The chemical makeup of mineral inclusions preserved in impact glass hints at the site of a missing impact crater.

Some other examples of igneous intrusions in Scotland can be found at Dumbarton Rock (a volcanic plug in Dumbarton) and Loudoun Hill (a volcanic plug in Ayrshire). Learn more about some of the ...

With our ideas of volcanoes we always associate the grand and the terrible ; and a volcanic eruption—a huge piece of artillery, with a mouth perhaps miles in circumference, shooting up rocks and ...

Eventually, all the surrounding soil and rock eroded away, but the harder volcanic (igneous) rock remains, forming Bear Butte. Bear Butte rises 1,253 feet about the surrounding plain. It is 4,426 ...

What FACTS ABOUT ROCKS do you know? They are abundant on earth, and yet little is known about them. These facts will increase your knowledge of the rocks.

Southern China is unusual in that respect: fossil-bearing marine limestones and the volcanic rocks of the Emeishan large igneous province can be studied in the same outcrop sections. This setting ...

The study of ancient lava formations on Mars is the most complete to date from a series of observations conducted on the ...

Igneous petrology has entered a quantitative stage of development ... The quantitative petrography of volcanic rocks. The evolution of mafic magma during magma ascent (both from a purely petrological ...

For now, the Eifel volcanic field lies dormant ... or flat sheets of igneous rock that form between existing crystalline host rock. The features' characteristics suggest that they may be pockets ...