Results 251 to 260 of about 134,743 (297)

Patterns to ores in layered rocks

Economic Geology, 1961
Takes exception to a recently published interpretation of the Basal Reef in the Orange Free State gold field (South Africa) as a stream deposit, pointing out that these and adjacent beds of the upper Witwatersrand sequence are all of blanket type and exhibit features characteristic of the basal conglomerates of a transgressing sea.
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Significance of Layer-Parallel Slip During Folding of Layered Sedimentary Rocks

Geological Society of America Bulletin, 1974
The Greenport Center syncline is an asymmetric fold with a half wave length of about 40 m developed in the Devonian Becraft and Alsen Limestones on Becraft Mountain, New York. Twinning strains have been measured in 19 samples distributed so as to sample all of the structurally significant regions of the fold.
WILLIAM M. CHAPPLE, JOHN H. SPANG
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Glacial Erosion in Tilted Rock Layers

The Journal of Geology, 1955
Isle Royale in Lake Superior and the Rove area of northeastern Minnesota have valley and ridge topographies controlled by bands of massive, poorly jointed rock, alternating with highly jointed rock units. The ridges are asymmetrical in cross section, with gentle dip slopes on one side and precipitous antidip slopes on the other.
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Strain localization mechanisms in deep-seated layered rocks

Geologische Rundschau, 1997
More than 160 shear zones of the Norwegian Caledonides and Italian Southern Alps, formed under high-temperature or high-pressure conditions, are analysed with respect to mechanisms of strain localization. In metabasic rocks with a pre-existing (magmatic) layering strain localizes preferentially in mafic layers, although experiments in monomineralic ...
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Textural Equilibrium in Layered Igneous Rocks

1987
Rocks of many layered intrusions, adcumulate rocks in particular, are in local textural equilibrium; the shape and contiguity of grains are controlled by surface energies. Existing cumulus theory takes no account of the effects of surface energy in determining the textures which form in layered intrusions.
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Dynamic mechanical properties and wave propagation of composite rock-mortar specimens based on SHPB tests

International Journal of Mining Science and Technology, 2022
Zhenyu Han
exaly  

Layered igneous rocks

Chemical Geology, 1970
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Rock brittleness indices and their applications to different fields of rock engineering: A review

Journal of Rock Mechanics and Geotechnical Engineering, 2021
Fanzhen Meng, Louis Ngai Yuen Wong
exaly  

Experimental study on the mechanical and failure behaviors of deep rock subjected to true triaxial stress: A review

International Journal of Mining Science and Technology, 2022
Heping Xie, Jun Lu, Cunbao Li
exaly  

Cumulates and Layered Igneous Rocks

2021
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