In 1968, VK Prest classified these geological formations into the three types of transverse, parallel, and non-oriented. One example of the transverse type is named for De Geer, and is characterized by linear closely-spaced washboard structures, as seen in the Kvarken Archipelago and Scottish Highlands. A famous one is the Ronkonkoma, formed during the Wisconsin Stage of the Pleistocene on Long Island, while a state park around Lake Arthur in Pennsylvania is named for these. A recent period of abnormal warmth is evidenced by the push type of these, while the recessional type form at higher elevations, and interlobate 
In 1968, VK Prest classified these geological formations into the three types of transverse, parallel, and non-oriented. One example of the transverse type is named for De Geer, and is characterized by linear closely-spaced washboard structures, as seen in the Kvarken Archipelago and Scottish Highlands. A famous one is the Ronkonkoma, formed during the Wisconsin Stage of the Pleistocene on Long Island, while a state park around Lake Arthur in Pennsylvania is named for these. A recent period of abnormal warmth is evidenced by the push type of these, while the recessional type form at higher elevations, and interlobate ones occur at common margins. Talus from side basin shearing creates lateral ones, while end deposits of till result in the terminal type. For 10 points, give this term for the poorly sorted material left behind by glaciers.
In 1968, VK Prest classified these geological formations into the three types of transverse, parallel, and non-oriented.
moraines