Sedimentary rocks are made up of pieces of older rocks (igneous, metamorphic, and sedimentary) and organic remains (shells, bone, etc.). When rocks break apart from erosion they are transported by ...

All the rocks in the world are mainly classified into three types: Sedimentary, Igneous and Metamorphic. Igneous and sedimentary rocks are largely prevalent in the world. Here are few interesting ...

There are three types of rock found on Earth. These are igneous, metamorphic and sedimentary. Each rock type is formed in a different way. For example, the rock malachite is mostly made of the ...

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 ...

1. Igneous rocks: They are formed, when the molten magma cools and becomes solid. There are two types of igneous rocks: intrusive rocks and extrusive rocks. An extrusive igneous rock is formed from ...

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.

ATTENTION has been directed in these columns to this now well-known text-book on two previous occasions. On May 14, 1891 (vol. xliv., p. 25), the first edition was reviewed at length, and on May 20, ...

From left, UW students Shane Scoggin, Adam Trzinski and Jessie Shields are part of new research investigating crustal melting in western North America. Here, they examine igneous rocks in the Snake ...