Results 151 to 160 of about 105,423 (180)

Significant δ44/40Ca variations between carbonate- and clay-rich marine sediments from the Lesser Antilles forearc and implications for mantle heterogeneity

, 2020
Calcium isotopes can potentially be used to trace many geological processes. Characterizing the Ca isotopic compositions of marine sediments is a precondition for using Ca isotopes to trace the recycling of marine sediments into the mantle and mantle ...
Hongli Zhu, Fang Liu, Xin Li, Y. An, X. Nan, L. Du, F. Huang, Wei-dong Sun, Zhaofeng Zhang   +8 more
semanticscholar   +1 more source

Effect of confining pressure on diffusion coefficients in clay-rich, low-permeability sedimentary rocks

Journal of Contaminant Hydrology, 2016
The effect of confining pressure (CP) on the diffusion of tritiated-water (HTO) and iodide (I-) tracers through Ordovician rocks from the Michigan Basin, southwestern Ontario, Canada, and Opalinus Clay from Schlattingen, Switzerland was investigated in laboratory experiments.
Y, Xiang, T, Al, M, Mazurek
openaire   +2 more sources

Effect of fluid saturation on the shear modulus of artificial clay-rich tight sandstones

, 2020
For many geophysical problems it is important to understand the influence of clay on the elastic behaviour of the rocks. However, this is difficult to measure because the complex petrophysical characteristics of tight sandstones make it challenging to ...
Dongqing Li, Jianxin Wei, B. Di, D. Shuai, L. Tian, P. Ding   +5 more
semanticscholar   +1 more source

Effect of CO_2-H_2O-Smectite Interactions on Permeability of Clay-Rich Rocks Under CO_2 Storage Conditions

Rock Mechanics and Rock Engineering, 2023
M. Zhang, C. J. Spiers, S. Hangx
semanticscholar   +1 more source

Impact of tectonism on pore type and pore structure evolution in organic-rich shale: Implications for gas storage and migration pathways in naturally deformed rocks

Fuel, 2018
Tectonism significantly affects the pore type and pore structure evolution of organic-rich shale. The Lower Cambrian Lujiaping Shale in the northeastern of the upper Yangtze area is a significant marine shale being studied for shale gas exploration in ...
Hongjian Zhu, Y. Ju, Yu Qi, Cheng Huang, Le Zhang   +4 more
semanticscholar   +1 more source

Weathering of Permian sedimentary rocks and soil clay minerals transformations under subtropical climate, southern Brazil (Paraná State)

Geoderma, 2019
Mineral evolution in weathering zones is usually a complex process. Mixed-layered minerals (MLMs) can form as a result of progressive weathering advancement, promoting important geochemical changes in soils.
G. R. Andrade, A. C. Azevedo, Jacqueline Kochan Lepchak, Thais Assis   +3 more
semanticscholar   +1 more source

Influence of Rock Firing on the Wettability of Clay-Rich Sandstones

Energy & Fuels, 2023
Ahmed Al-Yaseri, Nurudeen Yekeen, Abubakar Isah, Safwat Abdel-Azeim, Abdulwahab Muhammad Bello, Sivabalan Sakthivel   +5 more
openaire   +1 more source

Fault reactivation in clay-rich rocks – effects of water-clay interactions

Clay-rich rocks play an important role in critical practical applications, particularly as natural barriers in nuclear waste repositories and subsurface caprocks for CO2 storage. The interaction between electrostatically charged clay minerals and polar fluids (e.g., water) can lead to swelling or, under confined conditions, build-up of swelling stress.
Markus Rast, Claudio Madonna, Paul A. Selvadurai, Antonio Salazar Vásquez, Quinn Wenning, Jonas B. Ruh   +5 more
openaire   +1 more source

Time-dependent deformation of clay-rich rocks enveloping reservoirs exploited for geo-energy purposes

Though the energy transition aims to phase out fossil fuels while continuing to exploit the subsurface for other storage solutions (e.g. geological CO2 storage, temporary hydrogen storage), natural gas, as a low-carbon energy carrier, will continue to play a role in our energy mix for the foreseeable future.
Mike Sep, Suzanne Hangx, Hans de Bresser
openaire   +1 more source

Prediction of clay-rich rock failure coupling local and global non-destructive measurement techniques.

Understanding the damage processes in clay-bearing rocks is a decisive factor in geological engineering. But, more generally, they may also contribute to localized deformation and thus the rupture of fault gauges in seismic zones. Due to their physical and mechanical properties, such as low permeability, fracture healing potential, and effective ...
Matthieu Lusseyran, Audrey Bonnelye, Alexandre Dimanov, Jérôme Fortin, Alexandre Tanguy, Hakim Gharbi, Pierre Dick   +6 more
openaire   +1 more source