Where: Quebec, Canada (48.8° N, 64.5° W: paleocoordinates 26.6° S, 29.7° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Indian Point Formation, Ludlow (427.4 - 423.0 Ma)
• Formation assignment is given as questionable.
• formation-level stratigraphic resolution
Environment/lithology: transition zone or lower shoreface; sandstone
•SEP environmental call based on limited given info and following:
•
•Wilson (2002). Mineral Resource Report 155-196. Report mainly on New Brunswick, but Gaspe Indian Point cited as similar litho/age.
• "...the Indian Point Formation comprises thin- to thick-bedded, locally fossiliferous, calcareous siltstone, fine-grained sandstone, calcarenite, and minor biostromal limestone, conglomerate, red siltstone, and mafic volcanic rocks. The Indian Point Formation is conformably overlain by within-plate tholeiitic mafic to intermediate flows and flow breccias of the Archibald Settlement Formation....developed as a synsedimentary normal fault in the Late Silurian, based on the presence of polymictic conglomerate beds in a thickened Indian Point section east of the fault. Post-Early Devonian (Acadian) orogenic events have produced open to close folds with northeast-trending axes..."
Primary reference: R. E. Plotnick. 1999. Habitat of Llandoverian-Lochkovian eurypterids. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities - a case study from the Silurian and Lower Devonian 106-136 [M. Foote/M. Foote/P. Wagner]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 14198: authorized by Michael Foote, entered by Michael Foote on 23.05.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
| Euchelicerata | |
|
Waeringopterus sp. Leutze 1961 eurypterid | |
| Pterobranchia | |
|
Monograptus nilssoni graptolite | |