Geometric Attributes of Polygonal Crack Patterns in Columnar Joints
نویسندگان
چکیده
منابع مشابه
Evolving fracture patterns: columnar joints, mud cracks and polygonal terrain.
When cracks form in a thin contracting layer, they sequentially break the layer into smaller and smaller pieces. A rectilinear crack pattern encodes information about the order of crack formation, as later cracks tend to intersect with earlier cracks at right angles. In a hexagonal pattern, in contrast, the angles between all cracks at a vertex are near 120 degrees. Hexagonal crack patterns are...
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Order and disorder in columnar joints
– Columnar joints are three-dimensional fracture networks that form in cooling basalt and several other media. The network organizes itself into ordered, mostly hexagonal columns. The same pattern can be observed on a smaller scale in desiccating starch. We show how surface boundary conditions in the desiccation of starch affect the formation of columnar joints. Under constant drying power cond...
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ژورنال
عنوان ژورنال: Earth and Space Science
سال: 2021
ISSN: 2333-5084,2333-5084
DOI: 10.1029/2020ea001457