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 ...

Sedimentary rock is one of the three main rock groups (along with igneous and metamorphic rocks) and is formed in four main ways: by the deposition of the weathered remains of other rocks (known as ...

ISLA: Look at the shape of this rock, Connor! CONNOR: Good find! That’s a ripple mark left by water that used to sit on top of this before it was rock. This used to be sand and other sediment - that's ...

An international team of researchers has found that some of the oldest terrain on Venus, known as tesserae, have layering that seems consistent with volcanic activity. The finding could provide ...

The notion that layers of rock are an archive of past Earth conditions or, as the metaphor goes, pages in the book of Earth history, is fundamental to the science of geology. The ability to read this ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The Earth is missing some of its crust, and now scientists have a new lead on what's to blame: A ...

Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation. Sedimentation is the collective name ...