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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)

  • Review
  • Open Access
634 Views
34 Pages

Updated Synthesis of the Upper Cretaceous Vertebrate Assemblages from the Northern Onshore Sector of the Portuguese West Iberian Margin

  • Ricardo Jorge Pimentel,
  • Fernando Barroso-Barcenilla,
  • Mélani Berrocal-Casero and
  • Pedro Miguel Callapez

18 December 2025

Vertebrate remains from the Upper Cretaceous of Portugal have been studied for more than 140 years, beginning with the pioneering work of the Geological Commissions and early vertebrate specialists. The Cenomanian of Portugal occupies a key position...

  • Article
  • Open Access
314 Views
29 Pages

Identification of Aquifer Systems in Weathered and Fractured Sandstone Based on 3D Geological Modeling in the Mesa de Los Santos (Santander, Colombia)

  • Maria Cetina,
  • Francisco Velandia,
  • Sully Gómez,
  • Nicolas Patris,
  • Andrés Sánchez,
  • Edward Duarte,
  • Mauricio Carrillo-Hernández,
  • Johel Silva and
  • Jean-Denis Taupin

17 December 2025

Mesa de Los Santos is an elevated plateau of the Eastern Cordillera of Colombia bordered by escarpments, where groundwater resources are limited to the local recharge. The geological unit with the greatest hydrogeological potential is Los Santos Form...

  • Article
  • Open Access
181 Views
19 Pages

Characterization of Microbialites Using ERT and GPR: Insights from Neoproterozoic and Mesozoic Carbonate Systems

  • Aritz Urruela,
  • Albert Casas-Ponsatí,
  • Francisco Pinheiro Lima-Filho,
  • Mahjoub Himi and
  • Lluís Rivero

17 December 2025

The detection of subsurface stromatolites remains challenging due to their complex morphology and heterogeneous composition. This study assesses the combined application of Electrical Resistivity Tomography (ERT) and Ground Penetrating Radar (GPR) fo...

  • Article
  • Open Access
243 Views
35 Pages

15 December 2025

The Hadamengou gold deposit, located on the northern margin of the North China Craton, represents one of the region‘s most significant gold mineralization clusters. However, exploration in its deeper and peripheral sectors is constrained by eco...

  • Article
  • Open Access
206 Views
14 Pages

Persistence of Soil Water Repellency After the 2022 Bolt Creek Fire

  • Mustafa Demir,
  • Peter R. Robichaud and
  • Idil Deniz Akin

15 December 2025

Wildfire ash and water-repellent soil are new materials that are formed after a wildfire that change the mechanical and hydraulic behavior of wildfire-burned slopes. Wildfire ash is known to be typically hydrophilic and to retain water, whereas the w...

  • Article
  • Open Access
377 Views
30 Pages

Integrating PCA and Fractal Modeling for Identifying Geochemical Anomalies in the Tropics: The Malang–Lumajang Volcanic Arc, Indonesia

  • Wahyu Widodo,
  • Ernowo Ernowo,
  • Ridho Nanda Pratama,
  • Mochamad Rifat Noor,
  • Denni Widhiyatna,
  • Edya Putra,
  • Arifudin Idrus,
  • Bambang Pardiarto,
  • Zach Boakes and
  • Martua Raja Parningotan
  • + 5 authors

12 December 2025

Intense chemical weathering in tropical environments poses challenges for conventional geochemical exploration, as primary lithological signatures become heavily altered. Stream sediment geochemistry provides a robust alternative for detecting anomal...

  • Article
  • Open Access
345 Views
24 Pages

11 December 2025

Rock fracture connectivity is a developing concept that demonstrates the effectiveness of fracture networks in facilitating the preferential flow of fluid through the medium. This study demonstrates the significance and impact of fracture parameters...

  • Article
  • Open Access
290 Views
26 Pages

Mass Movement Risk Assessment in the Loess Hilly Region of Northwest China Using a Weighted Information Theoretic Framework

  • Zhiyong Hu,
  • Jinkai Yan,
  • Yongfeng Gong,
  • Fangyuan Jiang,
  • Guorui Wang,
  • Hui Wang,
  • Xiaofeng He,
  • Shichang Gao and
  • Zheng He

10 December 2025

Ground instability represents a major environmental hazard in the Loess Hilly region of Northwest China, threatening infrastructure and human safety. This study establishes an integrated information-theoretic framework for evaluating regional instabi...

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Geosciences - ISSN 2076-3263