petrofabrics

petrofabrics

[¦pe·trō′fab·riks]
(petrology)
References in periodicals archive ?
Austrheim, "Structural development and petrofabrics of eclogite facies shear zones, Bergen Arcs, western Norway: implications for deep crustal deformational processes," Journal of Metamorphic Geology, vol.
The centrepiece is Borradaile and Jackson's 62 page review of "Anisotropy of magnetic susceptibility (AMS): magnetic petrofabrics of deformed rocks", including an extremely useful 3 page glossary.
Petrofabric, the study of the preferred alignment of minerals and rocks, is used as a proxy measurement for paleocurrent directions in sedimentary rocks, emplacement flow directions in igneous rocks, and strain directions in deformed and metamorphosed rocks.
Most techniques used to measure petrofabric (pebble long-axis counts, universal stage optical microscope measurements of oriented thin sections, and x-ray or neutron goniometry) are tedious and time consuming and only account for the orientations of small numbers of grains.
Application of magnetic anisotropy is often complicated because the relationship between magnetic fabric and petrofabric is not direct.
Structural geology, petrofabrics and magnetic fabrics (AMS, AARM, AIRM), Journal of Structural Geology, DOI: 10.1016/j.jsg.2009.09.006.