It's an open-pit mine, formed around a kimberlite pipe, a rare type of volcanic rock formation that can contain high ...

Those discovered at the surface have been carried there by unusual, explosive volcanoes called kimberlite pipes, which traverse the crust from bottom to top, erupting at ground level. Dr Gernon ...

It sits on top of a special type of volcanic rock called a kimberlite pipe, which is known to contain diamonds. The mine has three main kimberlite pipes, which together produce millions of carats ...

THESIS TITLE: KIMBERLITE CRYSTALLIZATION AND EMPLACEMENT THROUGH THE LENS OF MANTLE-DERIVED ILMENITE AND CHROMITE ABSTRACT: This thesis explores kimberlites through the lens of mantle-derived oxides, ...

It is widely believed that Earth's atmosphere has been rich in oxygen for about 2.5 billion years due to a relatively rapid increase in microorganisms capable of performing photosynthesis.

Guatemala’s Volcano of Fire is erupting, and authorities have evacuated nearly 300 families while warning that another 30,000 people in the area could be at risk. The eruption started overnight.

Guatemala’s Volcano of Fire is erupting, and authorities have evacuated nearly 300 families while warning that another 30,000 people in the area could be at risk GUATEMALA CITY -- Guatemala's ...

The Alaska Volcano Observatory on Wednesday said Mount Spurr is at risk of erupting within the next few weeks or months, potentially impacting residents 78 miles away in the city of Anchorage.