Results 51 to 60 of about 105,269 (259)

Critical expansion points: Mechanical signs of surrounding rock instability

Deep Underground Science and Engineering, EarlyView.
This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen, Chang Deng, Haijun Wang, Lei Tang, Jihong Yu   +4 more
wiley   +1 more source

Sources and Chemical Weathering Implications of Strontium and Hydrochemistry in an Inland Alpine Permafrost Basin

Geochemistry, Geophysics, Geosystems
The hydrochemical characteristics of river water are influenced by a multitude of factors, reflecting the surrounding geographical environment. The Shaliu River, located in the northeastern Tibetan Plateau (TP), serves as a typical inland alpine ...
Huiling Zhou, Zongxing Li, Baijuan Zhang, Fa Du, Jian Xue   +4 more
doaj   +1 more source

Effect of Lithology on Mechanical and Damage Behaviors of Concrete in Concrete-Rock Combined Specimen

Mathematics, 2022
A concrete structure built on rock foundation works together with the connected rock mass, which has a significant effect on the mechanical behaviors of the concrete structure.
Kewei Liu, Shaobo Jin, Yichao Rui, Jin Huang, Zhanxing Zhou   +4 more
doaj   +1 more source

Stratigraphy of Tithonian (Ohauan-Puaroan ) marine beds near Port Waikato, New Zealand, and a redescription of Belemnopsis aucklandica (Hochstetter). [PDF]

, 2001
Some 1500 m of marine Ohauan and Puaroan strata in the Port Waikato region of New Zealand are restudied in an attempt to resolve lithostratigraphic and biostratigraphic anomalies in published works.
Challinor, A.B.
core   +2 more sources

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Microbial biogeography of arctic streams: exploring influences of lithology and habitat

Frontiers in Microbiology, 2012
Terminal restriction fragment length polymorphism and 16S rRNA gene sequencing were used to explore the community composition of bacterial communities in biofilms on sediments (epipssamon) and rocks (epilithon) in stream reaches that drain watersheds ...
Julia R. Larouche, William B. Bowden, Rosanna eGiordano, Michael B. Flinn, Byron C. Crump   +4 more
doaj   +1 more source

Distribution of Selected Soil Nutrients in Aggregate Sizes of Soils Under Different Geologic Formations in Southeast Nigeria [PDF]

Bulgarian Journal of Soil Science, 2019
Soil nutrients which are major factors to crop yield and food security could be loss to erosion as a result of structural break down leading to water pollution and low crop yield.
Leonard Chimaobi Agim, Chioma Mildred Ahukaemere, Stanley Uche Onwudike, Chinonso Millicent Chris-Emenyeonu, Adaku Felicia Osisi, Emmanuel Emegamha Ihem, Samuel Uche Obite   +6 more
doaj   +1 more source

Effect of sedimentary heterogeneities in the sealing formation on predictive analysis of geological CO₂ storage [PDF]

, 2019
Numerical models of geologic carbon sequestration (GCS) in saline aquifers use multiphase fluid flow-characteristic curves (relative permeability and capillary pressure) to represent the interactions of the non-wetting CO2 and the wetting brine. Relative
Alkan, Amann-Hildenbrand, Amann-Hildenbrand, Anderson, André, Armitage, Bachu, Bastin, Bear, Bennion, Bielicki, Birkholzer, Birkholzer, Bloomfield, Brooks, Burnside, Cameron, Carsel, Class, Deng, Dewhurst, Dewhurst, Doughty, Ducellier, Folk, Handin, Harrington, Hayley Vosper, Hobbs, Howard, IEAGHG, IPCC, John D.O. Williams, Kaldi, Khan, Lenhard, Liu, Michael U. Onoja, Middleton, Miri, Mori, Newell, Nicot, Niemi, Noy, Okwen, Oldenburg, Onoja, Oostrom, Orlic, Orr, Peters, Rutqvist, Rutqvist, Schlumberger, Seedhouse, Seyed M. Shariatipour, Shariatipour, Shariatipour, Shukla, Smith, Standing, Stow, Van Genuchten, Vilarrasa, Williams, Yamamoto, Yang, Yang, Zhang   +69 more
core   +2 more sources

Gaborlet‐guided sparse filtering: A novel intelligent method for lithology identification by vibration signals while drilling

Deep Underground Science and Engineering, EarlyView.
The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao, Danqi Zhang, Zhenqi Song, Jinrui Wang, Qi Wang, Heqing Liu   +5 more
wiley   +1 more source

The Extending Ocean Drilling Pursuits (eODP) Project: Synthesizing Scientific Ocean Drilling Data

Geochemistry, Geophysics, Geosystems, 2023
For over 50 years, cores recovered from ocean basins have generated fossil, lithologic, and chemical archives that have revolutionized fields within the earth sciences.
Jocelyn A. Sessa, Andrew J. Fraass, Leah J. LeVay, Katie M. Jamson, Shanan E. Peters   +4 more
doaj   +1 more source