Tukwila Formation: Difference between revisions

Tukwila Formation
Tukwila Formation
Stratigraphic range: Bartonian
Type	Geological formation
Location
Region	Washington
Country	USA
Type section
Named for	Tukwila, Washington

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King County Geologic Cross Section

The Tukwila Formation is a geological formation in King County, Washington within the Puget Group. It is named after Tukwila area, which is close to the formation. The formation consists of various fossils of marine origin.^[1]

The Tukwila Formation is mainly composed of andesitic to dacitic volcanic sandstone, siltstone, shale, tuff-breccia, tuff, lahar, and carbonaceous shales. The tuff-breccia has an approximate age of 42 Ma.^[2]

Fauna

Vertebrate fauna

Vertebrate fauna mainly consists of just shark remains. Mainly one unnamed species of Goblin shark and one unnamed species belonging to the same genus as the Whitetip reef shark.^[3]^[4]

Triaenodon.sp
Mitsukurina.sp

Invertebrate fauna

Are the following:^{[citation needed]}

? Coeloma martinezensis
Zanthopsis vulgaris
Terebratulina washingtoniana
Protula sp.
Glycymeris saggittata
Venericardia clarki
Colwellia bretzi
Brisaster sp.

References

^ "STRATIGRAPHY OF EOCENE ROCKS IN A PART OF KING COUNTY, WASHINGTON" (PDF). U. S. Geological Survey, Menlo Park, California.
^ Booth, Derek; Walsh, Timothy; Troost, Kathy; Shimel, Scott. "Geologic Map of the East Half of the Bellevue South 7.5' x 15' Quadrangle, Issaquah Area, King County, Washington,U.S. Geological Survey Scientific Investigations Map 3211, scale 1:24,000" (PDF). USGS. Retrieved 27 May 2020.
^ "Marine Fauna of the Middle Eocene Tukwila Formation, King County". 26. 1998. {{cite journal}}: Cite journal requires |journal= (help)
^ "Western King County Tukwila Checklist (Eocene of the United States)". PBDB.

This article about a specific stratigraphic formation in the United States is a stub. You can help Wikipedia by expanding it.

[1] "STRATIGRAPHY OF EOCENE ROCKS IN A PART OF KING COUNTY, WASHINGTON" (PDF). U. S. Geological Survey, Menlo Park, California.

[2] Booth, Derek; Walsh, Timothy; Troost, Kathy; Shimel, Scott. "Geologic Map of the East Half of the Bellevue South 7.5' x 15' Quadrangle, Issaquah Area, King County, Washington,U.S. Geological Survey Scientific Investigations Map 3211, scale 1:24,000" (PDF). USGS. Retrieved 27 May 2020.

[3] "Marine Fauna of the Middle Eocene Tukwila Formation, King County". 26. 1998. {{cite journal}}: Cite journal requires |journal= (help)

[4] "Western King County Tukwila Checklist (Eocene of the United States)". PBDB.

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 | prilithology   =
 | otherlithology =
-| namedfor       =
+| namedfor       =[[Tukwila, Washington]]
 | namedby        =
 | region         = {{flag|Washington}}
-| country        =
+| country        = {{Flag|USA}}
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 [[File:King County Geologic Cross Section.jpg|thumb|300px|King County Geologic Cross Section]]
 [[File:King County Geologic Map.jpg|thumb|300px|King County Geologic Map]]
-The '''''Tukwila Formation''''' is a geological formation in [[King County, Washington]] within the [[Puget Group]]. It is named after Tukwila area, which is close to the formation. The formation consists of various fossils of marine origin.<ref>{{cite journal |title=STRATIGRAPHY OF EOCENE ROCKS IN A PART OF KING COUNTY, WASHINGTON |journal=U. S. Geological Survey, Menlo Park, California |url=http://www.dnr.wa.gov/Publications/ger_ri21_strat_eocene_king_co.pdf}}</ref>
+The '''Tukwila Formation''' is a [[geological formation]] in [[King County, Washington]] within the [[Puget Group]]. It is named after [[Tukwila, Washington|Tukwila]] area, which is close to the formation. The formation consists of various fossils of marine origin.<ref>{{cite journal |title=STRATIGRAPHY OF EOCENE ROCKS IN A PART OF KING COUNTY, WASHINGTON |journal=U. S. Geological Survey, Menlo Park, California |url=http://www.dnr.wa.gov/Publications/ger_ri21_strat_eocene_king_co.pdf}}</ref>
-The Tukwila formation is mainly composed of [[andesitic]] to [[dacitic]] [[volcanic]] [[sandstone]], [[siltstone]], [[shale]], [[tuff]]-[[breccia]], tuff, [[lahar]], and carbonaceous shales.  The tuff-breccia has an approximate age of 42 [[megaannum|Ma]].<ref>{{cite web |last1=Booth |first1=Derek |last2=Walsh |first2=Timothy |last3=Troost |first3=Kathy |last4=Shimel |first4=Scott |title=Geologic Map of the East Half of the Bellevue South 7.5' x 15' Quadrangle, Issaquah Area, King County, Washington,U.S. Geological Survey Scientific Investigations Map 3211, scale 1:24,000. |url=https://pubs.usgs.gov/sim/3211/sim3211_sheet.pdf |website=USGS |accessdate=27 May 2020}}</ref>
+The Tukwila Formation is mainly composed of [[andesitic]] to [[dacitic]] [[volcanic]] [[sandstone]], [[siltstone]], [[shale]], [[tuff]]-[[breccia]], tuff, [[lahar]], and carbonaceous shales.  The tuff-breccia has an approximate age of 42 [[megaannum|Ma]].<ref>{{cite web |last1=Booth |first1=Derek |last2=Walsh |first2=Timothy |last3=Troost |first3=Kathy |last4=Shimel |first4=Scott |title=Geologic Map of the East Half of the Bellevue South 7.5' x 15' Quadrangle, Issaquah Area, King County, Washington,U.S. Geological Survey Scientific Investigations Map 3211, scale 1:24,000. |url=https://pubs.usgs.gov/sim/3211/sim3211_sheet.pdf |website=USGS |accessdate=27 May 2020}}</ref>
 ==Fauna==
@@ Line 50: / Line 50: @@
 [[Category:Eocene United States]]
+[[Category:Tuff formations]]
+[[Category:Shale formations]]
+[[Category:Lahars]]
+[[Category:Puget Group]]
 {{US-geologic-formation-stub}}