Mafic lavas are hot, high in silica, low in volatiles, and relatively viscous. Volcanic lavas are called felsic lavas, and they are usually cooler and include high levels of silica and volatiles.

It shows a curious fracture surface due to a heavy gelignite detonation in finely crystalline “trap” rock. So far as I can remember I had seen other examples of this phenomenon, but ...

IN the middle of the last century much interest was shown in the problem of the genesis of igneous rocks, and especially in the manner of origin of diverse rock-types from a common stock or from a ...

Igneous intrusions are a type of rock feature. They form when molten rock cools below the surface of the Earth. Join Isla and Connor as they explore igneous rock landscape features at Traprain Law ...

Triangle is the outermost of the Scott Islands Group, lying some 45 km off the northwestern tip of Vancouver Island, and 10 km west of its nearest neighbour, Sartine Island. This island complex ...

Find out more about available formats and browse any associated online resources. All Earth Science students need to understand the origins, environments, and basic processes that produce igneous and ...

As it pertains to rock bands, there are several gray areas as far as who or what is even considered to be “rock.” In the case of this list, the bands chosen and considered are from major sub ...

The Atlas of Minerals and Igneous and Metamorphic Rocks in Thin-section provides the geology student and geoscientist with a stunning new color atlas of the main rock-forming minerals and igneous and ...

is supplied from igneous rock from Russia, South Africa, Brazil, and Finland. These igneous phosphate deposits are mostly from the Khibiny Alkalic Igneous Complex (Notholt, 1979) and the Kovdor ...

Jalen Brunson shares how his dad, Rick, contributed to his NBA journey in the latest Pass the Rock. After a stellar In-Season Tournament run, Pacers star Tyrese Haliburton is charting a course ...

If you have a large room that you plan on filling with peppy pop, heavyweight hip-hop or raucous rock, Triangle’s larger-than ...