The Port Orford Formation is a geologic formation in Oregon. It preserves fossils.[citation needed] It consists of beds lying unconformably between the Empire Formation and overlying terrace deposits.[1] The formation is composed of a basal bed of buff (yellow-brown) sand, overlain by a layer of conglomerate, and layer of rusty sand grading upward into blue-gray argillaceous sand, which is then truncated by the sea, on top of which are the Elk River Beds.[1] The name was proposed by Ewart M. Baldwin in 1945.[2][1]
| Port Orford Formation | |
|---|---|
| Type | Formation |
| Underlies | Elk River Formation |
| Overlies | Empire Formation |
| Lithology | |
| Primary | Sand, Conglomerate |
| Location | |
| Region | Oregon |
| Country | United States |
See also
edit
References
edit- ^ a b c "USGS Geologic Names Committee Archives: Port Orford Formation". National Geologic Map Database. United States Geologic Survey.
- ^ Baldwin, Ewart M (1945). "Some Revisions Of The Late Cenozoic Stratigraphy Of The Southern Oregon Coast". Journal of Geology. 53 (1): 35 – via Internet Archive.
Bibliography
edit- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
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