Shock metamorphism - Wikipedia
Shock metamorphism or impact metamorphism describes the effects of shock-wave related deformation and heating during impact events.
10.4: Types of Metamorphism and Where They Occur
2024年8月22日 · Shock Metamorphism. When extraterrestrial objects hit Earth, the result is a shock wave. Where the object hits, pressures and temperatures become very high in a fraction of a second. A “gentle” impact can hit with 40 GPa and raise temperatures up to 500 °C.
Shock Metamorphism • GeoLearning • Department of Earth …
Shock metamorphism exclusively occurs locally around impact craters and possibly around some diatremes. It is characterized by extremely high P/T conditions (tens of hundred of kilobars) over very short time spans. These conditions result from …
8.1.5: Impact Metamorphism - Geosciences LibreTexts
2022年8月28日 · Impact metamorphism, also called shock metamorphism, is related to dynamic metamorphism because it also involves physical changes involving crushing and deformation. This kind of metamorphism occurs when a meteorite impacts Earth.
Shock Metamorphism - Encyclopedia.com
2018年5月23日 · Shock metamorphism involves changes wrought by instantaneously applied extreme pressure and heat. This contrasts sharply with metamorphic changes accompanying development of most of Earth's metamorphic crustal rocks via long-term contact, cataclastic, and regional metamorphic conditions.
Meteorite shock stage - Wikipedia
Meteorite shock stage is a measure of the degree of fracturing of the matrix of a common chondrite meteorite. [1] . Impacts on the parent body of a meteoroid can produce very large pressures. These pressures heat, melt and deform the rocks. This is called shock metamorphism.
Shock Metamorphism - SpringerLink
2022年3月16日 · Shock metamorphism is the production of irreversible chemical or physical changes in target materials as a result of the passage of shock waves generated from hypervelocity impact events.
Shock metamorphism - SpringerLink
Shock metamorphism is the process by which materials are permanently changed as a result of the passage of high-pressure shock waves.
Shock-metamorphic effects (also called “shock effects” or “shock features”) have been critical to the identification of terrestrial impact structures because of their uniqueness, wide distribution, ease of identification, and especially their ability to survive over long periods of geologic time.
Shock effects in rocks and minerals | SpringerLink
The term shock metamorphism, or impact metamorphism, describes the process by which shock produces changes in rocks and minerals. The metamorphic effects include fusion, phase changes to denser materials, solid-state transformation to glass, development of planar microstructure elements in mineral grains, unusual fracture characteristics, and ...