Results 81 to 90 of about 6,861 (219)

Groundwater Recharge and Hydrogeochemical Evolution in Leizhou Peninsula, China

Journal of Chemistry, 2015
An analysis of the stable isotopes and the major ions in the surface water and groundwater in the Leizhou Peninsula was performed to identify the sources and recharge mechanisms of the groundwater.
Yintao Lu, Changyuan Tang, Jianyao Chen, Junhong Chen   +3 more
doaj   +1 more source

Holocene thermokarst and pingo development in the Kolyma Lowland (NE Siberia) [PDF]

, 2018
Ground ice and sedimentary records of a pingo exposure reveal insights into Holocene permafrost, landscape and climate dynamics. Early to mid‐Holocene thermokarst lake deposits contain rich floral and faunal paleoassemblages, which indicate lake ...
Bobrov, Anatoly, Fritz, Michael, Günther, Frank, Matthes, Heidrun, Meyer, Hanno, Nazarova, Larisa, Opel, Thomas, Palagushkina, Olga, Pogosyan, Lilit, Savelieva, Larisa, Schirrmeister, Lutz, Syrykh, Liudmila, Wetterich, Sebastian   +12 more
core   +2 more sources

Short‐Term Effect of Mars‐Like Radiation on Carbon and Oxygen Isotope Compositions of Carbonates

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract The stable isotope composition of carbonates records the environmental formation conditions and can indicate potential biosignatures if formed biologically. Martian meteorite carbonates display unusually high δ13C values, not explained using known terrestrial processes.
Nicolas Randazzo, Sang‐Tae Kim, Fabien Stalport, Maikel C. Rheinstäder, Hervé Cottin, Patrice Coll   +5 more
wiley   +1 more source

Origin of fluids in Las Tres Vírgenes Geothermal Field [PDF]

E3S Web of Conferences, 2019
A geochemical survey of fluids in the Las Tres Vírgenes geothermal field (LTVGF) in Baja California Sur, Mexico, was carried out to describe their origins and evolution within the reservoir. Major and minor elements and noble gas isotopes (He, Ne, Ar, Kr,
Hernández Hernández Mario A., Pinti Daniele L., Castro M. Clara, López-Hernández Aída, Shouakar-Stash Orfan, Richard Luc, Núñez-Hernández Sandra, Hall Chris M., Ramírez Montes Miguel A., Sánchez-Cornejo Carlos   +9 more
doaj   +1 more source

Fine‐scale reconstruction of pelagic fish migration by iso‐logging of eye lens

Methods in Ecology and Evolution, Volume 17, Issue 1, Page 77-84, January 2026.
Abstract Understanding lifetime space use by pelagic animals is pivotal for ecology and fisheries management, but electronic tags are costly, labour‐intensive and rarely able to capture juvenile movement. We implemented an iso‐logging workflow that converts stable isotope chronologies in eye lenses into continuous migration tracks, and demonstrate its ...
Jun Matsubayashi, Yutaka Osada, Katsuya Kimura, Yoshinori Aoki, Makoto Okazaki, Tetsuro Senda, Yuya Ueda, Naoto Matsubara, Yuichi Tsuda   +8 more
wiley   +1 more source

Variation characteristics of stable hydrogen and oxygen isotopes in precipitation of Longtan trough valley and Maoba syncline in Youyang, Chongqing

Carsologica Sinica
This study aims to explore the characteristics and influencing factors of δ18O and δD in precipitation in two adjacent topographic areas of Longtan trough valley and Maoba syncline in Wuling mountain, southeastern Chongqing.
Tingting SUN, Yan YANG, Xiuyang JIANG, Zhenyu LUO, Yueer TANG   +4 more
doaj   +1 more source

Terrestrial exposure of a fresh Martian meteorite causes rapid changes in hydrogen isotopes and water concentrations [PDF]

, 2018
Determining the hydrogen isotopic compositions and H2O contents of meteorites and their components is important for addressing key cosmochemical questions about the abundance and source(s) of water in planetary bodies.
A Al-Kathiri, A Stephant, AE Saal, AR Sarafian, C Aubaud, C Engrand, CMO’D Alexander, DR Bell, E Hauri, E Pendall, G Boato, HC Aoudjehane, IP Baziotis, JJ Barnes, JL Gooding, JP Greenwood, LA Leshin, LAJ Garvie, LJ Hallis, LJ Hallis, LJ Hallis, LJ Hallis, LL Watson, MR Lee, N Sugiura, NZ Boctor, P Mane, R Tartèse, RD Ash, T Usui, ZD Sharp   +30 more
core   +1 more source

Palagonitization of Volcanic Rocks in Polar Climates: The Case of Deception Island (Antarctica)

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract A detailed study of palagonitization in rocks from Deception Island—one of Antarctica's most active volcanoes—has been performed to advance our understanding of this alteration process. A detailed petrographic (optical and SEM), mineralogical (XRD), and mineral and glass spot geochemistry (EDS and EMP) characterization has been conducted on ...
Oriol Vilanova‐Pagès, Guillem Gisbert, Helena Albert, Adelina Geyer, Meritxell Aulinas, Raquel Arasanz, Jordi Ibañez‐Insa, Antonio Polo‐Sánchez, Antonio Álvarez‐Valero, Olga Prieto‐Ballesteros, Santiago Giralt   +10 more
wiley   +1 more source

Identification of Two Types of Metallogenic Fluids in the Ultra-Large Huize Pb–Zn Deposit, SW China

Geofluids, 2017
This work investigates the ultra-large Huize Pb–Zn deposit, based on the results of preceding studies and detailed field geological surveys. The existing findings were reorganized and reinterpreted and supplemented with C–H–O isotopic measurements, which
Yan Zhang, Runsheng Han, Pingtang Wei, Lei Wang   +3 more
doaj   +1 more source

The potential of gypsum speleothems for paleoclimatology: application to the Iberian Roman Humid Period

Scientific Reports, 2020
Carbonate cave deposits (speleothems) have been used widely for paleoclimate reconstructions; however, few studies have examined the utility of other speleothem-forming minerals for this purpose.
Fernando Gázquez, Thomas K. Bauska, Laia Comas-Bru, Bassam Ghaleb, José-María Calaforra, David A. Hodell   +5 more
doaj   +1 more source