Results 171 to 180 of about 279,604 (383)

Geology and geochemistry, Diana Lakes area, western Talkeetna Mountains, Alaska [PDF]

, 1969
R. E. Anderson
openalex   +1 more source

A Comparison of Microdrilling-TIMS/MC-ICPMS and LA-MC-ICPMS for Micro-sample Sr Isotope Measurement

Yankuang ceshi, 2014
Compared to the traditional strontium isotope analytical method, a micro-sample strontium isotope system study can reveal the heterogeneity of analyzed samples and is widely used in various fields of geology, such as crust-mantle interaction, genesis and
ZHANG Le, REN Zhong-yuan, DING Xiang-li, WU Ya-dong, LAI Yong-wang   +4 more
doaj  

Challenges, models, and algorithms for flow and transport simulations in deep reservoirs

Deep Underground Science and Engineering, EarlyView.
Deep reservoirs are considered a promising resource for future energy supply, but current reservoir simulation technologies may face certain challenges if they are directly used in specific scenarios in deep reservoir development. Models and algorithms were developed to resolve these challenges, including a better phase equilibrium model, a better ...
Tao Zhang, Jie Liu, Shuyu Sun
wiley   +1 more source

Fractionation Mechanism and Flux Estimation of Strontium Isotopes During Basalt Weathering

Geochemistry, Geophysics, Geosystems
The fluxes of metal cations and isotopes released by weathering of silicate rocks are crucial and a prerequisite for constraining geochemical fluxes to rivers and oceans.
Kai Luo, Jinlong Ma, Zhibing Wang, Guanhong Zhu, Ti Zeng, Gangjian Wei   +5 more
doaj   +1 more source

Probability prediction of true‐triaxial compressive strength of intact rocks based on the improved PSO‐RVM model

Deep Underground Science and Engineering, EarlyView.
In this work, we propose an improved particle swarm optimization (PSO) algorithm and develop an improved PSO‐relevance vector machine (RVM) model as a substitute for traditional true‐triaxial testing. The model's high prediction accuracy was validated through comparisons with two other machine learning methods and five three‐dimensional Hoek–Brown type
Qi Zhang, Maohui Wang, Ning Wang, Yixin Shen, Xuzhen He   +4 more
wiley   +1 more source

Geochemistry and petrology of the alkalic igneous complex at Magnet Cove, Arkansas [PDF]

, 1963
Ralph Leroy Erickson, Lawrence Vernon Blade   +1 more
openalex   +1 more source

Mechanical property variation mechanisms of granite subjected to real‐time high temperatures and subsequent cooling treatment

Deep Underground Science and Engineering, EarlyView.
This study investigates the coupled thermo‐mechanical behavior of granite during heating and cooling through a combination of laboratory tests and finite element analysis. The thermal conductivity, mineral composition, mass loss rate, micro‐crack observation, and thermal fracture characteristics of granite under various temperature conditions are ...
Rui Pang, Dehao Meng, Thomas Frühwirt, Hao Liu, Yanan Zhao, Qingyou Zhu, Wengang Dang, Mohamed Ismael, Fei Wang   +8 more
wiley   +1 more source

Evolution of mechanical properties of organic-rich shale during thermal maturation

Scientific Reports
Accurate assessment of the mechanical properties of organic matter, clay matrix, and bulk shale during maturation remains a challenge. Here, we aim to assess the mechanical properties of organic-rich shale during maturation using a combination of ...
Jianfeng Wang, Dayong Liu, Jianfei Shi, Chao Yang, Yuke Liu, Guozhi Wang, Huijuan Guo, Peng Liu, Yongqiang Xiong, Ping’an Peng   +9 more
doaj   +1 more source

National Soils Database [PDF]

, 2007
End of project reportThe objectives of the National Soils Database project were fourfold. The first was to generate a national database of soil geochemistry to complete the work that commenced with a survey of the South East of Ireland carried out in ...
Carrigg, Cora, Carton, Owen T., Fay, Deirdre, Grennan, Eamonn J., Kramers, Gaelene, McGrath, David, O'Flaherty, Vincent, Zhang, Chaosheng   +7 more
core  

Quantification of rheological parameters in deep‐sea mining plumes

Deep Underground Science and Engineering, EarlyView.
This study explores the variations in rheological properties observed during the propagation of deep‐sea mining plumes, utilizing rheological test data obtained from kaolin clay plumes. Subsequently, taking into account the differences in sediment properties, the effects of clay content and clay mineral composition on the rheological parameters of ...
Xiaolei Liu, Yihan Liu, Yonggang Jia, Xingsen Guo   +3 more
wiley   +1 more source