Martinsburg Formation
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The Ordovician Martinsburg Formation is a mapped bedrock unit in Pennsylvania, New Jersey, Maryland, Virginia, and West Virginia. It is named for the town of Martinsburg, West Virginia for which it wa
A sample of the Martinsburg shale from the Pennsylvania Turnpike (Northeast Extension) at mile post 66.
Kittatinny Valley
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The Kittatinny Valley is a section of the Great Appalachian Valley in Sussex and Warren counties in northwestern New Jersey that is bounded on the northwest by Kittatinny Mountain, and in the southeas
Martinsburg Formation
…West Virginia for which it was first described. It is the dominant rock formation of the Great Appalachian Valley in New Jersey (where it is called Kittatinny Valley) and Pennsylvania (in the Lehigh Valley and Lebanon Valley). The Martinsburg is defined as a gray to dark gray, and infrequently tan and purple shale…
Kittatinny Valley as seen from Kittatinny Mountain in Walpack Township, New Jersey