The Little Falls Formation or Little Falls Dolostone is a

geologic formation A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exp ...

New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...

. The unit is of

Cambrian The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million ...

age and rests unconformably on Precambrian rock. The unit is noted as the host for the

Herkimer diamond Herkimer diamonds are double-terminated quartz crystals discovered within exposed outcrops of dolomite in and around Herkimer County, New York and the Mohawk River Valley. Not actually diamonds, the "diamond" in their name is due to both their c ...

s of New York.''Herkimer Diamonds,''
MAGS Explorer, V. 2 No. 7, pp. 1-3, July 11, 2003Muskatt, H.S., and Tollerton, V.P., Jr., 1992, The Little Falls Dolostone (Late Cambrian); stratigraphy and mineralogy, IN April, R.H., ed., Field trip guidebook: New York State Geological Association Guidebook, 64th annual meeting, Hamilton, NY, September 18–20, 1992, no. 64, p. 200-215 as quoted i

/ref> The unit contains

stromatolite Stromatolites () or stromatoliths () are layered sedimentary formations (microbialite) that are created mainly by photosynthetic microorganisms such as cyanobacteria, sulfate-reducing bacteria, and Pseudomonadota (formerly proteobacteria). The ...

s and rare

brachiopod Brachiopods (), phylum Brachiopoda, are a phylum of trochozoan animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Brachiopod valves are hinged at the rear end, w ...

fossils.

References

* Cambrian geology of New York (state) Cambrian southern paleotemperate deposits {{NewYork-geologic-formation-stub

See also

References