Reports: B8 42533-B8: Eifelian-Givetian Stage boundary (Middle Devonian) in the Appalachian and Michigan basins

D. Jeffrey Over, State University of New York at Geneseo

Three students funded by the grant, and myself, worked on the Eifelian-Givetian boundary project in the summer of 2010; two others were funded for part-time work in Fall 2009.  Seven sections in New York State, two in Pennsylvania, and three in Maryland and West Virginia, that likely contain the stage boundary interval were measured, described, and collected.  Additional work was done on materials collected last year and on a drill core from West Virginia.  The localities visited and collected include:

Oatka Creek, NY – Stafford LimestoneHanson Honeoye Falls Quarry, NY – Onondaga Formation, Union Springs, Cherry Valley

Seneca Stone Quarry, NY - Onondaga Formation, Union Springs, Cherry Valley, East Berne, Chittenango

Flint Creek, NY - Union Springs, Cherry Valley, East Berne, Chittenango, Stafford

Chestnut Street at Cherry Valley, NY - Union Springs, Cherry Valley, East Berne

Stockbridge Falls on Oneida Creek, NY - Union Springs, Cherry Valley, East Berne

Conesus Creek at Ashantee, NY – Stafford

Licking Creek, Felton County, PA – Marcellus

Chillisquaque Creek, Washingtonville, PA – Union Springs, Cherry Valley

Mt. Hermon Church, Cumberland, MD - Marcellus

21st Bridge Road, MD – Onondaga, Marcellus

Keyser Water Treatment Plant, WV - Marcellus

Tentaculitids, conodonts, and magnetic susceptibility samples were collected from the Seneca Member of the Onondaga Limestone, Union Springs Formation, Cherry Valley, East Berne, and Chittenango members of the Oatka Creek Formation, and the Stafford Member of the Skaneateles Formation in New York State and Pennsylvania.  At present it seems that there is a discernable change in the polygnathid conodont fauna across the Eif-Giv boundary which may have regional or global significance.

 
Moving Mountains; Dr. Surpless
Desert Sea Fossils; Dr. Olszewski
Lighting Up Metals; Dr. Assefa
Ecological Polymers; Dr. Miller