Results 41 to 50 of about 828 (179)

Thermal‐induced fracture evolution and acoustic signature of Beishan granite: Insights into tensile strength of barrier system for high‐level radioactive waste disposal

Deep Underground Science and Engineering, EarlyView.
The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng, Shijie Li, Xiaozhao Li, Zhen Huang, Shangtong Yang, Wentao Xu, Biao Wang, Yun Wu   +7 more
wiley   +1 more source

Mid-Cretaceous Accelerated Cooling of the Beishan Orogen, NW China: Evidence from Apatite Fission Track Thermochronology [PDF]

Lithosphere
The Beishan orogen, a significant component of the southern Altaids, presents an opportunity for investigating the intracontinental deformation and exhumation history of the Altaids during the Mesozoic era.
Fujun Wang, Meng Luo, Zhiyuan He, Yiqiong Wang, Bihai Zheng, Zhiyong Zhang, Xiao Hu, Wenbin Zhu   +7 more
doaj   +1 more source

Upper lower Cambrian (provisional Cambrian Series 2) trilobites from northwestern Gansu Province, China [PDF]

Estonian Journal of Earth Sciences, 2014
Upper lower Cambrian (provisional Cambrian Series 2) trilobites are described from three sections through the Shuangyingshan Formation in the Beishan area, northwestern Gansu Province, China. The trilobite fauna is dominated by eodiscoid and corynexochid
Jan Bergström†, Zhou Zhiqiang, Per Ahlberg, Niklas Axheimer   +3 more
doaj   +1 more source

Effect of stress condition on the creep behaviour of Beishan granite

IOP Conference Series: Earth and Environmental Science, 2020
Abstract In China, a deep granite formation in Beishan area is currently considered as a potential host rock for high-level radioactive waste repositories. Creep tests were conducted by two modes, namely single step loading mode on several samples and multi-step loading mode on single sample.
Wang Chunping, Liu Jianfeng, Liu Jian
openaire   +1 more source

Alpine Secondary Forest Types Influence Soil Microbial Community Structure and Enzyme Activities on the Eastern Qinghai–Tibet Plateau

Land Degradation &Development, Volume 37, Issue 14, Page 10107-10126, 30 August 2026.
ABSTRACT Soil microbial communities and enzyme activities influence soil functions and tree growth in ecologically fragile alpine regions. However, differences in soil microbial communities among secondary forests remain poorly understood in the Qinghai–Tibet Plateau.
Qiuyun Fan, Ruoqi Zhang, Yuqing Geng, Yaning Luan, Yuhai Zhang, Yali Yuan   +5 more
wiley   +1 more source

Experimental and Numerical Study on Mechanical Properties and Deformation Behavior of Beishan Granite considering Heterogeneity

Advances in Civil Engineering, 2021
Disposal of high-level radioactive waste (HLW) deep underground is one of the most challenging research subjects in rock engineering. In China, Beishan granite is usually chosen as host rock for the construction of the HLW repository.
Z. H. Wang, Y. L. Tan, S. M. Li, T. Z. Wang, X. C. Wu   +4 more
doaj   +1 more source

Early–Late Carboniferous Tectonic Evolution of the Northern North China Craton (NE China): Constraints From Zircon Ages, Geochemistry, and Crustal Thickness Modeling

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract The tectonic evolution of the northern margin of the North China Craton (NCC) remains controversial. In this study, we obtained zircon U–Pb ages, geochemical data, and Sr–Nd isotopic data for volcanic rocks, and detrital zircon ages for sedimentary rocks from the Yufutun, Tongqigou, and Benxi formations in central‐southern Jilin Province, NE ...
Yunfei Chang, Qingxiang Du, Huachun Gan, Xiaoli Shen, Zuozhen Han, Xiaoxue Hou, Huicong Zhang   +6 more
wiley   +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, Volume 5, Issue 2, Page 396-409, June 2026.
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

Final Amalgamation Processes of the Southern Altaids: Insights from the Triassic Houhongquan Ophiolitic Mélange in the Beishan Orogen (NW China)

Lithosphere, 2023
The Permian–Triassic tectonic setting is still controversial in the southern Altaids. The Beishan orogen is an ideal region to address the final tectonic of the Altaids. These systematic mapping, geochemistry, and geochronology studies on the Houhongquan
Qigui Mao, Wenjiao Xiao, Songjian Ao, Dongfang Song, Miao Sang, Zhou Tan, Hao Wang, Rui Li, Meng Wang   +8 more
doaj   +1 more source

Numerical Modeling of Purely Active (Plume‐Produced) Continental Rifting and Break‐Up

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract In contrast to the traditional mechanism of passive continental rifting (driven by far‐field tectonic forces), the active rifting‐to‐break‐up processes (caused by rising mantle plumes) are still poorly understood. However, most episodes of fragmentation of the last supercontinent Pangea were relatively shortly preceded (within ∼10 Myr) by the ...
Alexander Koptev, Alessio Lavecchia, Sierd Cloetingh, Michaël Pons, Enrico Marzotto, Sascha Brune, István Kovács, Magdala Tesauro, Fred Beekman, Qin Wang, Stephan V. Sobolev, Claudio Faccenna, Laurent Jolivet   +12 more
wiley   +1 more source