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Tukwila Formation

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]

Tukwila Formation
Stratigraphic range: Bartonian
TypeGeological formation
Location
Region Washington
Country USA
Type section
Named forTukwila, Washington
King County Geologic Cross Section
King County Geologic Map

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 edit

Vertebrate fauna edit

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]

Invertebrate fauna edit

Are the following:[citation needed]

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

References edit

  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.

tukwila, formation, geological, formation, king, county, washington, within, puget, group, named, after, tukwila, area, which, close, formation, formation, consists, various, fossils, marine, origin, stratigraphic, range, bartoniantypegeological, formationloca. 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 Tukwila FormationStratigraphic range BartonianTypeGeological formationLocationRegion WashingtonCountry USAType sectionNamed forTukwila Washington King County Geologic Cross Section King County Geologic Map 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 Contents 1 Fauna 1 1 Vertebrate fauna 2 Invertebrate fauna 3 ReferencesFauna editVertebrate fauna edit 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 spInvertebrate fauna editAre the following citation needed Coeloma martinezensis Zanthopsis vulgaris Terebratulina washingtoniana Protula sp Glycymeris saggittata Venericardia clarki Colwellia bretzi Brisaster sp References edit 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 a href Template Cite journal html title Template Cite journal cite journal a Cite journal requires journal help Western King County Tukwila Checklist Eocene of the United States PBDB nbsp This article about a specific stratigraphic formation in the United States is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Tukwila Formation amp oldid 1211854133, wikipedia, wiki, book, books, library,

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