Extensive underwater volcanism during ridge spreading led to rapid alteration of volcanic deposits and major changes in ocean chemistry. Credit: Gary Hincks Enlarge Around 720-640 million years ago, much of the Earth’s surface was covered in ice during a glaciation that lasted millions of years. Explosive underwater volcanoes were a […]

Earthquakes In Oklahoma

Study: Wastewater Injection Caused Oklahoma’s Largest-Ever Earthquake | Popular Science In Oklahoma, now the country’s earthquake capital, people are talking nervously about the big one as man-made quakes get stronger, more frequent and closer to major population centers. Next door in Kansas, they’re feeling on firmer ground though no one […]