Sunrise Formation

Sunrise Formation
Sunrise Formation
Stratigraphic range: Hettangian-Sinemurian; ~201–191 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Sub-units	Ferguson Hill & New York Canyon members
Overlies	Gabbs Formation
Lithology
Primary	Limestone
Other	Shale, siltstone, sandstone
Location
Coordinates	38°30′N 118°06′W / 38.5°N 118.1°W
Approximate paleocoordinates	19°30′N 56°12′W / 19.5°N 56.2°W
Region	Nevada
Country	United States
Extent	Gabbs Valley Range
	Sunrise Formation (the United States) 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:

Taylor, D.; Guex, J. (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.; Guex, J. (2002), "The Triassic/Jurassic System boundary in the John Day Inlier, east-central Oregon", Oregon Geology, 64: 3–28
Taylor, D.G (1998), "Late Hettangian-early Sinemurian (Jurassic) ammonite biochronology of the western Cordillera, United States", Geobios, 31 (4): 467–497, Bibcode:1998Geobi..31..467T, doi:10.1016/S0016-6995(98)80120-4
Guex, J (1995), "Ammonites hettangiennes de la Gabbs Valley Range (Nevada, USA)", Mémoires de Géologie (Lausanne), 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