Ridley, J., 1986, Parallel stretching lineations and fold axes oblique to a shear displacement direction: a model and observations. Journal of Structural Geology, 8: 647-653. CrossRef Google Scholar. Shackleton, R. M. and Ries, A. C., 1984, The relation between regionally consistent stretching lineations and plate motions. filexlib. What is a Foliation? A foliation is any sort of fabric-forming planar or curved planar geologic structure in a metamorphic rock, but could additionally include sedimentary bedding or magmatic layering (Wilkerson, 2019). A foliated rock holds a parallel alignment of certain minerals that are repetitively layered. (n) foliation (geology) the arrangement of leaflike layers in a rock (n) foliation (botany) the process of forming leaves Webster's Revised Unabridged Dictionary Foliation The act of beating a metal into a thin plate, leaf, foil, or lamina. Foliation The act of coating with an amalgam of tin foil and quicksilver, as in making looking-glasses.
Foliation in geology refers to repetitive layering in metamorphic rocks. [1] Each layer can be as thin as a sheet of paper, or over a meter in thickness. [1] The word comes from the Latin folium, meaning "leaf", and refers to the sheet-like planar structure. [1]
foliation noun[ Cor U] geology specialized uk Your browser doesn't support HTML5 audio /ˌfəʊ.liˈeɪ.ʃən/us Your browser doesn't support HTML5 audio /ˌfoʊ.liˈeɪ.ʃən/ a processin which rocksdivideinto thinlayersthat can be separated, or the layersthemselves 岩石葉理化 Pressure concentratedin opposingdirectionsoften causesfoliation in rocks. Foliation and Lineation. Foliation is a term used that describes minerals lined up in planes. Certain minerals, most notably the mica group, are mostly thin and planar by default. Foliated rocks typically appear as if the minerals are stacked like pages of a book, thus the use of the term 'folia', like a leaf.
foliation A continuous, sub-planar rock fabric formed by the preferred orientation of minerals with a generally platy or tabular habit. The layers are planar, and parallel but not necessarily to bedding or cleavage. The term 'foliation' is commonly applied to textures in high-grade metamorphic rocks (see METAMORPHIC GRADE ).
The foliation, which is commonly roughly axial planar to folds, is clearly shown in the hinges of slump folds and is defined by preferred alignment of inequant grains and silt-sand domains, the latter having formed from disrupted bedding laminae. This content is PDF only. Please click on the PDF icon to access. First Page Preview. Close
> Structural Geology > Foliation and cleavage This chapter is part of a book that is no longer available to purchase from Cambridge Core 12 - Foliation and cleavage Haakon Fossen Chapter Get access Cite Summary A summary is not available for this content so a preview has been provided.
Lineations in structural geology are linear structural features within rocks. [1] There are several types of lineations, intersection lineations, crenulation lineations, mineral lineations and stretching lineations being the most common. Lineation field measurements are recorded as map lines with a plunge angle and azimuth. Contents
Foliation is the planar arrangement found as a part of the structural or textural features present in any rock type, particularly the one that results from the mineral grains that are found in the metamorphic rocks typically forming a part of straight or wavy planes.
Foliation - (geology) the arrangement of leaflike layers in a rock. 2006 - WordNet 3.0;