Landscapes and landforms in coarse clastic sedimentary tablelands – Is there a unifying theme?

Migoń, Piotr; Duszyński, Filip

doi:10.1016/j.catena.2022.106545

Cited by 9 publications

(1 citation statement)

References 93 publications

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“…Bimrocks are complex geological materials composed of rock blocks and matrices with different mechanical properties, and have obvious inhomogeneity and anisotropy. These materials such as mélange [ 1 , 2 ], fault breccia [ 3 , 4 ], conglomerate [ 5 ], and lithified colluvium [ 6 ] are inevitable to encounter in engineering. Therefore, it is necessary to understand their strength characteristics and failure behaviors.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Investigation of the Effects of Block Proportion on Bimrocks, Considering Different Block-to-Matrix Strength Ratios

Hu,

Sun,

Sun

et al. 2024

Materials

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The rock block proportion is one of the most important factors affecting the mechanical properties of bimrocks. Under different block-to-matrix strength ratios, the influence of rock block proportion is different. To explore the influence of rock block proportion on the mechanical properties of specimens under different block-to-matrix strength ratios, a new indoor test method for making bimrocks was proposed. A uniaxial compression test and a direct shear test were carried out on specimens with different rock block proportions. The results show that this method can control the block-to-matrix strength ratio well, and the influence of rock block proportion is obviously different under different block-to-matrix strength ratios. The strong matrix sample will decrease significantly after reaching the peak compressive strength, while the weak matrix will decrease slowly after reaching the peak strength. The rock block proportion is negatively correlated with the uniaxial compressive strength of strong matrix samples (the reduction was 12.53%) and is positively correlated with the uniaxial compressive strength of weak matrix samples as a whole, but it changes when block proportion is more than 50%. With the increase in normal stress and rock block proportion increases from 30% to 60%, the shear failure zone of the weak matrix sample increases, and the cracks are inclined, while the strong matrix sample has more secondary cracks. The results of this study also show that the effect of volumetric block proportion (VBP) on the internal friction angle and cohesion of the sample is less related to the block-to-matrix strength ratio.

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Section: Introductionmentioning

confidence: 99%

An Experimental Investigation of the Effects of Block Proportion on Bimrocks, Considering Different Block-to-Matrix Strength Ratios

Hu,

Sun,

Sun

et al. 2024

Materials

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Uvda Valley, Israel—An Interplay of Rock Control, Weathering and Debris Deposition in the Evolution of Hyper-Arid Rock Slopes

Wieler,

Ginat

2024

World Geomorphological Landscapes

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Jabal Al-Qarah, Saudi Arabia—from a Local Tourist Spot and Cultural World Heritage to a Geoheritage Site of Possible Global Relevance

Sen,

Migoń,

Almusabeh

et al. 2023

Geoheritage

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Jabal Al-Qarah in the eastern part of Saudi Arabia is a flat-topped residual hill (mesa) built of calcareous sandstones, mudstones, and marls of Miocene age. It is located within the World Heritage property of Al-Ahsa Oasis, but geoheritage values were not considered in the nomination and remained overlooked. The locality is famous for its systems of maze caves developed along deep fractures by mainly mechanical erosion and wall/roof collapses. They illustrate the origin of non-karstic caves through the action of underground flows, redirected from the surface via sinkholes and open cracks. Hillsides of Jabal Al-Qarah show evidence of various types of mass movements, including spectacular collapses of harder overlying strata after denudation of weaker strata beneath caused loss of vertical support. Thus, the mesa may become a key locality to understand slope development in layered successions and the role of subsurface flows in the global context. The site also has considerable potential to develop geotourism, as an added value to the already recognized cultural assets of the oasis and scenic qualities.

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Landscapes and landforms in coarse clastic sedimentary tablelands – Is there a unifying theme?

Cited by 9 publications

References 93 publications

An Experimental Investigation of the Effects of Block Proportion on Bimrocks, Considering Different Block-to-Matrix Strength Ratios

An Experimental Investigation of the Effects of Block Proportion on Bimrocks, Considering Different Block-to-Matrix Strength Ratios

Uvda Valley, Israel—An Interplay of Rock Control, Weathering and Debris Deposition in the Evolution of Hyper-Arid Rock Slopes

Jabal Al-Qarah, Saudi Arabia—from a Local Tourist Spot and Cultural World Heritage to a Geoheritage Site of Possible Global Relevance

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