Beneath the ocean floor, a hidden carbon vault has been quietly rewriting Earth’s climate story

Scientists discovered massive volcanic rubble, breccia, on the South Atlantic seabed. This porous rock traps far more carbon ...
Independent Record

Much of old Helena built on volcanic breccia rock

The igneous goings-on that brought gold to the Helena hills also brought us a lot of good building stone. It happened in several ways. Our silvery gray "Tenmile" granite arrived about 70 million years ...