| Definition | Term |
|---|
| reorganization and movement of grain boundaries, most obvious in monomineralic rocks | |
| increase of temperature with depth | |
| metamorphism dominated by chemical changes | |
| structures or minerals from parents rock that did not undergo metamorphosis when surrounding rock did | |
| arenite with > 50% feldpar | |
| 3rd weathering method, hydration etc. | |
| neo & recrystallization as temperature and pressure decrease, typically during uplift or exhumation | |
| exfoliation, frost acation, abrasion | |
| very closely spaced alignment of minerals produced by directional stress | |
| the finer-grained material that occurs between the coarser grains in a rock | |
| formation and growth of new minerals, most common, same as diagenesis but at higher temperatures | |
| platy and acicular minerals intergrown in a nonfoliated, interlocking and locally radiating manner | |
| a general summary of a particular depositional system, involving many individual examples from recent sediments and ancient rocks | |
| mineral bounded by its own faces | |
| an indication of the efficiency of the transport medium, it is evaluated on the amount of matrix and the roundness & sorting of clasts | |
| caused mainly by deviatoric stress | |
| neocrystallization and recrystallization as temperature and pressure increase, typically during burial | |
| arenite with >50% lithic rock fragments | |
| type of sandstone characterized by a matrix of between 15 and 75% | |
| results from radioactivity and magma emplacement | |
| affect large volume of rocks | |
| small scale effect of metasomatism | |
| pressure is main agent | |
| few, large grains that occur when nucleation is inhibited | |
| crushing and breaking of rocks | |
| visible on hand sample scale | |
| a size parameter used to describe the textures of clastic rocks by relating the variation in grain sizes within the rock, it affects porosity and permeability | |
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