Lava flows, near mile-thick glaciers and ice age floods layered and carved up this landscape.

Places such as Purgatory Chasm and Millstone Hill, in Worcester's Green Hill Park, bear witness to the work of the glaciers.

Rock and mineral clubs such as Worcester Mineral Club sponsor field trips to mines and other places to learn more ... quartz, lots and lots of quartz around here," said ... metamorphic rocks, ...

Scientists agreed the rocky outcrops in a remote part of Quebec, Canada, were ancient. But were they really Earth’s oldest?

New testing now shows the rocks are 4.16 billion years old, formed during the Hadean eon, when Earth was just beginning to ...

HIGHLIGHTS:Thick high-grade gold at the Zone 126 trend confirming vertical and grade continuity. Highlights include:25GLR022: ...

The metamorphosed volcanic rocks are primarily basaltic in composition. Basalt is a common volcanic rock, while metamorphic rocks are those altered over time by heat and pressure. O’Neil said the ...

Imagine here a “U” on its side. It is a very steep route of about 900 metres and one of the very few passes in South Africa of less than one kilometre. There is just one hairpin curved bend. The ...