Results 21 to 30 of about 845,998 (325)

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

Surface and subsurface engineering geological mapping for empirical designs of excavation method and support system of Tunnel 6 of Jakarta-Bandung high speed railway, Indonesia [PDF]

open access: yesE3S Web of Conferences, 2021
Empirical design of support system at the Tunnel 6 of the Jakarta – Bandung high-speed railway was based on the Basic Quality (BQ) system, which had not been adopted in Indonesia.
Malda Octavika   +2 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

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

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

A new stylolite classification scheme to estimate compaction and local permeability variations [PDF]

open access: yes, 2017
This study was carried out within the framework of DGMK (German Society for Petroleum and Coal Science and Technology) research project 718 “Mineral Vein Dynamics Modeling”, which is funded by the companies ExxonMobil Production Deutschland GmbH, GDF ...
Beaudoin, Nicolas   +5 more
core   +1 more source

Seismic models for near-surface explosion yield estimation in alluvium and sedimentary rock

open access: yes, 2018
Author(s): Templeton, DC; Rodgers, AJ; Ford, SR; Harben, PE; Ramirez, AL; Foxall, W; Reinke, RE | Abstract: © 2018, Seismological Society of America. All rights reserved.
D. Templeton   +6 more
semanticscholar   +1 more source

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