Definition of Isograd. Meaning of Isograd. Synonyms of Isograd

- An isograd is a concept used in the study of metamorphic rocks. The metamorphic grade of such a rock is a rough measure of the degree of metamorphism...
- Thrust using various different criteria such as lithology, metamorphic isograd, geochronology, geochemistry, and strain magnitude. None of these are reliable...
- connect points with the same metamorphic grade are called isograds. The secant lines of isograds with the surface form lines on a geologic map. Changes in...
- partial pressures of CO2 reduces the temperature of the anthophyllite-in isograd. Ultramafic rocks in purely hydrous, CO2-free environments will tend to...
- Pressure-Temperature Paths. Garnets are used as an index mineral in the delineation of isograds in metamorphic rocks. Compositional zoning and inclusions can mark the...
- between amphibolite and granulite facies is defined by these reaction isograds: amphibole → pyroxene + H2O biotite → K-feldspar + garnet + orthopyroxene...
- with amphibolitic compositions At amphibolite facies, the diopside-in isograd is reached (dependent on carbon dioxide partial pressure) and metamorphic...
- Juneau Table Top in upper left corner "Preliminary Geologic and Metamorphic-Isograd Map of the Juneau B-2 Quadrangle, Alaska" (PDF). (5.4 MB) Weather forecast:...
- the “transitional gneiss” first the andalusite isograd is reached, followed by the cordierite isograd. This indicates a magmatic origin of the gneisses...
- first mapping of "progressive metamorphism through the use of mineral isograds". Eskola, P. (1920). The Mineral Facies of Rocks. Norsk Geologisk Tidsskrift...