Initial reports indicate that it registered as a 4.2 quake, and was centered about nine miles from Great Falls.

Editor's note: “Roadside Geology of Montana” is a finalist in the Medicine and Science category of the 2021 High Plains Book Awards.

Introduction -- Pioneer geologists of the American West / Dr W. Lyle Dockery -- Physical geology -- Regional geography -- Cities, towns and highways / American Association of Petroleum Geologists and ...

Get any of our free daily email newsletters — news headlines, opinion, e-edition, obituaries and more. To place the Chinese Wall in the southwest Montana tourism region might seem a bit odd as it is ...