Manlius Limestone The
Manlius Limestone was first noted by Vanuxem (1840, p. 372) as a "waterlime" (hydraulic limestone) near
Manlius, New York. The Manlius is composed of
limestone,
grainstone,
calcareous mudstone and
bindstone. The Manlius is 419 - 411 Ma. The Thacher Member of the Manlius extends along eastern New York and down into parts of northern New Jersey. It is characterised as a "ribbon rock", meaning it contains very thin layers of alternating limestone and
argillaceous rock. The color of the Thacher is dark blueish-black. The limestone is fine- to medium-grained. It averages thick. It makes up the upper part of the Manlius in New York State and makes up the entirety of the Manlius in northeastern New Jersey. Moving southwest, it become more
argillaceous and
arenaceous as it grades into Depue Limestone. The Thacher contains fossils of
stromatoporoids,
crinoids,
rugose corals,
tabulate corals,
tranchiopods,
tentaculitids, and
ostracodes. == References ==