Where: Pender County, North Carolina (34.6° N, 77.8° W: paleocoordinates 34.5° N, 68.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Castle Hayne Formation, Bartonian (41.3 - 38.0 Ma)

• Castle Hayne lies unconformably over the PeeDee Formation.

•

•Age updated to Bartonian:

•GSA Bulletin; March 1984; v. 95; no. 3; p. 364-370

•Rb-Sr glauconite isochron of the Eocene Castle Hayne Limestone, North Carolina; further discussion

•William A. Berggren, and M. P. Aubry (Comment to paper by Harris and Zullo)

•An examination of the calcareous nannoplankton and planktonic foraminifera of the lectostratotype Castle Hayne Formation, New Hanover County, North Carolina, has shown that it is of late middle Eocene age (upper zone NP16 to lower NP17 and P12-13, respectively), rather than latest Eocene (Zone NP19-20) as has been reported recently. Dinoflagellate biostratigraphy supports this age assignment. A Rb-Sr glauconite isochron date of 34.8 + or - 1 Ma reported from the lectostratotype in support of an age estimate of about 33 Ma for the Eocene-Oligocene boundary is shown to be irrelevant to the boundary age problem, anomalously young, and, indeed, about 8 to 10 m.y. younger than the age estimated on the basis of magnetobiochronology.--Modified journal abstract.

•

•original paper by Harris and Zullo, Geological Society of America Bulletin: Vol. 91, No. 10, pp. 587–592.

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, shelly/skeletal limestone

Size class: macrofossils

Reposited in the CM

Collection methods: surface (float), surface (in situ), mechanical

Primary reference: R. M. Feldmann, K. L. Bice, C. Schweitzer Hopkins, E. W. Salva, and K. Pickford. 1998. Decapod crustaceans from the Eocene Castle Hayne Formation, North Carolina: paleoceanographic implications. Journal of Paleontology 72(Supplement):1-28 [L. Ivany/E. Kowalski/M. Clapham]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 7298: authorized by Linda Ivany, entered by Elizabeth Kowalski on 23.05.2000

Creative Commons license: CC BY (attribution)