Results 21 to 30 of about 147,175 (375)

Nyexon Rock Avalanches: A Special Intrusion Restraint Mechanism, Tibet, China

open access: yesFrontiers in Earth Science, 2022
The Nyexon Rock Avalanches in the southern Qinghai-Tibet Plateau is a huge scale earthquake-induced slope disaster in the Holocene, the accumulation area has distinct sedimentological characteristics, which is of great significance for studying the ...
Jie Cui   +7 more
doaj   +1 more source

Groundwater Potential Assessment of the Sedimentary and Basement Complex Rocks of Ogun State, Southwestern Nigeria

open access: yesJournal of Water and Environment Technology, 2022
Seventy borehole data were used to appraise the groundwater resources of the sedimentary and Basement Complex rock terrains of Ogun State, Nigeria.
Owolabi Ajayi   +2 more
doaj   +1 more source

Organic matter of sediments of South Chukotka [PDF]

open access: yesE3S Web of Conferences, 2020
The article discusses data on paleosol, mineralogy, and paleobotany obtained as a result of studying material collected from the Maastricht-Early Paleocene sediments of the Tanyurer Formation of South Chukotka.
Aparin Boris   +8 more
doaj   +1 more source

Simulation of diffusive solute transport in heterogeneous porous media with dipping anisotropy

open access: yesFrontiers in Water, 2022
Dipping anisotropy is a common feature in heterogeneous porous media that can substantially affect solute transport. For problems with complex geometry the influence of dipping anisotropy must be analyzed using numerical models, since suitable analytical
Danyang Su   +3 more
doaj   +1 more source

Two-End-Member Mixing in the Fluids Emitted From Mud Volcano Lei-Gong-Huo, Eastern Taiwan: Evidence From Sr Isotopes

open access: yesFrontiers in Earth Science, 2022
Mud volcano is one of the most important conduits for deep seated materials to migrate upward in sedimentary basins, convergent margins, and subduction zones.
Hung-Chun Chao   +9 more
doaj   +1 more source

Structural-mineralogical alterations of sandstones in rock-water and rock-water-oil systems within oil-water contact [PDF]

open access: yesE3S Web of Conferences, 2019
Structural-mineralogical alterations of sandstones under conditions of natural water-oil interaction within Jurassic sedimentary sequences in south-eastern Nurolsk sedimentary basin (Tomsk Oblast, Western Siberian, petroleum province) depend on their ...
Nedolivko Natalya
doaj   +1 more source

Discussion on classification and naming scheme of fine-grained sedimentary rocks

open access: yesPetroleum Exploration and Development, 2022
Based on reviews and summaries of the naming schemes of fine-grained sedimentary rocks, and analysis of characteristics of fine-grained sedimentary rocks, the problems existing in the classification and naming of fine-grained sedimentary rocks are ...
Jun PENG   +4 more
doaj  

Constraints of sedimentary environment on phosphorization of phosphorus-bearing rock series in the Xinhua Gezhongwu Formation, Zhijin County, Guizhou Province

open access: yes地质科技通报, 2023
Objective The Early Cambrian superlarge rare earth-rich phosphate deposit in Xinhua, Zhijin County, Guizhou Province, is a typical marine sedimentary deposit.
Yuhang Wang   +6 more
doaj   +1 more source

Soil Depth Prediction Model Using Terrain Attributes in Gangwon-do, South Korea

open access: yesApplied Sciences, 2023
Soil depth is a crucial parameter in slope stability analysis in mountainous areas. The drilling survey is the most reliable method for determining soil depth, but it requires a high cost for the vast geographical area.
Jinwook Kim, Hosung Shin
doaj   +1 more source

Strength and energy consumption of inherently anisotropic rocks at failure [PDF]

open access: yes, 2021
Using a discrete-element approach and a bonding interaction law, we model and test crushable inherently anisotropic structures reminiscent of the layering found in sedimentary and metamorphic rocks. By systematically modifying the level of inherent anisotropy, we characterize the evolution of the failure strength of circular rock samples discretized ...
arxiv   +1 more source

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