Keywords: Angular unconformity Shawangunk Martinsburg Otisville NY.jpg Angular unconformity between underlying Martinsburg Formation and overlying Shawangunk Formation at old railroad cut near Otisville New York took myself 2012-10-21 Jstuby Cc-zero Original upload log en wikipedia Angular+unconformity+Shawangunk+Martinsburg+Otisville+NY jpg wikitable - 2012-10-24 03 16 1544×1028× 334452 bytes Jstuby Uploading a self-made file using File Upload Wizard Shawangunk Formation Unconformities in the United States Geology of New York Martinsburg Formation |