Add Yahoo as a preferred source to see more of our stories on Google. A geology program will take place in Waynesboro, Pennsylvania on Thursday, May 1. According to a community announcement, geologist ...

Chlorite alteration denotes the transformation of primary rock constituents into chlorite minerals under the influence of hydrothermal fluids or metamorphic overprint. This process occurs across a ...

Where do we come from? How did our planet form? How do we know about the history of our solar system? You can explore these universal questions in the Moon, Meteorite and Solar System Gallery. Earth’s ...