Results 61 to 70 of about 3,473 (205)

XV. On the Arran Claystones [PDF]

open access: yesTransactions of the Geological Society of Glasgow
The rocks which are the subject of this paper are not all of them strictly claystones. That term is restricted by mineralogists to the softer varieties of felspathic rocks; but as it is impossible to draw any line of demarcation between these softer varieties, and many other closely related rocks, and as such a line of demarcation, if drawn, would be ...
openaire   +2 more sources

Late Jurassic Carbon Isotope Excursion (Middle Oxfordian Event) Paces With Astronomical Forcing in the Northwestern Tethys

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Marine carbonate carbon isotopes (δ13C), over orbital to multi‐million‐year timescales, provide critical insight into the carbon cycle connecting Earth's atmosphere, lithosphere, hydrosphere and biosphere. However, the influence of astronomical forcing on deep time carbon cycle dynamics remains poorly constrained.
Deyan Zhang   +4 more
wiley   +1 more source

Batubara Formasi Warukin di daerah Sampit dan sekitarnya, Kalimantan Tengah

open access: yesIndonesian Journal on Geoscience, 2014
http://dx.doi.org/10.17014/ijog.vol3no1.20082The Warukin Formation in Sampit area, occupying the Barito Basin, was conformably deposited on top of the Berai Formation, but unconformably lies on the Tanjung Formation, Undifferentiated Metamorphic Rocks ...
Kusnama Kusnama
doaj   +1 more source

A Laboratory Investigation on Thermal Properties of the Opalinus Claystone [PDF]

open access: yes, 2018
Some aspects of the thermal behavior of the Opalinus claystone are investigated through laboratory tests conducted on a new hollow cylinder triaxial apparatus specially designed for studying the thermo-hydro-mechanical behavior of very low permeable ...
Mohajerani, M.   +3 more
core  

EURAD state-of-the-art report: thermo-hydro-mechanical behaviour at high temperature of host clay formations

open access: yesFrontiers in Nuclear Engineering
Most safety cases for radioactive waste disposal concepts consider a temperature limit of 90°C in the clay host rock. Being able to tolerate higher temperature would have significant advantages.
María Victoria Villar   +16 more
doaj   +1 more source

Main outcomes from in situ thermo-hydro-mechanical experiments programme to demonstrate feasibility of radioactive high-level waste disposal in the Callovo-Oxfordian claystone

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2017
In the context of radioactive waste disposal, an underground research laboratory (URL) is a facility in which experiments are conducted to demonstrate the feasibility of constructing and operating a radioactive waste disposal facility within a geological
G. Armand   +5 more
doaj   +1 more source

Mobility of Zinc in the Callovo-Oxfordian Claystone

open access: yesProcedia Earth and Planetary Science, 2013
AbstractThe diffusion of zinc was studied in the Callovo-Oxfordian claystone, which is a potential host rock for the retrievable disposal of high-level radioactive wastes. Two in-diffusion laboratory experiments were performed with initial zinc concentrations of 4 10−5 mol L−1 and 8 10−6 mol L−1 (resp.) for 35 days.
Savoye, S.   +3 more
openaire   +1 more source

Development of Holocene lacustrine microbialites on the Iberian Peninsula: Insights into environmental and depositional controls using X‐ray CT and petrography

open access: yesSedimentology, Volume 73, Issue 4, Page 1148-1184, June 2026.
ABSTRACT Microbial mats and microbialites are common in modern and ancient saline lacustrine environments and are highly responsive to biological and environmental factors. As such, they represent important sources of high‐resolution environmental data across a wide range of geological time. Nonetheless, interpretation of fossil mats is non‐trivial due
Connor Doyle   +6 more
wiley   +1 more source

Anisotropic mechanical behaviour of Callovo-Oxfordian claystone under triaxial lateral unloading

open access: yesJournal of Rock Mechanics and Geotechnical Engineering
Callovo-Oxfordian (COx) claystone has been selected as the host rock formation for the deep geological disposal of radioactive waste in France, called the Cigéo project.
Hao Wang   +4 more
doaj   +1 more source

Hydrocarbon Source Rock Potential of the Sinamar Formation, Muara Bungo, Jambi

open access: yesIndonesian Journal on Geoscience, 2014
DOI: 10.17014/ijog.v1i1.175The Oligocene Sinamar Formation consists of shale, claystone, mudstone, sandstone, conglomeratic sandstone, and intercalation of coal seams.
Moh. Heri Hermiyanto Zajuli   +1 more
doaj   +1 more source

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