Definition of Nephelinite. Meaning of Nephelinite. Synonyms of Nephelinite

- Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite). If olivine is present...
- Mount Meru. Mount Meru's lavas are alkaline in character and include nephelinite. Much of the mountain's height was lost about 7,800 years ago due to...
- (containing nephelinite blocks), and nephelinitic lava flows. Rare xenoliths of phonolite lava and ijolite were discovered in nephelinite lavas, with...
- intraplate hotspots. Their silica content can range from ultramafic (nephelinites, basanites and tephrites) to felsic (trachytes). They are more likely...
- feldspathoid classifies a rock as silica-undersaturated; an example is nephelinite. Magmas are further divided into three series: The tholeiitic series...
- intraplate hotspots. Their silica content can range from ultramafic (nephelinites, basanites and tephrites) to felsic (trachytes). They are more likely...
- silica-undersaturated plutonic rock of nepheline and alkali feldspar Nephelinite – Igneous rock made up almost entirely of nepheline and clinopyroxene...
- euro for scale) Rounded, yellow, weathered peridotite xenolith in a nephelinite lava flow at Kaiserstuhl, SW Germany Large xenolith of Baltimore Gneiss...
- igneous rock. There is very little co****r-grained gabbro and diabase. Nephelinite is exposed on the islands but is extremely rare. The majority of eruptions...
- stages after a period of erosion, rocks of unusual composition such as nephelinite were produced in very small amounts. These variations in magma composition...