There are three main types of rock: igneous rock, metamorphic rock, and sedimentary rock. Almost all fossils are preserved in sedimentary rock. Organisms that live in topographically low places (such ...

These layers of sedimentary rock were deposited in Cambrian time, when another shallow sea covered this region. Among the fossilized remains found within these layers are brachiopods, trilobites ...

Butte County Public Works rushed Wednesday afternoon to prevent flooding by clearing sediment and gravel accumulated at the ...

NASA’s Perseverance rover recently captured a stunning image of a black-and-white striped rock on Mars, sparking excitement ...

With the cooperation of adjacent property owners, crews from Butte County accessed the bifurcation and confirmed a ...

"The fact that so many places are missing the sedimentary rocks from this time period has been one of the most puzzling features of the rock record," said C. Brenhin Keller, an assistant professor ...

The basalt which makes up the Giant’s causeway is an igneous rock. Sedimentary rocks are formed by small rock pieces which are transported by rivers and laid down in layers. Chalk is a ...

What Was Happening on Earth at This Time The Precambrian is the earliest of the geologic ages, which are marked by different layers of sedimentary rock. Laid down over millions of years ...