| Definition | Term |
|---|
| a measure of how well fluid will flow through a rock | |
| crushing and breaking of rocks | |
| visible on hand sample scale | |
| arenite with >50% lithic rock fragments | |
| pre-metamorphic rock | |
| very closely spaced alignment of minerals produced by directional stress | |
| most commonly H2O or CO2, induce changes in rock, alter mineralogy | |
| porosity developed developed when seiment is deposited | |
| rocks that have undergone a change in form | |
| a general summary of a particular depositional system, involving many individual examples from recent sediments and ancient rocks | |
| preferred linear alignments of elements such as minerals, bundles of microfolds, striations or grooves, or intersections of 2 planar features | |
| porosity developed during diagenesis | |
| the finer-grained material that occurs between the coarser grains in a rock | |
| an indication of the efficiency of the transport medium, it is evaluated on the amount of matrix and the roundness & sorting of clasts | |
| structures that prevade rock | |
| broken rock and mineral grains | |
| chemically precipitated material that fills the spaces between framework grains in sedimentary rocks | |
| type of sandstone with matrix minerals comprising 15% or less of the rock | |
| structures or minerals from parents rock that did not undergo metamorphosis when surrounding rock did | |
| grain boundaries do not equal crystal faces | |
| pressure is main agent | |
| 3rd weathering method, hydration etc. | |
| 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 | |
| crystal that gets its outline from neighbouring crystals | |
| a process in which pressure is concentrated at the point of contact between 2 grains, causing the contact area to dissolve and allowing for subsequent migration of ions or molecule | |
| a sedimentary rock dominated by particles of less than 0.004mm in diameter, lacking in laminations and >75% matrix | |
| exfoliation, frost acation, abrasion | |
