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Map showing publication footprint
  • Usage in publication:
    • Jago River Formation
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Conglomerate
    • Sandstone
    • Siltstone
    • Shale
    • Coal
  • AAPG geologic province:
    • Arctic Coastal Plains province
Publication:

Buckingham, M.L., 1987, Fluvio-deltaic sedimentation patterns of the Upper Cretaceous to lower Tertiary Jago River Formation, Arctic National Wildlife Refuge (ANWR), northeastern Alaska, IN Tailleur, I.L., and Weimer, Paul, eds., Alaskan North Slope geology; Volume 1: Society of Economic Paleontologists and Mineralogists, Pacific Section, North Slope Seminar II, AAPG/SEPM/SEG Pacific Section annual meeting, Anchorage, AK, May 22-24, 1985, book 50, p. 529-540., Prepared by SEPM Pacific Section and Alaska Geol. Soc


Summary:

Pg. 529, 530, 532, 539. Jago River Formation. Formerly called informal Jago River beds. Consists of conglomerate, sandstone, siltstone, shale, coal; maximum 2861 m thick. Includes (descending) 215 m thick "D" [unit] of Paleocene age; 679 m thick "C" [unit] of Paleocene age; 1685 m thick "B" [unit] of Late Cretaceous age; and 282 m thick "A" [unit] of Late Cretaceous age. Strata distinct from coeval sediments in northern Alaska (Colville Group) and northwest Canada (Moose Channel and Reindeer Formations) [See also Moose Channel]. Age is Late Cretaceous to Paleocene, based on fossils (pollen, plants).
Type section: exposure along east bank of Sabbath Creek, 47 m south of Barter Island and village of Kaktovik, northeastern AK. Named from Jago River.

Source: GNC index card files (USGS-Menlo).


Map showing publication footprint
  • Usage in publication:
    • Jago River Formation
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Arctic Coastal Plains province
Publication:

Molenaar, C.M., Bird, K.J., and Kirk, A.R., 1987, Cretaceous and Tertiary stratigraphy of northeastern Alaska, IN Tailleur, I.L., and Weimer, Paul, eds., Alaskan North Slope geology; Volume 1: Society of Economic Paleontologists and Mineralogists, Pacific Section, North Slope Seminar II, AAPG/SEPM/SEG Pacific Section annual meeting, Anchorage, AK, May 22-24, 1985, book 50, p. 513-528., Prepared by SEPM Pacific Section and Alaska Geol. Soc


Summary:

Pg. 526. Jago River Formation. Predominantly nonmarine sandstone, conglomerate, siltstone, and shale with thin beds of coal. No pyroclastics observed. Anomalously thick. Overlies informal Cretaceous Arctic Creek unit (new). Correlates with Moose Channel Formation of Canada. Age is Late Cretaceous to Paleocene, based on fossils (pollen, plants).

Source: GNC index card files (USGS-Menlo).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).

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