Snitz Creek and Buffalo Springs Formations, undivided

Includes, in descending order, the Snitz Creek (CAsc) and Buffalo Springs (CAbs) Formations. Snitz Creek Formation - thick-bedded. medium- to coarsely crystalline dolomite; in part oolitic, containing laminated limestone and sandstone interbeds. Buffalo Springs Formation - light-gray to pinkish-gray, finely to coarsely crystalline limestone and interbedded dolomite; numerous siliceous and clayey laminae; stromatolitic limestone beds near top; some thin sandy beds.
State Pennsylvania
Name Snitz Creek and Buffalo Springs Formations, undivided
Geologic age Cambrian
Lithologic constituents
Major
Sedimentary > Carbonate > Dolostone (Bed)
Sedimentary > Carbonate > Limestone (Bed)
Minor
Sedimentary > Clastic > Sandstone (Bed)
Comments Secondary unit description from USGS Geologic Names lexicon (ref. PA003): The Snitz Creek Formation of the Conococheague Group consists of light-gray to dark-gray, very finely to finely crystalline dolomite; much of the dolomite is argillaceous, silty, or sandy. Thickness is 300 to 400 feet. Unit occurs is western part of Mount Joy belt. Overlies the Buffalo Springs Formation and underlies the Millbach Formation, both of the Conococheague Group. Named the Buffalo Springs member of the Conococheague formation for Buffalo Springs, Lebanon Co., southeastern PA. Consists of dirty-white or pinkish-gray to medium-gray, crystalline limestone, commonly with laminae, alternating with yellowish-gray to light-olive-gray weathered dolomite and magnesian limestone; dolomite is fine to medium crystalline and commonly light gray on fresh surface; thin sandy limestone or silty limestone beds occur locally. Light-olive-gray weathering shaly limestone interbeds present in many outcrops. The white to pinkish-gray limestones commonly grade laterally into very light-gray limestone. Light-blue-gray limestone common near top of member. Estimated thickness more than 700 feet; base of member not exposed; partial type section is 247 feet thick. Underlies Snitz Creek member; unit is oldest exposed Cambrian limestone in quadrangle. The Buffalo Springs is of Late Cambrian age.
References

Berg, T.M., Edmunds, W.E., Geyer, A.R., and others, compilers, 1980, Geologic map of Pennsylvania: Pennsylvania Geological Survey, 4th ser., Map 1, 2nd ed., 3 sheets, scale 1:250,000.

Pennsylvania Bureau of Topographic and Geologic Survey, Department of Conservation and Natural Resources, Miles, C.E., and Whitfield, T.G., compilers, 2001, Bedrock Geology of Pennsylvania, edition: 1.0, digital map, scale 1:250,000.

USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/

https://ngmdb.usgs.gov/Geolex/search

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Counties Lancaster - York