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Geology of Pennsylvania / Geology of New Jersey / Metamorphic petrology / Metamorphic rock / Hornfels / Ringing rocks / Perkiomen Creek / Diabase / Hardyston Quartzite / Petrology / Geography of Pennsylvania / Igneous petrology


_______UPPER PERKIOMEN CREEK WATERSHED CONSERVATION PLAN_______ Geology The southern half of the Upper Perkiomen Creek watershed is situated within the Newark Basin portion of Triassic Lowland Province, a broad basin wi
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Document Date: 2005-02-12 14:51:30


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