pressure welding

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pressure welding The suturing together of grains in a sedimentary rock as the result of pressure dissolution taking place along the grain contact. The sutured margin appears as an irregular plane. Pressure welding of grains is particularly common when a mineral cement has developed at a late stage, after deep burial of the sediment, as this results in the main overburden being supported by the grain-to-grain contacts of the sediment.

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