Sunrise Formation

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Sunrise Formation
Stratigraphic range: Hettangian-Sinemurian
~201–191 Ma
TypeFormation
Sub-unitsFerguson Hill & New York Canyon members
OverliesGabbs Formation
Lithology
PrimaryLimestone
OtherShale, siltstone, sandstone
Location
Coordinates38°30′N 118°06′W / 38.5°N 118.1°W / 38.5; -118.1Coordinates: 38°30′N 118°06′W / 38.5°N 118.1°W / 38.5; -118.1
Approximate paleocoordinates19°30′N 56°12′W / 19.5°N 56.2°W / 19.5; -56.2
RegionNevada
Country United States
ExtentGabbs Valley Range
Sunrise Formation is located in the United States
Sunrise Formation
Sunrise Formation (the United States)
Sunrise Formation is located in Nevada
Sunrise Formation
Sunrise Formation (Nevada)

The Sunrise Formation is a geologic formation in Nevada. It preserves fossils dating back to the Hettangian to Sinemurian stages of the Early Jurassic period.[1]

Fossil content[]

Among others, the following fossils have been reported from the formation:

Ammonites
Bivalves
Echinoids

See also[]

References[]

  1. ^ Sunrise Formation at Fossilworks.org
  2. ^ Guex, 1995
  3. ^ a b Taylor & Guex, 2021
  4. ^ a b c d e Taylor, 1998
  5. ^ Taylor & Guex, 2002
  6. ^ a b c d Poulton, 1979

Bibliography[]

  • Taylor, D., and J. Guex. 2021. Early Sinemurian ammonoids and biochronology of the Sunrise Formation, New York Canyon, Mineral County, Nevada. New Mexico Museum of Natural History and Science Bulletin 82. 371–391.
  • Taylor, D., and J. Guex. 2002. The Triassic/Jurassic System boundary in the John Day Inlier, east-central Oregon. 64. 3-28.
  • Taylor, D.G. 1998. Late Hettangian-early Sinemurian (Jurassic) ammonite biochronology of the western Cordillera, United States. Geobios 31. 467-497.
  • Guex, J. 1995. Ammonites hettangiennes de la Gabbs Valley Range (Nevada, USA). 27. 1-131.
  • Poulton, T. P. 1979. Jurassic Trigoniid Bivalves from Canada and Western United States of America. Geological Survey of Canada Bulletin 282. ..
  • Jesionek-Szymanska, W. 1970. On a new pygasterid (Echinoidea) from the Jurassic (middle Lias) of Nevada, U.S.A.. Acta Palaeontologica Polonica 15. 411-419.
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