Formation of Dolomite Reservoirs: Diagenetic and Tectonic Controls

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Geochemistry and Geochronology".

Deadline for manuscript submissions: 28 February 2026 | Viewed by 397

Special Issue Editor

School of Geosciences, Yangtze University, Wuhan 430100, China
Interests: geochronology; diagenesis; fluid inclusions

Special Issue Information

Dear Colleagues,

Dolomites are key host rocks for hydrocarbon accumulation and mineral deposits, yet their formation remains one of the most enduring puzzles in sedimentology. A central challenge in addressing this issue is understanding how the dynamic coupling between basin tectonics and multi-phase diagenetic evolution governs the development and spatial distribution of high-quality, porous dolomite reservoirs.

This Special Issue invites innovative studies that explore how tectono-diagenetic processes drive basin-wide fluid flow and subsequent dolomitization. We particularly encourage contributions that integrate advanced methodologies, including cutting-edge geochemical proxies (such as clumped and metal isotopes), dating (such as in-situ U-Pb geochronology), and the modelling of diagenetic processes, to elucidate the nature of dolomitizing fluids and the mechanisms that drive their movement. Studies focusing on deciphering porosity evolution in complex diagenetic regimes, particularly how cementation, dissolution, compaction, and fracturing—modulated by tectonics and fluid chemistry—ultimately control dolomite reservoir quality, are also welcome. Additionally, we are interested in studies addressing the reservoir effects of porous dolomites and welcome manuscripts that explore the processes and history of hydrocarbon injection into dolomite reservoirs.

Dr. Ao Su
Guest Editor

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Keywords

  • dolomitization
  • fluid flow
  • diagenesis
  • porosity evolution
  • hydrocarbon injection
  • dating/petrochronology

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Published Papers (1 paper)

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Research

26 pages, 10001 KB  
Article
Dolomite Reservoir Genesis Controlled by Sedimentary Cycles: Geochemical Evidence from the Middle Permian Qixia Formation, SE Sichuan Basin
by Rui Xu, Guangwei Wang, Fang Hao, Li Quan, Ling Zhou, Lingao Kong, Dinglin Peng and Modong Duan
Minerals 2025, 15(11), 1114; https://doi.org/10.3390/min15111114 - 27 Oct 2025
Viewed by 269
Abstract
Dolostone is an important reservoir for hydrocarbons, and significant hydrocarbons have been produced in the Middle Permian Qixia Formation dolostone reservoirs in the southeastern Sichuan Basin. The origin and formation process of the dolomite reservoir in the research area are studied through thin-section, [...] Read more.
Dolostone is an important reservoir for hydrocarbons, and significant hydrocarbons have been produced in the Middle Permian Qixia Formation dolostone reservoirs in the southeastern Sichuan Basin. The origin and formation process of the dolomite reservoir in the research area are studied through thin-section, geochemical, and sedimentary cycle analyses and U-Pb geochronology. Three types of dolomites were identified, including stratiform fine-crystalline dolomite (D1), patchy fine-crystalline dolomite (D2), and saddle dolomite cement (SD). D1 and D2 exhibit a range of δ13C values from 3.39‰ to 4.21‰ and a range of δ18O values from −6.06‰ to −5.75‰, indicating a mild depletion of δ18O relative to coeval seawater while maintaining seawater-equivalent δ13C signatures. Their 87Sr/86Sr ratios and REE patterns indicate seawater-derived fluids for D1 and D2 (both test results showed a U-Pb age of ≈274 Ma) and hydrothermal origin for SD. Sedimentary cycle analysis found that the regression process in the fourth-order sequence is conducive to the formation of dolomite under the background of regression in the third-order sequence. Exposure of bioclastic shoals enabled evaporated seawater reflux, forming penecontemporaneous D1 in fluid-saturated settings. Selective dolomitization occurred in the bioturbation structure with good porosity and permeability, forming D2. In the burial stage, the hydrothermal fluid had a slight transformation on the dolomite and formed SD. This model highlights transgressive–regressive cycle controls on reservoir development, providing exploration criteria for analogous carbonate systems. Full article
(This article belongs to the Special Issue Formation of Dolomite Reservoirs: Diagenetic and Tectonic Controls)
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