USGS-M6298 (Buchia Ridge) (Cretaceous of the United States)
Where: Alaska (59.3° N, 159.8° W: paleocoordinates 48.5° N, 97.4° W)
When: Buchia Ridge Formation, Valanginian (140.2 - 136.4 Ma)
Environment/lithology: sandstone and conglomerate
• lithology described as thick-bedded greywacke with interbeds of conglomerate and siltstone
Reposited in the USGS
Primary reference: J. M. Hoare and W. L. Coonrad. 1983. Greywacke of Buchia Ridge and Correlative Lower Cretaceous Rocks in the Goodnews Bay and Bethel Quadrangles, Southwestern Alaska. U.S. Geological Survey Bulletin 1529-C C1-C17 [M. Patzkowsky/K. Layou/A. Clement] more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 2383: authorized by Mark Patzkowsky, entered by Karen Layou on 02.07.1999