Microclimatic, chemical, and mineralogical evidence for tafoni weathering processes on the Miaowan Island, South China

Huang, Rihui; Wang, Wei

doi:10.1016/j.jseaes.2016.11.023

Cited by 17 publications

(3 citation statements)

References 31 publications

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“…Aside from the collapsed blocks, other slope features attest to the structural control, such as the collapse tafone (CT), observed in the NE peak of Pedra da Galinha. Although solution and chemical weathering are acknowledged processes in the widening of cavities (Mellor et al, 1997;Huang and Wang, 2017), tafoni are polygenetic features. It was recently demonstrated that brittle structures and discontinuities in granites control the formation or initiation of cavities on rock slopes (Maia et al, 2022) and that these forms tend to maintain the orientation and dimensions of fracture planes that control their formation (Eppes, 2022).…”

Section: Discussionmentioning

confidence: 99%

Inselbergs shaped by collapse: considerations on the structural control on granitic scarps

Maia,

Souza

2024

RBGeomorfologia

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Inselbergs characterised by fracturing features correspond to the geomorphological manifestation of break-up of the rock mass and collapse. The steep slopes partially covered by angular boulders scattered chaotically reveal, in evolutionary terms, the predominance of the morphostructural controls, given by the presence of veins/dikes, sheeting joints, and vertical fractures. These structural planes in turn create anisotropies guiding fracturing directions and rockfall. In this work, we propose a model of geomorphological evolution of granitic inselbergs subjected to a structural propensity to fracturing. For this purpose, we analysed the Pedra da Galinha Choca inselberg (PGC) and Pedra Faladeira (Quixadá, NE of Brazil) inselbergs, whose morphologies attest to mechanical disintegration processes. Data extraction and interpretation were based on fieldwork and UAV photogrammetry, which provided products such as high-resolution models, orthomosaic, and DEM. Networks of multidirectional fractures were observed to promote an arrangement of interlocking blocks, allowing the maintenance of steep slopes (>60°), in which solutional features tend to be incipient due to the structural instability promoting collapse. Thus, the main features on the hillslopes are cavities like collapse tafone (CT) and large collapsed boulders (LCB). As a result of this structural setting, the inselberg displays sharp outlines, steep slopes, and wide talu deposits.

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Section: Discussionmentioning

confidence: 99%

Inselbergs shaped by collapse: considerations on the structural control on granitic scarps

Maia,

Souza

2024

RBGeomorfologia

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“…Collectively, the main factors that control and influence tafoni development are microclimatic changes, salt weathering, and valley wind erosion [7]. Valley wind erosion is a physical weathering and salt weathering is a chemical weathering.…”

Section: Simulation Algorithm Of Weathering Processmentioning

confidence: 99%

“…Physical weathering is accomplished by valley wind erosion [7]. Physical weathering is the same process in three types: point, line, and surface.…”

Section: Physical Weatheringmentioning

confidence: 99%

Simulation Algorithm Based on Weathered Rock Morphology and Optimization Algorithm for Design Applications

Ye¹,

Zhao²,

Xu³

2023

Computational Design and Robotic Fabrication

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The rich organic pore spaces of weathered rocks bring inspiration to architectural design. Based on the existing research on the natural formation mechanism of weathered rocks, this paper proposes two algorithms that achieve natural formation mechanism simulation and morphology simulation. Firstly, this study deeply explores the intrinsic characteristics of weathered rocks; secondly, the basic framework of iterative cyclic calculation by multiple weathering forces is built to make the calculation results of 3D point cloud close to the real morphology of weathered rocks; subsequently, this study innovatively introduces a 2D stacked layer algorithm for optimization while maintaining the morphological characteristics; finally, the architecture design application of the optimization algorithm is verified. Compared with the 3D point cloud simulation algorithm, the 2D layered algorithm can greatly reduce the computational time complexity and control the generated space's utilization.

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Origin of beaded tafoni in cliffs of Danxia landscapes, Longhushan Global Geopark, South China

Guo

Chen

et al. 2018

J. Mt. Sci.

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Microclimatic, chemical, and mineralogical evidence for tafoni weathering processes on the Miaowan Island, South China

Cited by 17 publications

References 31 publications

Inselbergs shaped by collapse: considerations on the structural control on granitic scarps

Inselbergs shaped by collapse: considerations on the structural control on granitic scarps

Simulation Algorithm Based on Weathered Rock Morphology and Optimization Algorithm for Design Applications

Origin of beaded tafoni in cliffs of Danxia landscapes, Longhushan Global Geopark, South China

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