amphibolites in English

noun
1
a granular metamorphic rock consisting mainly of hornblende and plagioclase.
It contains a variety of lithologies including augen gneiss, quartzite, amphibolite , calc-silicate, pelite and marble.

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1. Cummingtonite is commonly found in metamorphosed magnesium-rich rocks and occurs in amphibolites

2. Amphibolite: Amphibolites are metamorphic rocks with large grains of green, brown, and black

3. Garnet amphibolites of this zone have andesine plus zoisite or epidote, and some contain diopside.

4. Amphibolite is a dark, heavy, metamorphic rock composed mostly of the mineral amphibole. Amphibolites have very little to no quartz

5. Amphibolite Amphibolites are characterized with nematoblastic or granoblastic texture Amphibolites are formed from more basic magmatites usually containing more magnesium amphibole (anthophyllite), and the ones crops up from weak basic and neutral magmatites containing nearly equal amounts of hornblende and Ca-plagioclase.

6. Precambrian amphibolites and quartz-mica schists in the Saidapuram-Podalakuru area fall within the almandine-amphibolite facies of regional metamorphism.

7. Further experiments are needed to study the effects of time and temperature on textures in anisotropic rocks, particularly lineated amphibolites.

8. Amphibolites are hornblende-plagioclase rocks of metamorphic origin that are widely distributed, especially in Precambrian shield areas and in younger orogenic belts

9. Most LG amphibolites have relatively high Nb, TiO2, Zr, and light rare earth element contents, indicative of an alkalic to tholeiitic, within-plate basalt origin.

10. Slightly foliated, Amphibolites generally form during the regional metamorphism of igneous rocks primarily composed of ferromagnesian minerals, though other types of the rocks are also known to occur.

11. Isotope dilution – thermal ionization mass spectrometry (ID–TIMS) and chemical abrasion – thermal ionization mass spectrometry (CA–TIMS) dating of magmatic zircon from amphibolites in the Hauser Lake Gneiss yield 1470–1430 Ma crystallization ages based on discordant data, with Cretaceous lower intercepts.