Results 71 to 80 of about 23,086 (153)

In situ single‐spot Rb/Sr cosmochronology of roedderite in the Ribbeck aubrite (asteroid 2024 BX1)

Meteoritics &Planetary Science, EarlyView.
Abstract The mineralogy and textures of several fragments from the Ribbeck aubrite were analyzed using a combination of scanning electron microscopy, electron microprobe analysis, μRaman spectroscopy, and laser ablation inductively coupled reaction cell mass spectrometry (LA‐ICP‐MS/MS).
Christopher J. Barnes, Aleksander Błasiak, Helge Vinje Birgerheim, Matthias Konrad‐Schmolke, Delia Rösel, Jarosław Majka, Thomas Zack   +6 more
wiley   +1 more source

Assessing the Helium Potential of Variscan Batholiths: Insight From Corsica Island

Geochemistry, Geophysics, Geosystems
Most of the current helium (He) reserves originate from fortuitous discoveries, mainly made during oil and gas exploration in sedimentary basins. As helium generation depends on U and Th α‐decay, old geological provinces gather key ingredients for high ...
H. Dutoit, F. V. Donzé, C. Cardoso, J. Charroy, C. Riba Pereyra, A. Taillefer, C. Dusséaux, D. Tisserand, L. Monnier, S. Byrdina, R. Pik, L. Truche   +11 more
doaj   +1 more source

"NMR+" shale oil experimental technology system and application

Shiyou shiyan dizhi
To accurately obtain the key reservoir evaluation parameters such as porosity, oil saturation, and movable oil saturation in shale oil, an experimental technology system "NMR+" was established based on core nuclear magnetic resonance (NMR), combined with
Yujiang SHI, Zhehao ZHANG, Jianbin ZHAO, Yanying LUO, Jinbin WAN, Guofen HE, Chenjun ZHANG, Zuzhi HU   +7 more
doaj   +1 more source

Deciphering the “Missing Xenon Paradox” in Celestial Bodies: A Multifaceted Perspective Toward Demystifying This Enigma

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Xenon (Xe) is a heavy noble gas with intriguing chemical properties, such as having several stable isotopes and the ability to form compounds under extreme conditions. Despite the predictions based on cosmochemical models that suggest xenon should be relatively abundant in planetary reservoirs, empirical data indicate a significant depletion ...
Avinash Kumar Both, Avradip Ghosh, Chin Li Cheung   +2 more
wiley   +1 more source

Bridging the Gap From Peat to Ponds: Terrestrial and Aquatic Greenhouse Gas Emissions in an Evolving Permafrost‐Associated Subarctic Peatland

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 4, April 2026.
Abstract Rapid permafrost thaw in peatlands transforms the subarctic landscape into a mosaic of ponds and peat soil, varying in moisture, carbon and nutrients, and time since thaw. As subarctic permafrost degrades, ponds emerge and mature and can gradually infill with Sphagnum peat.
Melanie S. Burnett, Cynthia M. Kallenbach, Isabelle Laurion, Jérôme Comte, Roxane Maranger, Martial Leroy, Peter M. J. Douglas   +6 more
wiley   +1 more source

Helium 3/Helium 4 dilution cryocooler for space [PDF]

Prototype dilution cryocoolers based on dilution refrigeration and adiabatic demagnetization refrigeration (ADR) cycles were designed, constructed, and tested.
Dingus, Michael L., Hendricks, John B.
core   +1 more source

Geochemical and Seismic Constraints on the Role of Mud Diapirs in Petroleum Migration and Accumulation in the Recôncavo Basin, NE Brazil

Journal of Petroleum Geology, Volume 49, Issue 2, Page 433-447, April 2026.
ABSTRACT In the Recôncavo Basin, Northeast of Brazil, mud diapirs have been reported for decades, but their role within the basin's petroleum system remains poorly constrained. Here, we combine 2D seismic interpretation, field observations, and organic geochemical analyses of rocks and oil seeps to investigate the relationship between diapirism and ...
Cora Mattos, Egberto Pereira, Lucas Pinto Heckert Bastos, René Rodrigues   +3 more
wiley   +1 more source

Geochemical differences in natural gas of Sinian Dengying Formation on the east and west sides of the Deyang-Anyue rift trough and their genesis, Sichuan Basin, SW China

Petroleum Exploration and Development
Taking the natural gas reservoirs of the Sinian Dengying Formation on the east and west sides (Gaoshiti-Moxi area and north slope of central Sichuan paleo-uplift on the east; Weiyuan and Well Datan-1 block on the west) of the Deyang-Anyue rift trough in ...
Zezhang SONG, Shigui JIN, Bing LUO, Qingyong LUO, Xingwang TIAN, Dailin YANG, Ziyu ZHANG, Wenjin ZHANG, Luya WU, Jiali TAO, Jiahuan HE, Wenzheng LI, Bingfei GE, Guan WANG, Jiawei GAO   +14 more
doaj   +1 more source

The December 2018 eruption at Etna volcano: a geochemical study on melt and fluid inclusions

Frontiers in Earth Science
This study focus on the Mt Etna December 2018 eruption with the aim of investigating the geochemical characteristics of the feeding magma. New data on major and trace element geochemistry of olivine-hosted melt inclusions (MI) in volcanic products are ...
Alessandra Correale, Rosa Anna Corsaro, Lucia Miraglia, Antonio Paonita, Silvio G. Rotolo, Silvio G. Rotolo   +5 more
doaj   +1 more source

Physical simulation experiments on competitive dissolution of helium in helium-containing to helium-rich gas reservoirs

Meitian dizhi yu kantan
Background and Purpose Helium is widely applied in high-tech and scientific research fields due to its unique physicochemical properties. Formation water plays a key role in helium migration and enrichment. Typically, in the form of dissolved gas, helium is transported in pores or fractures by formation water. When helium-rich fluids migrate to shallow
Yi ZOU, Qingyong LUO, Jianfa CHEN, Huayao ZOU, Tao DU, Xiaoqiang LIU, Xinyong CAI, Chengming YU, Zilong FANG   +8 more
openaire   +1 more source