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 ...

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.

Pumice is an example of extrusive igneous rock. The word extrusive means that the magma was forced onto the earth's surface and cooled in a matter of hours. Granite is an example of intrusive igneous ...

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 ...

This image is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. When we look at a rock, we often just focus on its size and appearance. Is it light or heavy? Dark or ...

Eleanor has an undergraduate degree in zoology from the University of Reading and a master’s in wildlife documentary production from the University of Salford. Eleanor has an undergraduate degree in ...

THE magnetization of dated igneous rocks has been much used for the study of the directions of the geomagnetic field in remote geological periods. This method is based on the supposition that igneous ...

Rocks and minerals are closely related, but there are fundamental differences between the two. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

The Perseverance Mars rover takes a selfie as it looks at the “Rochette” rock, the first rock successfully sampled by the rover. One year ago, NASA’s Perseverance Mars rover successfully collected its ...

The ISS Crew Earth Observations Facility and NASA's Earth Science and Remote Sensing Unit (Johnson Space Center) collaborate ...

Using NASA’s Mars Perseverance rover, a team of scientists including University of Florida astrobiologist Amy Williams has collected the first Martian rock samples that could be returned to Earth – ...