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Geosciences, Volume 15, Issue 11

November 2025 - 35 articles

Cover Story: The Eastern Mediterranean has been in the focus for hydrocarbon exploration over the last few decades. Sapropelic layers, with significant TOC, are known in this area to be considered as source rocks, particularly from the Neogene period. We investigate onshore occurrences of such geological layers of the Upper Miocene age from Gavdos Island, South Greece. By applying various laboratory methods, such as Rock-Eval pyrolysis, CHNS, and XRF, our results indicate gas-prone organic matter with variable preservation status, due to oxidation episodes under generally dysoxic-to-suboxic depositional conditions. Various CIA, C.I., Sr/Cu, and Rb/Sr inorganic indices have been used for investigating the paleoclimatic weathering and preservation status. Such sapropelic layers, if found in the deep offshore basins south of Crete, might generate important hydrocarbon accumulations. View this paper
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Articles (35)

  • Article
  • Open Access
259 Views
29 Pages

Engineering Performance of Data-Driven Powder Factor Optimization in Tunnel Blasting Under Complex Geological Conditions

  • Azita Yusoof,
  • Edy Tonnizam Mohamad,
  • Mohd Saidin Misnan,
  • Mohammad Afrazi and
  • Danial Jahed Armaghani

19 November 2025

This study introduces a cohesive and flexible methodology for optimizing tunnel blasting in the Gambang Tunnel 1 project, located in Malaysia’s geologically intricate tropical setting. The study examines the intrinsic difficulties of attaining...

  • Article
  • Open Access
344 Views
25 Pages

19 November 2025

The Dingri–Gangba fault, a major structure within the Himalayan Orogenic Belt, records significant geological events, including the tectonic evolution of the northern margin of the Indian plate and the uplift of the Tibetan Plateau. However, it...

  • Article
  • Open Access
426 Views
24 Pages

18 November 2025

In the Missan oilfields, the linkage among basement faults, halokinesis, and hydrocarbon accumulation, and their control on structural-trap geometry and seal effectiveness, remains insufficiently constrained, especially the timing/drivers of salt pie...

  • Article
  • Open Access
335 Views
22 Pages

18 November 2025

The Pułtusk meteorite, classified as an H5 ordinary chondrite, is one of the best documented Polish falls, yet some important data on its physical and thermophysical properties remain limited. This study provides new measurements and derived par...

  • Article
  • Open Access
420 Views
19 Pages

17 November 2025

The piezocone penetration test (CPTU) provides rapid, continuous measurements of in situ geotechnical parameters, making it a valuable tool for soil classification and stratigraphic identification. However, conventional classification methods frequen...

  • Article
  • Open Access
459 Views
21 Pages

The SISMIKO Monitoring Network and Insights into the 2024 Seismic Swarms on the Ionian Side of the Calabrian Arc

  • Antonio Costanzo,
  • Marina Pastori,
  • Adriano Cavaliere,
  • Ezio D’Alema,
  • Lucia Margheriti,
  • Simone Marzorati,
  • Milena Moretti,
  • Davide Piccinini,
  • Mario Anselmi and
  • Samer Bagh
  • + 9 authors

14 November 2025

Following the Mw 5.0 earthquake of 1 August 2024, which struck the Ionian sector of north-central Calabria (southern Italy), the SISMIKO emergency group of INGV deployed a temporary seismic network to enhance coverage of the National Seismic Network....

  • Article
  • Open Access
389 Views
29 Pages

14 November 2025

Deeply buried carbonate successions in China’s Tarim Basin host substantial hydrocarbons. In the southern Tahe Oilfield, Middle–Lower Ordovician limestones show little evidence of subaerial weathering because the Upper Ordovician strata p...

  • Article
  • Open Access
335 Views
17 Pages

14 November 2025

With the rapid development of infrastructure and the need to protect natural ecosystems, manufactured sand is used to replace river sand in concretes. To compare the deterioration patterns of concretes made with different sands, C50 specimens using b...

  • Feature Paper
  • Article
  • Open Access
434 Views
18 Pages

Characterization of Newly Discovered Phosphorite Deposits in Al-Tafeh, Jordan

  • Faten Al-Slaty,
  • Khalil M. Ibrahim,
  • Madlin Amjad and
  • Mohammad Muhtaseb

14 November 2025

This study reports the discovery of a newly identified phosphorite deposit in the Al-Tafeh area of northern Jordan. Geological fieldwork investigated three outcrops and one comparison site in the Russifa area. Geochemical analyses reveal a high P2O5...

  • Article
  • Open Access
762 Views
23 Pages

Exploration for Gas Generation Potential and Geochemical Signatures of Neogene Clastic Deposits from Gavdos Island, Greece, Eastern Mediterranean

  • Dimosthenis Telemenis,
  • Spyridon Bellas,
  • Nikolaos Kallithrakas-Kontos,
  • Nikos Pasadakis and
  • Emmanouil Manoutsoglou

13 November 2025

The latest exploration developments and discoveries from the eastern Mediterranean documented that Neogene formations can act as source-rocks for hydrocarbon generation and their exploitation delivered large amounts of mostly biogenic gas to the mark...

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Geosciences - ISSN 2076-3263