Results 41 to 50 of about 13,254 (248)
Deep Underground Science and Engineering, EarlyView.The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza +3 more
wiley +1 more source
Disentangling Continental Weathering During the Late Paleozoic Ice Age
Geophysical Research LettersThe consumption of atmospheric CO2 through continental weathering played a critical role in shaping the evolution of the late Paleozoic Ice Age (LPIA), presumably driven by the Hercynian orogeny and the evolution of terrestrial plants.
Biao Gao +3 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
Frontiers in Earth Science, 2020 A shelf-margin depositional system is the stratigraphic product of terrigenous sediment delivery to the ocean, comprising a flat to low-gradient shelf, or topset, which transitions to a steeper deep-water slope, and, ultimately, a relatively flat basin ...
Dustin B. Bauer +4 more
doaj +1 more source
Phosphate and fluoride removal options for Hanford high‐level waste sludge processing
Environmental Progress &Sustainable Energy, EarlyView.Abstract High‐phosphate and high‐fluoride sludges represent some of the most challenging waste streams within the Hanford High‐Level Waste (HLW) inventory due to solubility constraints, impacts on glass loading, and corrosion risks during vitrification.
A. M. Westesen +4 more
wiley +1 more source
Organic Geochemical Characterization and Exploration Prospects of Hydrocarbon Source Rocks in Nepal
Energy Science &Engineering, EarlyView.It provides a more detailed introduction to the current situation of oil and gas exploration in Nepal, as well as the properties and distribution characteristics of source rocks. ABSTRACT This study aims to evaluate the hydrocarbon generation potential and exploration prospects of hydrocarbon source rocks in the Dailekh to Dang–Tansen area of Nepal ...
Guoqiang Zhang +4 more
wiley +1 more source
Energy Science &Engineering, EarlyView.In this study, the key control mechanism of surrounding rock stability is revealed by theoretical analysis and UDEC‐Trigon numerical simulation method, aiming at the problem that oil shale roof is prone to separation and slip deformation under complex stress.
Jiang Xiao +5 more
wiley +1 more source
Professor Herak's Contribution to Triassic Stratigraphy
Geologia Croatica, 2010 The beginning of Prof. Herak's scientific career was linked to theproblems of the Triass ic stratigraphy. He resolved the Triassic stratigraphyof some parts of the Croatian Dinaridcs by using dasycladalgae.
Georg Koch, Tonći Grgasović
doaj +1 more source
The Petäjäskoski Formation, a new lithostratigraphic unit in the Paleoproterozoic Peräpohja Belt, northern Finland [PDF]
Bulletin of the Geological Society of Finland, 2012 This paper gives the first description of a newly-recognized, basin-wide metasedimentary unit in the Paleoproterozoic (~2.4–1.9 Ga) Peräpohja Belt, northern Finland.
M. Kyläkoski, E. Hanski, H. Huhma
doaj +1 more source
Energy Science &Engineering, EarlyView.On the basis of core and log data, a Bayesian‐Optimized Random Forest model achieved 92.76% accuracy in classifying tight sandstone reservoirs. A gray relational analysis‐derived evaluation index shows > 80% consistency with actual gas zones. ABSTRACT Tight sandstone gas (TSG), an unconventional oil–gas resource, has heterogeneous reservoirs ...
Yin Yuan +8 more
wiley +1 more source