Bayport Chert
date: label: Accession Date
content: 29 Dec 2016
label: Collection Date
content: Jun 1990
name: label: Collector
content: J. D. Holland
label: Donor Name
content: Estate Of John D. Holland
notes: label: Notes
content: L-302 (Bayport Chert): Unknown collection procedure. Collection includes raw material, outer surface, and naturally-weathered specimens.
label: Notes
content: L-302 (Bayport Chert)
label: Notes
content: Bayport chert, also known as Charity Island, is a Blue gray (N7 to N5), light gray (10YR7/2), light brownish gray (10YR6/2), gray (10YR6/1) fossiliferous chert. It is medium to fine grained in texture, and becomes Light to dark brown (10YR6/4, 10YR5/4, 10YR4/4, 10YR34/4) when weathered with a chalky cortex. Deposited in Cannonball nodules, irregular nodules, and tabular.
label: Notes
content: Geology remarks: Epoch- Mississippian, Series- Late Mississippian, Stage- Meramecian, Group- Grand Rapids, Form- Bayport Limestone.
label: Notes
content: Location remarks: Concentric nodules of chert, Huron Co., MI. Deposited in round cannon ball-like nodules in limestone. Arenac, Bayport, Huron, Tuscola counties of east central lower Michigan. Bay County Quarry, Bessinger Rd. 0.5 miles east of Augares, Arenac Co., MI, Charity Island, Saginaw Bay, MI.
label: Notes
content: Archaeology remarks: Heron Site, Late Woodland period; all cultures; Saginaw Valley, Michigan; Carodoc Site
label: Record Last Modified
content: 22 Nov 2019
label: Specimen Count
content: 8
place: label: Place
content: AuGres (near), Arenac County, Michigan, United States, North America
topic: label: Topic
content: Archaeology
setName: label: See more items in
content: Anthropology
dataSource: label: Data Source
content: NMNH - Anthropology Dept.
identifier: label: Accession Number
content: 2071475
label: USNM Number
content: A598569-0
objectType: label: Object Type
content: Stone