Definition of Trachyandesites. Meaning of Trachyandesites. Synonyms of Trachyandesites

- Trachyandesite is an extrusive igneous rock with a composition between trachyte and andesite. It has little or no free quartz, but is dominated by sodic...
- Trachybasalt. S2 (Basaltic trachyandesite)—*Sodic and pot****ic variants are Mugearite and Shoshonite. S3 (Trachyandesite—*Sodic and pot****ic variants...
- fields, such as the trachyandesite field, are further classified by the ratio of pot****ium to sodium (so that pot****ic trachyandesites are latites and sodic...
- varying between different rock types. Orthopyroxene is absent in the trachyandesites of Tambora. Olivine is most present in the rocks with less than 53...
- basalt-trachybasalt-trachyandesite volcanoes (Ngorongoro also contains trachydacite) and the 1.6-1.5 Ma Oldeani basalt-trachyandesite volcano. The highlands...
- is intermediate in composition between basalt and andesite Basaltic trachyandesite – Naming system for volcanic rocksPages displaying short descriptions...
- an estimated VEI of 7. An estimated 41 km3 (10 cu mi) of pyroclastic trachyandesite were ejected, weighing about 10 billion tonnes. This left a caldera...
- classification of volcanic rock, mugearite is classified as sodium-rich basaltic trachyandesite. Mugearite was first identified at Mugeary on the island of Skye, Scotland...
- Huechulafquen. This cone has three craters. A tephra layer of black trachyandesite has been linked to Huanquihue and is dated 4028-4212 BP. Varve count...
- N. Hanson (July 1984). "Mantle-derived Archaean monozodiorites and trachyandesites". Nature. 310 (5974): 222–224. Bibcode:1984Natur.310..222S. doi:10...