K kettle [31]
L Laramide Revolution [82] lateral moraine [30] layered gneisses [51] Little Ice Age [112] loess [108]
M magma [60] magnetite [52] marine sedimentary rocks [21] metamorphic rocks [53] muscovite [55]
N normal fault [39] nunatak [111]
O obsidian [101] oreodonts [97] outwash [31] outwash plain [31] outwash terraces [34]
P pegmatite [56] period [46] Pinedale Glaciation [109]
Q quartzite [63]
R reverse fault [39] rhyolite [100] rock glaciers [26]
S schist [51] sedimentary rocks [45] series [47] serpentine [55] “soapstone” [55] Sundance Sea [79] systems [46]