Tyee Formation - Wikipedia
The Tyee Formation is a geologic formation in Oregon. It preserves fossils dating back to the Paleogene period.
Oregon's Fossil Heritage - University of Oregon
Fossils from Oregon, acquired largely on student field trips over the past three decades, have been collected within a modern geological framework and with benefit of accurate topographic maps and GPS technology.
Geolex — Tyee publications
2024年4月4日 · To north, grades laterally into lower part of Yamhill Formation. Fossils. Age is middle Eocene (probably late middle Eocene), based on stratigraphic relations and fossils. Forms bulk of exposures of central Coast Range of Oregon from latitude of Salem southward to latitude of Myrtle Point; south of Myrtle Point exposures are isolated.
Tectonics and paleogeography of a post-accretionary
2021年9月24日 · The Umpqua Basin predates accretion of Siletzia and is clearly a distinct tectonic episode. The Tyee, Coos Bay, and Sutherland “basins” are geographically distinct areas of coeval but of differentially preserved strata of the early deposition of the pre-arc and forearc Cascadia Basin.
Tyee Formation: Undeformed Turbidites and their Lateral …
The facies and mineralogy of the Tyee Formation of middle Eocene age in the Oregon Coast Range are used to define a paleogeography of part of western Oregon. The formation consists largely of undeformed and unmetamorphosed sandstones, which would be called gray-wackes or wackes by most classifiers.
Tyee Sandstone - Wikipedia
The Tyee Sandstone is a geologic formation in Oregon. It preserves fossils. Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
Distal-basin-floor-fan Deposits of the Middle Eocene Tyee Formation ...
2008年1月1日 · The middle Eocene Tyee Formation was deposited in the Oregon Coast Range fore-arc basin (Figure 1). Heller and Ryberg (1983) and Ryu and Niem (1999) describe the Tyee Formation as part of a 6-km (3.7-mi)-thick package of sedimentary rocks that rests unconformably on the Paleocene Siletz River Volcanics (Figure 2).
Our dating and compilation of plant and molluscan fossil occurrences indicate a steady rise in species diversity from 46 Ma to maximal diversity of thermophilic taxa at 35–34 Ma, then extinctions of 60% of plant species after 33.4 Ma and 32% of marine invertebrates after 33.2 Ma, both signifi cantly postdating the Eocene-Oligocene boundary at 33...
15 Places to Dig for Fossils in Oregon - RareGoldNuggets.com
2017年8月25日 · This remote corner of Southeastern Oregon you can find some nice leaf fossils. Explore chalky hillsides around the towns of Fields, Oregon to Denio, Nevada. Split apart layers of clay material for leaf imprints for your collection. Next: 7 …
The Tyee Formation also records a fascinating story of active continental margin tectonics. Field trip participants will quickly discover Tyee sandstone to be
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