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Geochemistry and Geochronology of Rocks

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Earth Sciences".

Deadline for manuscript submissions: 28 February 2027 | Viewed by 1269

Editor

School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
Interests: rocks; geochemistry; geochronology

Special Issue Information

Dear Colleagues,

Rocks archive the dynamic history of our planet. Their petrological, geochemical, and isotopic fingerprints, when read through time, unlock the secrets of the fundamental geodynamic processes that have shaped the Earth's crust. By deciphering these records, we can trace tectonic evolution, pinpoint crust–mantle interactions, and reconstruct past environments. Furthermore, ages and geochemical–isotopic signals are key to understanding the formation and stabilization of cratons, as well as the genesis of mineral deposits during supercontinent amalgamation.

This Special Issue aims to compile research that explores these profound connections. We seek submissions addressing the following themes:

  • Geochronology and isotope geochemistry: refining the timelines of Earth processes.
  • Petrotectonic assemblages: interpreting the spatio-temporal patterns of igneous, sedimentary, and metamorphic rocks to model tectonics and crustal growth.
  • Rock composition and physical properties: establishing quantitative links between chemistry, mineralogy, and physical characteristics like heat production and seismic velocity.
  • Sedimentary provenance: tracing source-to-sink pathways through chemical and mineralogical fingerprints.
  • Mineral chemistry: using mineral-scale data to reconstruct pressure, temperature, and fugacity conditions of formation.
  • Ore systems: unraveling the connections between rocks, fluids, and economic mineral deposits.
  • Data-driven petrology: leveraging machine learning and AI to extract new knowledge from petrological, geochemical, and geochronological datasets.

We encourage the submission of both original research and comprehensive reviews.

Dr. Yang Wang
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • geochronology
  • isotope geochemistry
  • petrotectonic assemblages
  • sedimentary provenance
  • physical properties
  • ore deposit
  • geobarometer and geothermometer
  • data-driven petrology/geochemistry

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Published Papers (2 papers)

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Research

37 pages, 10113 KB  
Article
Sedimentary Controls on Organic Matter Preservation and Gamma-Ray Response in Marine Middle Miocene Successions: Insights from Surface Gamma-Ray Spectrometry Data
by Marija Pejić, Duje Smirčić, Iva Kolenković Močilac, Anja Vrbaški, Petar Maruna, Dino Benedik, Ana Brcković Gruić, Josipa Kapuralić and Marko Cvetković
Appl. Sci. 2026, 16(11), 5272; https://doi.org/10.3390/app16115272 - 25 May 2026
Viewed by 359
Abstract
Gamma-ray parameters are widely used to screen organic-rich intervals, yet the influence of lithofacies heterogeneity on the reliability of gamma-ray-based TOC predictions remains incompletely evaluated. This study aims to (1) assess the relationships between gamma-ray parameters and TOC, (2) evaluate how lithofacies heterogeneity [...] Read more.
Gamma-ray parameters are widely used to screen organic-rich intervals, yet the influence of lithofacies heterogeneity on the reliability of gamma-ray-based TOC predictions remains incompletely evaluated. This study aims to (1) assess the relationships between gamma-ray parameters and TOC, (2) evaluate how lithofacies heterogeneity influences predictive reliability, and (3) establish practical screening criteria for identifying organic-rich intervals in two Middle Miocene marine successions from the Croatian part of the Pannonian Basin System. Outcrop gamma-ray spectrometry measurements (K, U, Th) and dose rate (DR) were paired with co-located laboratory TOC analyses (Voćin n = 45; Podsused n = 96). Pearson correlation, multiple and simple linear regression, logistic regression for TOC ≥ 1 wt.%, and threshold analysis were applied to evaluate relationships between gamma-ray parameters and organic matter enrichment. U and DR show moderate positive relationships with TOC in both sections, whereas K and Th are not statistically significant predictors. Regression and threshold analyses identify U as the primary predictor of TOC and show more stable and systematic predictive behaviour in the homogeneous Podsused succession than in the heterogeneous Voćin section. The results indicate that lithofacies heterogeneity primarily influences predictive stability rather than the existence of TOC–gamma-ray relationships. The study demonstrates that lithofacies heterogeneity is an important factor influencing the reliability of gamma-ray-based TOC screening and provides a framework for assessing the suitability of uranium and dose-rate proxies in different sedimentary settings. Full article
(This article belongs to the Special Issue Geochemistry and Geochronology of Rocks)
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18 pages, 4058 KB  
Article
Pore-Scale Evolution of Effective Properties in Porous Rocks During Dissolution/Erosion and Precipitation
by Xiaoyu Wang, Songqing Zheng, Yingfu He, Yujie Wang, Enhao Liu, Yandong Zhang, Fengchang Yang and Bowen Ling
Appl. Sci. 2026, 16(3), 1287; https://doi.org/10.3390/app16031287 - 27 Jan 2026
Viewed by 548
Abstract
Reactive transport in porous media exists ubiquitously in natural and industrial systems—reformation of geological energy repository, carbon dioxide (CO2) sequestration, CO2 storage via mineralization, and soil remediation are just some examples where geo-/bio-chemical reactions play a key role. Reactive transport [...] Read more.
Reactive transport in porous media exists ubiquitously in natural and industrial systems—reformation of geological energy repository, carbon dioxide (CO2) sequestration, CO2 storage via mineralization, and soil remediation are just some examples where geo-/bio-chemical reactions play a key role. Reactive transport models are expected to provide assessments of (1) the effective property variation and (2) the reaction capability. However, the synergy among flow, solute transport, and reaction undermines the predictability of the existing model. In recent decades, the Micro-Continuum Approach (MCA) has demonstrated advantages for modeling pore-scale reactive transport and high accuracy compared with experiments. In this study, we present an MCA-based numerical framework that simulates dissolution/erosion or precipitation in digital rocks. The framework imports two- or three-dimensional digital rock samples, conducts reactive transport simulations, and evaluates dynamic changes in porosity, surface area, permeability tensor, tortuosity, mass change, and reaction rate. The results show that samples with similar effective properties, e.g., porosity or permeability, may exhibit different reaction abilities, suggesting that the pore-scale geometry has a strong impact on reactive transport. Additionally, the numerical framework demonstrates the advantage of conducting multiple reaction studies on the same sample, in contrast to reality, where there is often only one physical experiment. This advantage enables the identification of the optimal condition, quantified by the dimensionless Péclet number and Damköhler number, to reach the maximum reaction. We believe that the newly developed framework serves as a toolbox for evaluating reactivity capacity and predicting effective properties of digital samples. Full article
(This article belongs to the Special Issue Geochemistry and Geochronology of Rocks)
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