Moon Craters and Oregon Volcanoes |
Contents
Figure | 14 |
Contents | 20 |
A Cluster of Secondary Craters | 26 |
Copyright | |
9 other sections not shown
Common terms and phrases
ash falls ash flows astronauts atmosphere basalt flows basalt lava breccias bubbles carbon dioxide central Oregon chain craters cinder cones cluster coesite Copernicus crater floor Crater Lake crater rim crater walls crystals debris deposits earth East Lake ejecta blanket explosive feet Figure fissures flood basalts formed frothing geologic glass gouges heat hummocky ignimbrites Imbrium Basin impact craters lava flows Little Crater lunar night lunar surface maar-like maar-type maars magma mare filling Mare Imbrium mare surface material melted Meteor Crater meteor impact meteorite miles in diameter minerals molten rock moon craters moon's surface Mount Mazama mountain Newberry Caldera Newberry shield Newberry volcano Observatory photograph Obsidian flow outward particles Paulina permafrost permafrost layer primary craters Pumice Cone radiation Ranger rays rhyolite rille rille craters rise scoria secondary craters shallow shattered shield volcanoes shock Shoemaker slopes small craters splashes spongy telescope temperature tuff ring Tycho underground valleys volcanic activity weathering