Do amebelodon really have two sets of tusks (upper and lower) or do they just have big teeth on the bottom?

Question Answered by Sue Miller, Paleontologist “Shovel-tuskers” Way cool! They are ancient, now extinct, cousins of elephants. Their nickname comes from the shape of their large, flat and extended lower incisors and small upper tusks – instead of long and curved upper tusks like mammoths, mastodons, and modern elephants. They were about the size of…

Will Craters of the Moon volcanoes erupt again in the future?

Answered by Doug Owen, Park Geologist, Craters of the Moon National Monument. Originally answered March 2012. Craters of the Moon is a dormant rather than an extinct volcanic area. The volcanoes here are not dead, only sleeping. Indications of impending eruptions — earthquakes, the opening of steam vents, and ground swelling — have not occurred…

Is coal a sedimentary rock?

Answered by Kurt Edwards, Geologist and GIS Analyst, INL ESER Program he short answer is yes, coal is a sedimentary rock. Coal is formed mainly from plant material that accumulates in a swampy environment. These plants that become coal, lived before and during the time of the dinosaurs. When the plants died they would sink…

How were the Menan Buttes formed?

Question answered by Dan Moore, Ph.D., Professor of Geology, BYU- Idaho The Menan Buttes are tuff cones, a type of volcano that forms when hot, basaltic magma interacts with water near Earth’s surface. Basaltic magma, produced in Earth’s mantle, travels towards the surface through magma-filled cracks called dikes. As the magma in a dike nears the surface,…