Results 91 to 100 of about 75,703 (288)

New Schmidt hammer exposure‐age dating calibrations for the Last Glacial Termination in NW Scotland: Development and application to undated Torridon Group sandstone surfaces in Wester Ross

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT An understanding of the terrestrial extent, retreat dynamics and climate–glacier coupling of ice masses during the Last Glacial Termination (LGT, ~18–11 ka) is often limited by a fragmentary geomorphological record and is dependent on precise, accurate and robust dating frameworks.
Alastair M. Curry   +3 more
wiley   +1 more source

Thermal Damage Characterization and Modeling in Granite Samples Subjected to Heat Treatment by Leveraging Machine Learning and Experimental Data

open access: yesApplied Sciences
High temperatures significantly affect the physical and mechanical properties of rocks in deep geoengineering projects, such as geothermal development, deep mining, and the geological disposal of nuclear waste.
Gabit Sansyzbekov   +2 more
doaj   +1 more source

Mineral Chemistry of Chlorite Replacing Biotite from Granitic Rocks of the Canadian Appalachians [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2009
Chlorite flakes, as a product of alteration of biotite, the dominant ferromagnesian mineral in the Paleozoic granitic rocks of the Canadian Appalachians, have been analyzed by electron microprobe for major elements and by 57Fe M?ssbauer spectroscopy for ...
A.A. Tabbakh Shabani
doaj  

A Study on the Distribution Characteristics of Salinity and Nutrients and the Migration Mechanism of Soil Salt in the Delingha Saline‐Alkali Soil Profile of the Qaidam Basin

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Soil salinization negatively impacts the economic development and ecological environment, particularly in the arid and semiarid regions of China. The Qaidam Basin constitutes a major distribution area of saline‐alkali land in the country. However, the distribution patterns of salinity and nutrients within soil profiles and the underlying salt ...
Hongpan Xue   +8 more
wiley   +1 more source

Experimental Investigations of Dynamic Response and Fatigue Damage Characteristics of Granite Under Multi-Level Cyclic Impacts

open access: yesApplied Sciences
Dynamic fatigue of rocks under repeated cyclic impact is a nonconservative property, as surrounding rocks in real environments subjects them to variable impact disturbances, and the degree of damage varies under different energy level loads.
Jiaming Yang   +4 more
doaj   +1 more source

Corrosion of Potential Canister Materials During Oxic to Anoxic Transient in Compacted Bentonite

open access: yesMaterials and Corrosion, EarlyView.
A comprehensive analytical approach was applied to investigate material degradation phenomena of cast iron and copper as potential canister materials for the safe disposal of high‐level radioactive waste, as well as compacted bentonite exposed to artificial water relevant for disposal. ABSTRACT The long‐term performance of the engineered barrier system
Louisa Panjiyar   +3 more
wiley   +1 more source

Experimental Study on the Pre-Peak Mechanical and Seepage Characteristics of Granite

open access: yesApplied Sciences
The Sanshandao Gold Mine is currently in the deep mining stage. The ground pressure on the surrounding rocks is gradually becoming more considerable, and at the same time, threatened by the overlying seawater, the possibility of mine water inrush ...
Xinyan Zeng   +3 more
doaj   +1 more source

Particle‐Scale Mechanics of a Regolith‐Type Soil

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT The existing studies have reported that the surface of Mars shows the presence of materials having igneous origin, including basalt and regolith‐type coarse soils. These findings are affected by significant uncertainties and, therefore, the selection of simulants for various exploration applications, including surface mobility of rovers ...
Vincenzo Nardelli   +2 more
wiley   +1 more source

Aerial View of Dakota Granite Quarry, 48391 150th Street, Milbank SD, Grant County

open access: yes, 1958
5 x 7 photograph, aerial view of the surface mine, buildings and roadsTowns Madison - Miller P22 Poster board Milbank, S.D. [stamp] Property of South Dakota State Historical Society Pierre, South Dakota.

core  

Forensic Hydraulic Analysis of Floodplain Connectivity Driven by Historical Beaver Dams in Colorado Headwater Streams

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT As ecosystem engineers, beavers (Castor canadensis) modify river corridor form through dam building. When beavers are removed from a river corridor, their unmaintained dams wash out, altering the stream's hydrologic regime. The assumption that beaver dams increase floodplain connectivity is frequently presumed but has not been directly ...
Kayla Schultz   +4 more
wiley   +1 more source

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