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Metamorphism - Springer Nature

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Last Updated: 11 January 2022

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Formation, preservation and extinction of high-pressure minerals in meteorites: temperature effects in shock metamorphism and shock classification

The goal of identifying shock metamorphic features in meteorites is to estimate the matching shock pressure problems. The temperature level irregularity of shock metamorphism is similarly crucial and can result in a varied and heterogeneous collection of shock attributes in examples with a common total shock pressure. In this study, we determined shock temperatures and possible P-- T paths of chondritic and distinguished mafic-- ultramafic rocks for various shock stress. Shock pressures over of 50 GPa in meteorites result in melt breccias with high overall post-shock temperature levels that harden out HP-mineral trademarks. The existence of ringwoodite, which is generally thought about an indicator of the S6 shock stage, is inconsistent with stress over of 30 GPa and does not represent shock conditions various from S4 shock conditions. Certainly, ringwoodite and existing together HP minerals need to be considered as durable proof for moderate shock pressures as opposed to extreme shock near whole-rock melting.

Source link: https://doi.org/10.1186/s40645-021-00463-2

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions