Results 71 to 80 of about 3,473 (205)

Microbially induced sedimentary structures in fluvial settings: the gas domes from the Bolzano Megacaldera (Permian, Italy)

Sedimentology, Volume 73, Issue 4, Page 914-944, June 2026.
ABSTRACT Gas domes serve as some of the earliest and most persisting indicators of life on Earth, yet their documentation in continental environments remains sparse. This study aims to bridge this gap by examining gas domes within the Permian fluvial succession of Monte Luco, located in the caldera of the Bolzano Supervolcano. These structures occur as
Andrea Baucon, Steffen Trümper, Corrado Morelli, Carlos Neto de Carvalho, Roberto Cabella, Evelyn Kustatscher   +5 more
wiley   +1 more source

Assessing Genetic Diversity and Inbreeding Effects in an Endangered Amphibian: Effects of Ecological Restoration and Stochasticity

Ecology and Evolution, Volume 16, Issue 5, May 2026.
This study evaluated the genetic health of the endangered Rawlinsonia littlejohni following habitat modification and climatic variability. We identified two genetically distinct sub‐populations separated by limited gene flow, with heterozygosity remaining higher and inbreeding lower in the northern sub‐population containing both natural and constructed
Nadine Nolan, Sarah Stock, Alex Callen, Matt W. Hayward, Sam Wallace, Rose Upton, Michael Mahony, Kaya Klop‐Toker   +7 more
wiley   +1 more source

A Bodai Aleurolit Formáció törmelékes kőzettípusainak ásványtani, kőzettani és geokémiai jellemzői | Mineralogical, petrological and geochemical characteristics of the siliciclastic rock types of Boda Siltstone Formation

, 2006
Munkánkban a felső-permi Bodai Aleurolit Formáció (BAF, Dél-Dunántúl, Mecsek) sziliciklasztos kőzettípusainak (agyagkő, aleurolit, homokkő és albitolit) ásványtani, kőzettani és geokémiai jellemzését végeztük el.
Szakmány, György, Máthé, Zoltán, Raucsikné Varga, Andrea Beáta, Raucsik, Béla   +3 more
core  

Biomarker generation from Type II-S kerogens in claystone and limestone during hydrous and anhydrous pyrolysis

, 1998
A claystone and a limestone containing immature Type II-S kerogen were thermally matured in the presence and absence of water, to study the influence of water and clay minerals on the generation of biomarkers.
M.D Lewan, Lewan, M.D., M.P Koopmans, Carson, F.C., Koopmans, M.P., Sinninghe Damsté, J.S., F.C Carson, J.S Sinninghe Damsté   +7 more
core   +1 more source

Plant species richness response to atmospheric nitrogen deposition across bedrock types in the United States and Czechia

Ecosphere, Volume 17, Issue 5, May 2026.
Abstract Atmospheric nitrogen (N) deposition leads to many changes in terrestrial and aquatic ecosystems, affecting ecosystem processes and species composition. Terrestrial vegetation often shifts from being N‐limited to light‐limited and becomes dominated by a few fast‐growing strong competitors and generalist species.
Tomáš Chuman, Christopher M. Clark
wiley   +1 more source

Constraints from sulfur isotopes on the origin of gypsum at concrete/claystone interfaces

, 2014
International audienceTwo in situ concrete/claystone interfaces were sampled at the laboratory level in the Andra Meuse/Haute Marne (France) Underground Research Laboratory (URL) in order to study five years of interactions between Callovian-Oxfordian ...
Grangeon, Sylvain, Claret, Francis, Gaboreau, Stéphane, Linard, Yannick, Boyer, Bernard, Borschneck, Daniel, Lerouge, Catherine, Tournassat, Christophe   +7 more
core   +1 more source

Analysis of the influence of groundwater and the stress regime on bolt behaviour in underground coal mines

International Journal of Coal Science & Technology, 2019
The service failure of rock bolts and cable bolts are frequently reported issues in underground coal mines. Whilst numerous experimental investigations concerned with the service failure of bolts have been conducted, numerical modelling offers an ...
Jack A. Smith, Hamed Lamei Ramandi, Chengguo Zhang, Wendy Timms   +3 more
doaj   +1 more source

Depth‐Integrated Boron Inventories of Subducting Oceanic Plates: New Insights From Sediments and Altered Oceanic Crust at ODP Sites 1179, 1173, and DSDP Site 443

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Boron (B) is a highly fluid‐mobile tracer of slab‐derived fluids in subduction zones; however, the quantitative comparisons of B input among different oceanic plates remain poorly constrained. Here, we present a geochemical study of the sediments, chert, and altered oceanic crust (AOC) from three DSDP/ODP Sites (443, 1173, and 1179 ...
Masaya Miyoshi, Takashi Sano, Toshiaki Hasenaka, Yasushi Mori, Takaaki Fukuoka   +4 more
wiley   +1 more source

Mineralogical studies of the Maastrichtian Gerinya Claystone of the Patti Formation, southern Bida Basin, Nigeria: Implication for industrial application

, 2021
The mineralogical compositions of the Gerinya claystone, Patti Formation, Southern Bida Basin, Nigeria, were investigated to infer their sedimentological process and industrial application.
Oluwaseye P. Oyetade, Oyetade, Oluwaseye P., Ojo, Olusola J., Tayelolu M. Odesanmi, Odesanmi, Tayelolu M., Charles I. Konwea, Olusola J. Ojo, Konwea, Charles I.   +7 more
core   +1 more source

Tectonic Interplay in the Gulf of Cagliari (Italy): Extension, Compression and Strike‐Slip Movements

Basin Research, Volume 38, Issue 3, May–June 2026.
Since the Oligocene, extensional tectonics of the Sardinia Rift and Campidano Graben interacted with the collision between Sardinia and northern Africa, generating reverse faults. At the Plio‐Quaternary boundary, compressional tectonics resumed, shaping the southern margin of the gulf through transpressional tectonics of the exposed Ichnusa High ...
Anna Del Ben, Silvana Fais, Riccardo Geletti, Maria Cristina Caradonna, Veronica Frisicchio, Giuseppe Brancatelli   +5 more
wiley   +1 more source