This is a preview. Log in through your library . Current issues are now on the Chicago Journals website. Read the latest issue.One of the oldest journals in geology, The Journal of Geology (JG) has ...

THE closing years of the nineteenth century witnessed a revival of interest in the petrology of gneous rocks, which must be regarded as marking an important stage in the development of that subject.

The Journal of Geology, Vol. 46, No. 3, Part 2 (Apr. - May, 1938), pp. 505-520 (16 pages) A modified variation diagram for plotting groups of chemical analyses of ...

In my last column, I wrote about the locations where you can find igneous rocks that were formed from lava. The metarhyolite and metabasalt described in the column are known as extrusive rocks, those ...

Scientists drilled the deepest core yet, reaching near Earth's mantle, uncovering unique geological samples and offering new ...

HOWEVER prophetic may have been the far-seeing premonitions of men in advance of their age in the dim past, and however invaluable may have been the additions made to the superstructure since, it can ...

We often talk about climate change, melting glaciers, or strange landforms. But we rarely think about something that’s always around us– rocks. They don’t make the news, but they’re everywhere. We ...

One main goal of NASA's Mars 2020 mission is to determine when conditions on the planet were conducive to the formation of liquid water. Hence the target Jezero crater, seemingly a lakebed with a ...

The latest sign that plastic pollution is a gigantic global problem: rocks fused with melted plastic have been found on a remote Brazilian island, best known as a nesting site for green turtles.