WebMetamorphism is defined as follows: The mineralogical and structural adjustment of solid rocks to physical and chemical conditions that have been imposed at depths below the … WebMetamorphic geology has a long history. The microscopic description and classification of metamorphic rocks began in the late nineteenth century. The theory of equilibrium mineral …

What is the Difference Between Progressive and Retrogressive ...

WebUniversity at Buffalo WebJan 1, 2007 · Table 2.11.3: Classification of shocked quartzofeldspathic rocks (progressive stages of shock metamorphism); modified from Stöffler (1971, 1984); pos t shock temperatures are relative to an ... branchement mcintosh mc135

Types of Metamorphism - Tulane University

WebThe various types of foliated metamorphic rocks, listed in order of the grade or intensity of metamorphism and the type of foliation are slate, phyllite, schist, and gneiss (Figure 7.8). As already noted, slate is formed from the low-grade metamorphism of shale, and has microscopic clay and mica crystals that have grown perpendicular to the stress. WebThe Kieffer et al. (1976) classification scheme of progressive shock metamorphism is found to apply to lunar basalts. The major shock features of the five classes that span the range 0 to 1000 kbar are described. Only three out of 152 basalt specimens show shock effects in their natural state as severe as Class 2 features. WebThe principle of progressive shock metamorphism in nonporous silicate rocks is discussed on the basis of petrographic observations and experimental data. The p-T conditions and the nature of the ba... branchement logitech x530