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 ...

Of the three principal rock types (igneous, sedimentary, and metamorphic), igneous rocks can be thought of as "primary" rocks because they crystallize from a liquid. Sedimentary and metamorphic rocks, ...

BAS, M. J. LE 2001. Report of the Working Party on the classification of the lunar igneous rocks. Meteoritics & Planetary Science, Vol. 36, Issue. 9, p. 1183.

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 ...

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 ...

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 ...

EX: Slate 3.1.1.2. 2. Non-foliated metamorphic rocks which do not have a layered or banded appearance. Ex: marble and quartzite 4.1.1.1. 1. Intrusive Igneous- solidify below Earth's surface Ex: gabbro ...

The rock was excavated from the Bushveld Igneous Complex in South Africa, an area known for its rich ore deposits. This is the oldest example of living microbes being found within ancient rock so ...