Mt. Moosilauke (12000 B.P.) - The Ice Age
". . . The Wisconsin or Laurentide ice sheet in central New Hampshire, which was the most recent of three Pleistocene to Holocene (1.6 million years ago to present time) glaciations and ended ca. 12,000 years ago, was about a mile thick. Only the top of Mt. Washington is thought to have peeked through the ice.
The evidence that the southeasterly-moving ice sheet overtopped Moosilauke is (1) glacial striations or scratch marks just southeast of the summit house foundation, (2) yellow till (unsorted sand and boulder sediment deposited by the passing glacier) in the summit area, and (3) glacial erratics, rocks from parts of New Hampshire and New England "upstream" from Moosilauke, on the summit.
Glacial erratics on Moosilauke may be mica schist, like the Littleton Formation of the mountain, but can also be any rock type found to the northwest along the path of the ice sheet. Erratics can be transported tens to hundreds of miles from their source. . . ."
From "The Geology of Mt. Moosilauke and Environs" by MaryAnn Love Malinconico, pp. 1-12, The Moosilaukee Reader (Vol.1). ©1999.