Comendite is a hard, peralkaline igneous rock, a type of light blue grey rhyolite. Phenocrysts are sodic sanidine with minor albite and bipyramidal quartz...

Peralkaline rhyolites (rhyolites unusually rich in alkali metals) include comendite and pantellerite. Peralkalinity has significant effects on lava flow morphology...

hawaiites, but nephelinite, basanite and peralkaline phonolite, trachyte and comendite are locally abundant. These rocks were deposited by volcanic eruptions...

surmounted by rocks composed of trachyte, phonolite, pantellerite, or comendite. Their activity has been attributed either to the reactivation of crustal...

average volatile contents in the MI and matrix glass combined with the comendite magma volume (3-17 km3 DRE) the volatile release was between 5 and 30...

Rhyolite – Igneous, volcanic rock, of felsic (silica-rich) composition Comendite – Hard, peralkaline igneous rock, a type of light blue grey rhyolite Pantellerite –...

hawaiite, trachybasalt, benmoreite, tristanite, mugearite, trachyte, comendite and pantellerite were deposited by multiple eruptions of the MEVC; the...

the East Australia hotspot. The cores of the hills contain columns of comendite from lava which cools quickly into a hard rock. The surrounding softer...

peralkaline conditions. Examples are the peralkaline rhyolites, comendite and pantellerite, with comendite being the more felsic (silica-rich) rock. Another example...

peralkaline rhyolite. It has a higher iron and lower aluminium composition than comendite. It is named after Pantelleria, a volcanic island in the Strait of Sicily...

Armadillo Formation has yielded ages of 10.2 ± 1.4 million years for comendite, 6.9 ± 0.3 million years and 6.1 ± 0.1 million years for comenditic ash...

include nephelinite, basanite and peralkaline phonolite, trachyte, and comendite lavas. The most magnesium oxide-rich nephelinites, basanites and alkaline...

with the calcic augite phenocrysts of tholeiites. Peralkaline rhyolites (comendite or pantellerite) may be generated by fractionation of alkali basalt magma...

Khaybar, Jabal Abyad and Jabal Bayda, derive their light appearance from comendite. Jabal Abyad, at an elevation of 2,093 metres (6,867 ft), is the tallest...

of Early Tertiary age. The upper part of the butte consists of basalt, comendite and epiclastic deposits of the Armadillo Formation, another stratigraphic...

Edziza Formation Overlies Nido Formation Lithology Primary Trachyte, comendite, pantellerite Other Basalt Location Coordinates 57°30′N 130°36′W / 57...

million years and consist of a bimodal suite of basalt, trachyte and comendite. Basaltic and comenditic dikes are the most abundant, distributed in about...

chemically bimodal, consisting of rocks such as basalt, trachyte and comendite. They form the westernmost extent of the Anahim Volcanic Belt on Athlone...

include basalt, dacite and rhyolite (including the peralkaline variety comendite). The 18 km (11 mi) of its coasts are mostly rocky; the western and northern...

Blairmorite: Blairmore, Alberta, Canada Boninite: Bonin Islands, Japan Comendite: Comende, San Pietro Island, Sardinia Cummingtonite: Cummington, Massachusetts...

nephelinite, basanite and peralkaline phonolite, trachyte and comendite lavas. The trachyte and comendite lavas are understood to have been created by fractionation...

hawaiites, but nephelinite, basanite and peralkaline phonolite, trachyte and comendite are locally abundant. These rocks were deposited by volcanic eruptions...

hawaiites, but nephelinite, basanite and peralkaline phonolite, trachyte and comendite are locally abundant. These rocks were deposited by volcanic eruptions...

by hawaiite and the few outcrops on the main volcano by benmoreite and comendite. Latite has been reported as well. They contain phenocrysts of olivine...

the Executive Committee Range volcanic lineament. The volcano erupted comendite, hawaiite and mugearite, with the former found at Chang Peak and the latter...

Assemblages include most of the rhyolite domes, related flows and the Ilgachuz Comendite. The northerly domes are subcircular talus mounds of plate sized pieces...

the volcanic province consist largely of trachyte, pantellerite, and comendite lavas. These lava compositions were formed by fractionation of primary...

hawaiites but nephelinite, basanite and peralkaline phonolite, trachyte and comendite are locally abundant. These rocks were deposited by volcanic eruptions...

Olivine basalts K–Ar dating 100,000 ± 20,000 BC Trachybasalts c. 150,000 BC Comendites K–Ar dating c. 240,000 BC Quartz trachytes c. 270,000 BC Ignimbrites Emission...

volcanic rocks of Mount Berlin define a trachyte suite, which features both comendite and pantellerite. Phonolite is less common. Mafic rocks have been reported...