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Zhao Ma, Junjie Ye, Xin Zhang and Wenhua Ye
To analyze the rock-breaking characteristics of an arcing-blade cutter in cutting red sandstone, a two-cutter cutting model was established based on the finite element method. Then, the cutting processes of the arcing-blade cutter at penetrations of 2 mm...
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Carlos Oscar Limarino,Leonardo R. Scarlatta,Patricia L. Ciccioli,Sabrina Miyno,Fanny Bello,Silvia N. Césari
Pág. 127 - 149
The La Veteada Formation, in the Sierra de Famatina (west of Argentina), is one of the few records of Early Triassic age in South America verified by isotopic age and palynological assemblages. This unit is composed of sandstones, mudstones, shales, lime...
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José Alfredo Flores Ronces, Edith R. Salcedo Sánchez, Manuel Martínez Morales, Juan Manuel Esquivel Martínez, Oscar Talavera Mendoza and María Vicenta Esteller Alberich
The Taxco mining district is a well-known international producer of silver, jewelry, and precious metal handicrafts. Inappropriate disposal wastes from anthropogenic activities have been deteriorating the hydric resources and threatening the inhabitants?...
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Yongjian Zhu, Peng Li, Ping Wang, Chengcheng Mei, Heng Ren and Xizhi Wang
The mining of deep coal resources occurs in a high-stress geological environment as well as an engineering environment of rock excavation and unloading. Research on the re-bearing capacity characteristics and damage mechanism of rock masses damaged by pe...
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Morten Smelror
Palynostratigraphy and palynofacies analyses are applied to identify transgressive-regressive sequences and changes in paleoenvironment through the Middle Jurassic?Early Cretaceous succession of the Ramså Basin on Andøya. The conglomerate, the succeeding...
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Ibrahim M. Ghandour, Hamad A. Al-Washmi, Athar A. Khan, Ammar A. Mannaa, Mohammed H. Aljahdali and Brian G. Jones
This study utilizes lithofacies characteristics, petrographic, XRD, and stable isotope data of Al-Mejarma beachrocks, Red Sea, Saudi Arabia, to interpret its depositional setting, origin of cement, and coastal evolution. The beachrock is 1.15 m thick, me...
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Zhen Liu, Xinfu He, Guangjun Cui and Cuiying Zhou
The rates of chemical reactions are highly dependent on temperature, meaning that the actual geological rock mass is affected by different temperatures. Only when the temperature effect is considered can the mechanism of the influence of temperature on t...
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Zhen Liu, Xinfu He and Cuiying Zhou
As a typical representative of red beds, the softening and disintegration of red sandstone when it encounters water is an important cause of initiated engineering disasters. However, research on the softening of this kind of rock has mainly focused on th...
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Lingtao Mao, Haizhou Liu, Ying Zhu, Ziyan Zhu, Rui Guo and Fu-pen Chiang
Digital volumetric speckle photography (DVSP) method has been used to strain investigation in opaque materials. In this paper, an improved DVSP algorithm is introduced, in which a multi-scale coarse?fine subset calculation process and a subvoxel shifting...
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Cuiying Zhou, Xu Yang, Yanhao Liang, Zichun Du, Zhen Liu, Wei Huang and Weihua Ming
Red beds are Meso?Cenozoic continental sedimentary strata that are mainly composed of gravel stone, sandstone, siltstone, mudstone, and shale and occasionally have interlayers of limestone, halite, and gypsum. As a typical rock mass, red beds are widely ...
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