Results 171 to 180 of about 2,510,503 (352)

Geological map [cartographic material] /

open access: yes, 1958
Relief shown by hachures and spot heights.; Map of Western Samoa showing geological features.; Includes index to adjoining sheets.; "C.T. Webb, chief draughtsman"; Also available online http://nla.gov.au/nla.map-vn2145434. No. 1. Savai'i -- No.
New Zealand Geological Survey.
core   +1 more source

United States Geological Survey Report TEI-690

open access: yes, 1957
The following report is a statement of the Geological Survey's progress on the investigation of the fundamental geology, mineralogy, and geochemistry of uranium and other radioactive materials with the intention of discovering and delimiting areas ...
Geological Survey (U.S.)
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Analytical stress solution framework for lined compressed air energy storage chambers and its application to safe burial depth determination and supporting effectiveness evaluation

open access: yesDeep Underground Science and Engineering, EarlyView.
An analytical framework delivers a closed‐form stress solution for lined compressed air energy storage chambers, enabling the determination of the minimum safe burial depth. The solution quantitatively evaluates lining support effectiveness, offering a reliable tool for chamber design and optimization.
Zeyuan Sun   +3 more
wiley   +1 more source

Geological Survey of Victoria. No. 9 [cartographic material]

open access: yes
Caption title.; Quarter sheet 9SW is a geological map of mountains encroaching on flat lands between the parish of Holcombe and the parish of Burke with cadastral details. Kangaroo Hill and Snowdon Hill can be seen to the right of bottom centre. Includes
Geological Survey of Victoria.
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Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

open access: yesDeep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu   +4 more
wiley   +1 more source

Geological Survey of Victoria. No. 4 [cartographic material]

open access: yes
Quarter sheet 4SW is a geological map centred on the town of Kilmore, Vic. with some cadastral details. Parishes on the map include Glenburnie, Forbes and Bylands in the counties of Bourke and Dalhousie. Includes five geological notes in top left margin.
Geological Survey of Victoria.
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Shock wave propagation characteristics of aluminum‐containing explosive in corrugated steel‐lined tunnel

open access: yesDeep Underground Science and Engineering, EarlyView.
Aluminum‐enhanced afterburning renders AE explosives more hazardous than conventional ones. Corrugated steel linings reduce far‐field AE blast overpressure by ~50% through wave reflection and dissipation. The developed model accurately predicts peak pressure (<10% error) and arrival time (<3% error), supporting protective design.
Zhen Wang   +5 more
wiley   +1 more source

A Study of Geological Hazards Lability Zoning Based on GIS in Lingtai County of Gansu Province

open access: yesShuitu baochi yanjiu, 2010
According to the comprehensive analyses of the geological hazards survey data in Lingtai County,Gansu Province,using disturbance coefficient method generates a primary geological hazards lability zoning map. Using the spatial analysis software MAPGIS 6.7
DING Wei-cui1   +3 more
doaj  

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

open access: yesDeep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu   +8 more
wiley   +1 more source

United States Geological Survey, Earthquake Hazards Program: Earthquake Research

open access: yes
This site describes the research activities of the Earthquake Hazards Program (EHP) of the United States Geological Survey (USGS). The activities include: borehole geophysics and rock mechanics, crustal deformation, earthquake information, earthquake ...

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