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Geosciences, Volume 15, Issue 12

December 2025 - 36 articles

Cover Story: By the late 19th century, Paul Choffat and Henri Sauvage had laid the foundations for the study of vertebrates from the Upper Cretaceous of western Iberia, making a major contribution to European palaeontology of the time. These assemblages occur in carbonate platform, marginal marine, and terrestrial facies that characterised the Late Cretaceous Palaeo-Atlantic margin of the European archipelago. They exhibit predominantly Tethyan affinities while also indicating links with North African, northern, and eastern European faunas. The record includes chondrichthyans, actinopterygians, amphibians, turtles, crocodylomorphs, and squamates, and is notable for the latest Cretaceous small-bodied dinosaurs and mammals. Recent discoveries of new fossil sites have expanded knowledge of these faunas and have led to the recognition of new taxa. View this paper
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Articles (36)

  • Article
  • Open Access
362 Views
17 Pages

9 December 2025

Rain-on-snow (ROS) events significantly impact hydrological processes in snowy regions, yet their seasonal drivers remain poorly understood, particularly in low-elevation and low-gradient catchments. This study uses an XGBoost-SHAP explainable artifi...

  • Article
  • Open Access
244 Views
22 Pages

8 December 2025

Based on comprehensive interpretation of three-dimensional seismic data and quantitative analysis of basin-boundary fault activity in the Nanpu Sag, this study employs subsidence history backstripping and equilibrium profile techniques to reconstruct...

  • Article
  • Open Access
380 Views
16 Pages

Historical Geomagnetic Declination in Mainland Spain Derived from Topographic Fieldwork Records (1871–1940)

  • Jose Manuel Tordesillas,
  • Francisco Javier Pavón-Carrasco,
  • Alberto Núñez,
  • Marina López-Muga,
  • Elena Camacho and
  • Ana Belén Anquela

6 December 2025

In 1870, the newly created Instituto Geográfico of Spain, the precursor of the current Instituto Geográfico Nacional (IGN), began to carry out work for the preparation of the National Topographic Map of Spain, a major project that would...

  • Article
  • Open Access
343 Views
20 Pages

4 December 2025

Particle size distribution (PSD), also referred to as grain-size distribution (GSD), is a fundamental characteristic of granular materials, influencing packing density, porosity, permeability, and mechanical behavior across soils, sediments, and indu...

  • Article
  • Open Access
654 Views
25 Pages

Elemental Geochemical Analysis for the Gold–Antimony Segregation in the Gutaishan Deposit: Insights from Stibnite and Pyrite

  • Shiyi Lu,
  • Yongyun Ning,
  • Liang Xiao,
  • Ke Huang,
  • Siqi Chen,
  • Xuan Zhu,
  • Hao He and
  • Miao Yu

4 December 2025

In many gold–antimony deposits throughout the world, the sequence of Au and Sb precipitation varies significantly. In high-temperature systems such as hydrothermal Au deposits, gold typically precipitates prior to antimony, whereas in lower-tem...

  • Article
  • Open Access
726 Views
47 Pages

Timing of Deformation in the Provence Fold-and-Thrust Belt (SE France) as Constrained by U-Pb Calcite Geochronology

  • Anies Zeboudj,
  • Olivier Lacombe,
  • Nicolas E. Beaudoin,
  • Jean-Paul Callot,
  • Juliette Lamarche,
  • Abel Guihou,
  • Guilhem Hoareau,
  • Gaëlle Barbotin,
  • Christophe Pecheyran and
  • Pierre Deschamps

4 December 2025

A combination of fault and fracture analyses, paleostress reconstructions from calcite twins, and U-Pb dating of syn-kinematic calcite mineralization provides new insights into the Cretaceous–Tertiary tectonic evolution of the Provence fold-and...

  • Article
  • Open Access
266 Views
21 Pages

A Novel Poly-Potassium Salt Osmotic Technique for High-Suction Water Retention in Compacted Kaolin

  • Abolfazl Baghbani,
  • Yi Lu,
  • Sankara Narayanan Murugesan,
  • Hossam Abuel Naga and
  • Eng-Choon Leong

4 December 2025

Accurate suction control underpins thermo-hydro-mechanical (THM) characterization of unsaturated soils, yet conventional polyethylene-glycol (PEG) osmotic methods suffer from membrane degradation, polymer intrusion, and marked temperature sensitivity...

  • Article
  • Open Access
316 Views
22 Pages

3 December 2025

The correct assessment of slope stability under seismic loading requires not only the magnitude of ground acceleration to be considered but also its frequency content. In this study, a hybrid finite element/limit equilibrium (FEM–LEM) approach...

  • Article
  • Open Access
459 Views
22 Pages

2 December 2025

This paper examines the Harirud (Harirod, Tejen) River Basin, a vital transboundary water source shared by Afghanistan, Iran, and Turkmenistan. The basin supports farming, energy production, and home supply in a dry area. Despite its ecological, soci...

  • Article
  • Open Access
608 Views
28 Pages

2 December 2025

This study is an attempt to compile and complete structural features of the Kalba-Narym Zone in East Kazakhstan belonging to the western Central Asian Orogenic Belt, which is known to be well-endowed with the occurrence of pegmatite rare-metal minera...

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Geosciences - ISSN 2076-3263