Results 61 to 70 of about 105,423 (180)

Experimental Study on the Self-Healing Behavior of Fractured Rocks Induced by Water-CO2-Rock Interactions in the Shendong Coalfield

open access: yesGeofluids, 2020
This study experimentally investigated the self-healing behavior, referring to the naturally occurring water permeability decrease, of fractured rocks exposed to water-CO2-rock interaction (WCRI). The experiment was conducted on prefractured specimens of
Jinfeng Ju, Quansheng Li, Jialin Xu
doaj   +1 more source

Formation of clay minerals and exhumation of lower‐crustal rocks at Atlantis Massif, Mid‐Atlantic Ridge

open access: yesGeochemistry, Geophysics, Geosystems, 2008
Low‐temperature alteration products in gabbros from the ocean floor have significant implications for incipient processes of seawater‐rock interaction and exhumation tectonics of the lower‐crustal rocks.
Toshio Nozaka   +2 more
doaj   +1 more source

Diffusion of organic anions in clay-rich media: Retardation and effect of anion exclusion.

open access: yesChemosphere, 2018
The transport of emerging organic contaminants through the geosphere is often an environmental issue. The sorption of organic compounds slows their transport in soils and porous rocks and retardation is often assessed by extrapolation of batch ...
R. Dagnelie   +6 more
semanticscholar   +1 more source

Mineralogical Evolution of Magnetic Rhodic Oxisols under Different Lithological Influences in Brazil

open access: yesRevista Brasileira de Ciência do Solo
Ferrimagnetic Fe-oxides are important soil components, which are present in most of the agricultural soils of Brazil. Distinction, origin, and assessment of the influence of these minerals on magnetism and geochemistry is a challenge for mineralogists ...
Luiz Aníbal Silva Filho   +6 more
doaj   +1 more source

Assessing Chemo-mechanical Behavior Induced by CO2-Water-rock Interactions in Clay-rich Fault Gouges

open access: yesProcedia Earth and Planetary Science, 2017
Ensuring sealing integrity is key for long-term (>10 000 years) storage of CO2. Fault reactivation and leakage can potentially be impacted by (often slow) CO2-water-rock interactions. We used the predictive power of geochemical modelling coupled to mechanical experiments on simulated fault gouge material to study the impact of long-term CO2-water-rock ...
Bakker, Elisenda   +2 more
openaire   +1 more source

Clay mineral diversity and abundance in sedimentary rocks of Gale crater, Mars

open access: yesScience Advances, 2018
Clay minerals found in Gale crater, Mars, record surficial chemical weathering and changing conditions in an ancient lake. Clay minerals provide indicators of the evolution of aqueous conditions and possible habitats for life on ancient Mars. Analyses by
T. Bristow   +25 more
semanticscholar   +1 more source

Detailed facies analysis of Cenomanian–Turonian organic‐rich mudstones: Implications for depositional controls on source rocks

open access: yes, 2020
Understanding mudstone depositional processes, including both traction transport and dynamic mechanisms, requires a re‐assessment of how these processes relate to the accumulation and preservation of organic carbon in fine‐grained successions.
Emma L. Percy, P. Pedersen
semanticscholar   +1 more source

Induced polarization of volcanic rocks. 3. Imaging clay cap properties in geothermal fields

open access: yesGeophysical Journal International, 2019
Smectite-rich clay caps form permeability seals in geothermal systems. The presence of smec-tite is also responsible for a strong surface (interfacial) electrical conductivity and polarization due to their electrical double layer properties. We developed
A. Revil   +6 more
semanticscholar   +1 more source

Vulkanisme kompleks Gunung Patiayam di Kecamatan Jekulo, Kabupaten Kudus, Provinsi Jawa Tengah

open access: yesIndonesian Journal on Geoscience, 2014
http://dx.doi.org/10.17014/ijog.vol3no2.20082The Mount Patiayam Complex was interpreted by previous researchers as “Patiayam Dome”. That was reasoned by dips following its slope directions.
Sri Mulyaningsih   +4 more
doaj   +1 more source

Fluid‐Rock Interactions in Clay‐Rich Seals: Impact on Transport and Mechanical Properties

open access: yes, 2018
Fluid‐rock interaction in low‐permeable clay‐rich seal units is an important topic for the evaluation of the long‐term seal integrity during geological storage of CO2. In low‐permeable sealing units, the diffusion of CO2 into the matrix is a slow process, and studies of CO2‐initiated fluid‐rock interaction in seals are challenging.
Skurtveit, Elin   +2 more
openaire   +2 more sources

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