Results 141 to 150 of about 9,629,822 (348)
Characterization of bentonite clay from “Greda” deposit [PDF]
Processing and Application of Ceramics, 2011 Based on mineralogical and technological investigations of the deposit “Greda” important characteristics of bentonite clay were determined. Representative samples of the deposit were characterized with X-ray diffraction, low-temperature nitrogen ...
Nadežda Stanković +6 more
doaj
The Sydney duricrusts: their terminology and nomenclature [PDF]
, 1970 Two main duricrust types - laterites and ferricretes - and their underlying materials are mapped and described for the northern parts of the Sydney district, New South Wales.
Faniran, Adetoye
core +1 more source
Deep Underground Science and Engineering, EarlyView.This study highlights that with the static and time‐dependent evolution of slip versus dilation tendency parameter space, structurally controlled deep geothermal systems can be selected within areas of higher permeability and lower seismic hazard. Abstract Faults play a vital role in the Earth's hydraulic system by facilitating fluid flow when dilating
Michal Kruszewski +4 more
wiley +1 more source
Measurements of the scattering characteristics of sediment suspensions with different mineralogical compositions [PDF]
, 2009 Acoustic studies of suspended sediments often assume the dominant mineral in suspension is quartz, the density and intrinsic scattering properties of which are implemented when inverting acoustic backscatter data collected at sea.
Moate, Benjamin D., Thorne, Peter D.
core
Deep Underground Science and Engineering, EarlyView.This study investigates ground subsidence during tunnel excavation in karst areas, highlighting the combined effects of karst cave proximity, cave size, and soil spatial variability. Findings suggest that shorter cave distances and larger cave sizes increase subsidence variability, and a modified Peck formula is proposed for more accurate subsidence ...
Zhenghong Su +4 more
wiley +1 more source
Mineralogical and Gemological Characteristics and Color Genesis of Zibai Jade
CrystalsZibai Jade is a recently identified hydrogrossular-dominant jade originating from Shaanxi Province, China. It constitutes a polymineralic aggregate composed predominantly of hydrogrossular, with minor proportions of vesuvianite, diopside, chlorite ...
Linhui Song +3 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.Triaxial compression tests under unloading confining pressure conditions were conducted to systematically analyze the permeability behavior of granite retrieved from the different classification surrounding rocks. Abstract The rock mass within mountain tunnels undergoes complex changes in permeability, strength, and deformation during tunneling ...
Xiaoyan Zhang +4 more
wiley +1 more source
Mineralogical and Spectroscopic Characteristics of Turquoise from Duancengshan, Qinghai Province
Yankuang ceshiThe Duancengshan turquoise mine in Qinghai is an ancient mining site discovered in the northwestern region. Situated in the central distribution zone of Chinese turquoise resources and adjacent to the Tang–Xizang Ancient Road, this mining area holds ...
Xueli WANG +4 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.In the process of water‐soluble cavern construction of salt cavern energy storage, since the interlayer does not dissolve in water easily, sudden collapse will cause engineering accidents such as bending and damage of the inner tube of the cavern.
Zenghui Zhao +5 more
wiley +1 more source
An Integrated XRF/XRD Instrument for Mars Exobiology and Geology Experiments [PDF]
By employing an integrated x-ray instrument on a future Mars mission, data obtained will greatly augment those returned by Viking; details characterizing the past and present environment on Mars and those relevant to the possibility of the origin and ...
Fonda, M. L. +5 more
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