Also known as Reef 1431

Where: Grant County, Indiana (40.4° N, 85.8° W: paleocoordinates 28.8° S, 48.6° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Pipe Creek Jr. Reef Member (Wabash Formation), Ludfordian (425.6 - 423.0 Ma)

• time subdivision given as Niagaran-Cayugan, or Wenlock-upper Ludlow. PJW: Was Silurian; however, Pipe Creek Jr. Reef is a subdivision of the Wabash formation. Simo & Lehman (2000: J. Sedimentary Research 70(4):937-951) place it as it middle Ludlow; as the Wabash is thought to go from Ludfordian - Pridoli, I have it as Ludfordian.

• member-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; shelly/skeletal, gray, argillaceous grainstone and packstone

Size class: macrofossils

Collection methods: surface (in situ), chemical, peel or thin section,

• while not explicitly stated, it appears that fossils reported are those collected during field work in the quarry, not from state survey drill cores that were studied; fossils were collected in situ whenever possible, but the majority came from rock blasted from the SNW end of the quarry. This work was completed about one year after the quarry opened for business

Primary reference: D. M. Suchomel. 1975. Paleoecology and Petrology of Pipe Creek Jr. Reef (Niagaran-Cayugan), Grant County, Indiana. 1-38 [A. Miller/K. Layou/M. Uhen]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 6706: authorized by Arnold Miller, entered by Karen Layou on 10.03.2000

Creative Commons license: CC BY (attribution)