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bogyawn: Weverton Quartzite, Weverton Formation, Cambrian Age, Cumberland County, Pennsylvania 2
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bogyawn: Weverton Quartzite, Weverton Formation, Cambrian Age, Cumberland County, Pennsylvania 1
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bogyawn: Quartz, with Metarhyolite, Catoctin Formation, Precambrian Age, Cumberland County, Pennsylvania
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bogyawn: Epidotite, Catoctin Formation, Precambrian Age, Franklin County, Pennsylvania
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bogyawn: Metabasalt, with Epidote vesicles, Catoctin Formation, Precambrian Age, Franklin County, Pennsylvania 7
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bogyawn: Metabasalt, with Epidote, Catoctin Formation, Precambrian Age, Franklin County, Pennsylvania 6
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bogyawn: Metabasalt, with Epidote vesicles, Catoctin Formation, Precambrian Age, Franklin County, Pennsylvania 5
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bogyawn: Metabasalt, with Epidote vesicles, Catoctin Formation, Precambrian Age, Franklin County, Pennsylvania 4
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bogyawn: Metabasalt, with Epidote vesicles, Catoctin Formation, Precambrian Age, Franklin County, Pennsylvania 3
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bogyawn: Metabasalt, with Epidote vesicles, Catoctin Formation, Precambrian Age, Franklin County, Pennsylvania 2
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bogyawn: Metabasalt, with Epidote vesicles, Catoctin Formation, Precambrian Age, Franklin County, Pennsylvania 1
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bogyawn: Metarhyolite, Catoctin Formation, Precambrian Age, Adams County, Pennsylvania 7
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bogyawn: Metarhyolite, Catoctin Formation, Precambrian Age, Adams County, Pennsylvania 6
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bogyawn: Metarhyolite, Catoctin Formation, Precambrian Age, Adams County, Pennsylvania 5
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bogyawn: Metarhyolite, Catoctin Formation, Precambrian Age, Adams County, Pennsylvania 4
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bogyawn: Metarhyolite, Catoctin Formation, Precambrian Age, Adams County, Pennsylvania 3
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bogyawn: Metarhyolite, Catoctin Formation, Precambrian Age, Adams County, Pennsylvania 2
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bogyawn: Metarhyolite, Catoctin Formation, Precambrian Age, Adams County, Pennsylvania 1
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bogyawn: Diabase, Triassic age, near Gettysburg, Adams County, Pennsylvania
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bogyawn: Metabasalt and Epidotite, Catoctin Formation, Precambrian Age, Franklin County, Pennsylvania 2
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bogyawn: Metabasalt and Epidotite, Catoctin Formation, Precambrian Age, Franklin County, Pennsylvania 1