Planar deformation features, or PDFs, are optically recognizable microscopic features in grains of silicate minerals (usually quartz or feldspar), consisting...

diagnostic of shock metamorphism. Planar deformation features, or PDFs, are optically recognizable microscopic features in grains of silicate minerals (usually...

planes, which show up as lines under a microscope, are called planar deformation features (PDFs), or shock lamellae. Shocked quartz was discovered following...

cones, planar deformation features, pseudotachylyte veins, and impact melts and breccias. There is also evidence of planar deformation features in quartz...

mechanism maps Deformation monitoring Deformation retract Deformation theory Elasticity Malleability Planar deformation features Plasticity (physics) Poisson's...

Foundation of Chinese Art Pigment dispersing factor, in biology Planar deformation features, in geology Playa del Fuego, a Delaware art festival Post-Doctoral...

pointing toward the center of the structures, and microscopic planar deformation features (PDFs) found in quartz grains of sandstones outcropping in the...

transform plagioclase into maskelynite, or create planar deformation features. The presence of impact deformation of basalt layers comprising the rim, of shocked...

another group of mineralogic features that indicated that Avak is a meteorite impact structure: the planar deformation features. "Avak". Earth Impact Database...

channel exceed 30,000 K, with sufficient pressure to produce planar deformation features in SiO2, a kind of polymorphism. This is also known colloquially...

Koeberl, Christian (2016-04-01). "WIP: A Web-based program for indexing planar features in quartz grains and its usage". Meteoritics & Planetary Science. 51...

shock veins S5: strongly shocked (45-55 GPa); very strong planar fracturing and deformation features in olivine; alteration of plagioclase into maskelynite;...

continents can be found under Impact structures by continent below. These features were caused by the collision of meteors (consisting of large fragments...

that deformation. Primary data sets for structural geology are collected in the field. Structural geologists measure a variety of planar features (bedding...

plastic deformation and flow microtextures. The planar microstructures consist of rare planar fractures and possible planar deformation features. Of these...

shatter cones in the area. Other evidence for impact includes planar deformation features (PDFs) in quartz and feldspar grains. In contrast to the surrounding...

area. In 1996, Christian Koeberl and his colleagues discovered planar deformation features (PDFs) in samples from two oil wells at the center of the structure...

petrology, describes a type of planar rock feature that develops as a result of deformation and metamorphism. The degree of deformation and metamorphism along...

shock forces of an impact. The effects include shatter cones, planar deformation features (PDFs), selective melting and many others. The amount of shock...

impact by one or several asteroids or comets. Some features, such as planar deformation features (PDFs) in quartz crystals found within and associated...

and titanium. On the shorelines of the Pacific Ocean there are erosional features that are indicative of a very large tsunami. These include an erosional...

impact melt rocks. An analysis of these rocks also revealed planar deformation features as well as the composition of the meteorite itself. Enrichments...

such as microbreccias and planar deformation features. Subsequent studies in the Maniitsoq region demonstrated that deformation in the region continued...

In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass...

flood basalts, mass extinctions, and "impact signals" (such as planar deformation features, shocked quartz, and iridium anomalies) traditionally considered...

There are abundant shock metamorphic features exhibited in the rocks of the island. Planar deformation features, diaplectic glass, melt rocks, and shatter...

of the structure was confirmed in 1997 when poorly developed planar deformation features (PDFs) in quartz grains were found in drill-core samples obtained...

A., Heinrich, P., Horn, M., Webb, A. and Sivils, A., 2020. Planar Deformation Features Found Within a Possible Impact Structure, the Brushy Creek Feature...

breccia boulder have revealed shock metamorphic features, (planar fractures and planar deformation features) in quartz grains, which formed when the rock...

2016 fieldwork contained shocked quartz grains with multiple planar deformation features (PDFs). The observed orientation of the PDFs is consistent with...