Results 41 to 50 of about 47,954 (161)

Plagioclase Zoning and Sr Isotopes Constrain Mush–Magma Mixing in the Late Triassic Xiuyan Granitic Pluton, East China

Geosciences
Mafic microgranular enclaves (MMEs) are widespread in granitic plutons and provide valuable insights into mush–magma mixing processes in crustal magma reservoirs.
Zisong Zhao, Shengwei Wu, Fucheng Yu, Shanping Li, Zhiyi Zhao   +4 more
doaj   +1 more source

Deep gold mineralization features of Jiaojia metallogenic belt, Jiaodong gold Province: Based on the breakthrough of 3000 m exploration drilling

China Geology, 2020
: Recently, continuous breakthroughs have been made about deep gold prospecting in the Jiaodong gold province area of China. Approximately 5000 t of cumulative gold resources have been explored in Jiaodong, which has thus become an internationally ...
Xue-feng Yu, Da-peng Li, Jing-xiang Tian, De-ping Yang, Wei Shan, Ke Geng, Yu-xin Xiong, Nai-jie Chi, Peng-fei Wei, Peng-rui Liu   +9 more
doaj   +1 more source

Effects of Confinement on Reaction‐Induced Fracturing During Hydration of Periclase

Geochemistry, Geophysics, Geosystems, 2018
Hydration of a nominally dry rock can cause expansion of the solid volume, resulting in reaction‐induced fracturing and an associated increase in the porosity and permeability of the rock. We study the effect of confinement on the coupling between stress
Xiaojiao Zheng, Benoît Cordonnier, Wenlu Zhu, François Renard, Bjørn Jamtveit   +4 more
doaj   +1 more source

Groundwater in Geologic Processes

Eos, Transactions American Geophysical Union, 2000
Any student of geology who inspects a sample of galena or fluorite from one of the lead‐zinc mines of the Mississippi Valley Ore district will be immediately struck by the hydrologic processes that were required to concentrate the requisite far‐flung chemical components into a relatively thin layer of limestone.
openaire   +1 more source

Submarine fresh groundwater discharge estimation in the intertidal zone based on dynamic salinity simulation

Shuiwen dizhi gongcheng dizhi
Currently, limited studies focused on the variations in submarine fresh groundwater discharge rates, seawater recirculation rates, and their respective proportions with tidal level change in sandy intertidal zones.
Zhixiu WANG, Yasong LI, Qichen HAO, Yuanjing ZHANG, Yong XIAO, Chunlei LIU   +5 more
doaj   +1 more source

Recognizing spatial geochemical anomaly patterns using deformable convolutional networks guided with geological knowledge [PDF]

Geoscientific Model Development
This study tackles the limited quantification of irregular spatial geochemical anomaly patterns and weak interpretability in deep learning models in geochemical anomaly recognition.
X. Zhang, Y. Xiong, Z. Chen
doaj   +1 more source

Development of perennial thaw zones in boreal hillslopes enhances potential mobilization of permafrost carbon

Environmental Research Letters, 2019
Permafrost thaw alters subsurface flow in boreal regions that in turn influences the magnitude, seasonality, and chemical composition of streamflow. Prediction of these changes is challenged by incomplete knowledge of timing, flowpath depth, and amount ...
Michelle A Walvoord, Clifford I Voss, Brian A Ebel, Burke J Minsley   +3 more
doaj   +1 more source

Vertical Seismic Profile Wavefield Separation Using Median Filtering Constrained by the Linear Radon Transform

Applied Sciences, 2018
Separation of downgoing and upgoing P-waves and S-waves in an offset 2D/3D vertical seismic profile (VSP) record is a basic step in VSP data processing. Radon transform and median filtering methods are commonly used to separate wavefields.
Yuyong Yang, Jun Lu, Yun Wang
doaj   +1 more source

High-temperature wood silicification: constraints from fluid and carbonaceous inclusions in quartz from Qitai, NW China

Scientific Reports
Silicified wood serves as a crucial geological archive, recording significant information about palaeoenvironment, palaeoecology, palaeontology and diagenetic conditions.
Wenqing Liu, Guanghai Shi, Zhiguang Zhou, Linli Qin, Xinling Li, Xiaoyun Quan, Ye Yuan, Tobias Häger, Anne Jantschke, Roman Botcharnikov   +9 more
doaj   +1 more source

Geological processes mediate a microbial dispersal loop in the deep biosphere. [PDF]

Sci Adv, 2022
Gittins DA, Desiage PA, Morrison N, Rattray JE, Bhatnagar S, Chakraborty A, Zorz J, Li C, Horanszky O, Cramm MA, Bisiach F, Bennett R, Webb J, MacDonald A, Fowler M, Campbell DC, Hubert CRJ.   +16 more
europepmc   +1 more source