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Tyson Formation - dolostone member (VTCAZtd;0)
Geologic Formation
in
VT
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Lithology
Dolostone
Quartzite
Geologic Age
Neoproterozoic – Early Cambrian (1000 Ma – 521 Ma ago)
Geologic Unit Label
CAZtd
Largely massive, gray-, beige-, and pinkish-gray-weathering dolostone, beds of pebbly quartz dolostone, and pink- to orange-tan-weathering dolostone as lenses in phyllite. Contains beds of bluish-gray and whitish-gray vitreous quartzite. Similar to dolostone of the Forestdale Formation (CZfd). Eastern and western flank of the Green Mountain massif.
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USGS
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Geologic Formation
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