basin in China

Authors

  • Аnatolіy R. Galamay Institute of Geology and Geochemistry of Combustible Minerals, National Academy of Sciences of Ukraine
  • Fanwei Meng State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences
  • Krzysztof Bukowski Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology http://orcid.org/0000-0001-7289-5956
  • Aleksandr Lyubchak Institute of Geology and Geochemistry of Combustible Minerals, National Academy of Sciences of Ukraine http://orcid.org/0000-0002-0700-6929
  • Yongsheng Zhang Institute of Mineral Resources, Chinese Academy of Geological Sciences
  • Pei Ni State Key Laboratory for Mineral Deposits Research, Institute of Geo-Fluid Research, School of Earth Sciences and Engineering, Nanjing University http://orcid.org/0000-0002-2107-5082

Keywords:

Halite, gas-liquid inclusion, brine depth, Ordos Basin, Ordovician evaporite

Abstract

During the Middle Ordovician, the salt deposits of the Majiagou Formation of the Ordos Basin in North China formed, the halite including various genetic types of fluid inclusion. In this study, fit-testing of primary inclusions was performed to reconstruct the physical and chemical conditions during original halite sedimentation. During the post-sedimentation stage, salt was subjected to elevated temperatures (62–70°C) and pressures of tens of megapascals. From these measurements and mathematical calculations, the gas pressure was identified in the primary fluid inclusions, which allowed us to estimate that the brine column thickness in the salt basin was approximately 40 m

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Published

2019-11-05

Issue

Vol. 63 No. 3 (2019)

Section

Articles

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