Results 101 to 110 of about 1,722,612 (173)

Sr, C, and O isotope geochemistry of Ordovician brachiopods: a major isotopic event around the middle-late Ordovician transition

, 2003
Here we present Sr, C, and O isotope curves for Ordovician marine calcite based on analyses of 206 calcitic brachiopods from 10 localities worldwide. These are the first Ordovician-wide isotope curves that can be placed within the newly emerging global ...
Li, Rong-Yu, Meidla, Tõnu, Shields, Graham A., Rong, Jia-Yu, Carden, Giles A.F., Veizer, Jan   +5 more
core   +1 more source

Cambrian Stage 3 Paleomagnetism of the South China Block: Implications for Early Paleozoic Gondwana Reconstructions

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract The paleogeographic position of the South China Block (SCB) during the early Paleozoic and its affiliation with Gondwana remain debated. We report new high‐quality paleomagnetic data from sandstone‐dominated Cambrian Stage 3 strata correlated with the Yu'anshan–Hongjingshao succession collected along the southwestern margin of the SCB ...
Dongmeng Zhang, Xin Cheng, Vadim A. Kravchinsky, Mengting Zhong, Bitian Wei, Nan Jiang, Longyun Xing, Shuqi Lan, Weijie Zhang, Jiahui Zhang, Chao Chang, Wei Liu, Yanan Zhou, Xingliang Zhang, Hanning Wu   +14 more
wiley   +1 more source

Looking Under the Orogenic Lid—Assessing the European Basement Beneath the Alpine Wedge by U‐Pb Zircon Geochronology

Tectonics, Volume 45, Issue 10, October 2026.
Abstract Following continental collision, the distal European margin was overridden by the Alpine wedge and is now largely concealed beneath the mostly intact orogenic lid. Consequently, the geological evolution and nature of the hidden basement domains remain poorly constrained.
Bianca Heberer, Elisabeth Holzner, Veronika Tenczer, Friedrich Finger, Bernhard Salcher, István Dunkl, Axel Gerdes, Hans Egger, Gertrude Friedl, Gabor Tari, Maria Parlea, Hubert Putz   +11 more
wiley   +1 more source

Reconstructing the Climatic-Oceanic Environment and Exploring the Enrichment Mechanism of Organic Matter in the Black Shale across the Late Ordovician-Early Silurian Transition on the Upper Yangtze Platform Using Geochemical Proxies. [PDF]

ACS Omega, 2020
Wei Z, Wang Y, Wang G, Zhang T, He W, Ma X.   +5 more
europepmc   +1 more source

Semi‐Natural Grasslands as Important Soil Carbon Reservoirs: Environmental Drivers of Topsoil Carbon Stocks Across Temperate Grassland Habitat Types

Applied Vegetation Science, Volume 29, Issue 4, October/December 2026.
Temperate semi‐natural grasslands soil organic carbon (SOC) stock was significantly associated with soil characteristics, climate, vegetation structure and management. These results indicate that maintaining long‐term extensive management and preventing conversion or degradation of semi‐natural grasslands can simultaneously support biodiversity ...
Elvi Liiv, Triin Reitalu, Aveliina Helm
wiley   +1 more source

Timing of deposition, orogenesis and glaciation within the Dalradian rocks of Scotland: constraints from U-Pb zircon ages [PDF]

, 2002
The stratigraphical and structural continuity of the Late Proterozoic Dalradian rocks of the Scottish Highlands is re-examined in the light of new U-Pb zircon ages on the tuffs belonging to the Tayvallich Volcanic Formation (601 ñ 4 Ma), and on the late ...
Redwood, S.D., Muir, R.J., Bluck, B.J., Paterson, B.A., Dempster, T.J., Rogerson, G., Tanner, P.W.G., Ireland, T.R.   +7 more
core   +1 more source

Thermal History and Hydrocarbon Accumulation Stages in Majiagou Formation of Ordovician in the East-Central Ordos Basin

Energies
The marine carbonates in the Ordovician Majiagou Formation in the Ordos Basin have significant exploration potential. Research has focused on their thermal history and hydrocarbon accumulation stages, as these are essential for guiding the exploration ...
Hua Tao, Junping Cui, Fanfan Zhao, Zhanli Ren, Kai Qi, Hao Liu, Shihao Su   +6 more
doaj   +1 more source

Cinderella Biodiversity: Three Decades of Monitoring Reveal Earlier Emergence and Increasing Abundance in Undervalued and Sparsely Recorded Flying Insects and Ballooning Spiders

Global Change Biology, Volume 32, Issue 10, October 2026.
We provide 30 year trends in abundance and phenology for the less well known charismatic flying insects and ballooning spiders that we class as neglected and undervalued ‘Cinderella species’. We show that of the 71 groups studied, the majority of taxa, all trophic groups and nearly all habitat use groups report increasing abundances and stable or ...
Yoann Bourhis, Alice E. Milne, Chris R. Shortall, Matt Hampson, Dan Blumgart, William E. Kunin, James R. Bell   +6 more
wiley   +1 more source

High‐pressure phase preservation in ordinary L‐chondrite melt veins: Evidence for control by post‐shock thermal evolution

Meteoritics &Planetary Science, Volume 61, Issue 10, Page 2549-2566, October 2026.
Abstract This study investigates the petrography and mineralogy of three L‐type ordinary chondrite meteorites: Northwest Africa (NWA) 4137 (L6), Homestead (L5), and Kunashak (L6). We studied the shock‐related deformation features in the matrix and the characteristics of the melt veins, including the presence or absence of high‐pressure (HP) phases. Our
S. Effraimidou, I. Baziotis, M. Simopoulou, L. Ferrière, C. Sanchez‐Valle, S. Klemme, J. Berndt, P. D. Asimow   +7 more
wiley   +1 more source

Spatial and temporal evolution of a coastal erg margin: The Middle Jurassic Page Sandstone, southern Utah, USA

Sedimentology, Volume 73, Issue 6, Page 2081-2119, October 2026.
ABSTRACT Aeolian deflationary events are erosive to static stages where sediment supply is insufficient to support bedform migration and preservation in the rock record. In the vicinity of shallow‐marine environments, inland rises of relative water table and associated generation of deflationary super surfaces may be driven by the onset of ...
Victor J. P. Hême de Lacotte, Chester H. C. Davies, Briony J. Bowler, Stuart M. Clarke, Thomas J. H. Dodd   +4 more
wiley   +1 more source