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National Geologic Map Database
Geologic Unit: Chandler
Map showing publication footprint
  • Usage in publication:
    • Chandler formation*
  • Modifications:
    • Named
  • Dominant lithology:
    • Sandstone
    • Conglomerate
    • Shale
    • Coal
  • AAPG geologic province:
    • Alaska Northern region
Publication:

Gryc, George, Patton, W.W., Jr., and Payne, T.G., 1951, Present Cretaceous stratigraphic nomenclature of northern Alaska: Washington Academy of Sciences Journal, v. 41, no. 5, p. 159-167.


Summary:

Named as nonmarine formation in Nanushuk group. Type locality designated on Chandler River where river crosses Northern Foothills section, northern AK. Contains two major tongues (named), Hatbox and Niakogon tongues and several minor tongues (unnamed) which intertongue with Umiat formation (new) of Nanushuk group. In southern exposures consists mostly of sandstone and conglomerate. To north grades into shale with interbedded sandstone and coal. Is about 4700 ft thick. Overlies Tuktu member (new) of Umiat formation. Unconformably underlies Prince Creek formation (new) of Colville group. Is age equivalent of Umiat formation, Early Cretaceous and Early(?) Cretaceous.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Chandler formation*
  • Modifications:
    • Revised
    • Age modified
  • AAPG geologic province:
    • Alaska Northern region
Publication:

Detterman, R.L., 1956, New and redefined nomenclature of Nanushuk group, IN Gryc, George, and others, Mesozoic sequence in Colville River region, northern Alaska: American Association of Petroleum Geologists Bulletin, v. 40, no. 2, p. 233-244. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Lithologic unit remains much the same as originally defined by Gryc and others (1951), but lower tongue (Hatbox tongue) is renamed Killik tongue (new) and type locality for both tongues have been changed. Northward and eastward, Chandler formation intertongues and grades into its marine equivalents of Nanushuk group, Grandstand and Ninuluk formations (both new). Age is Early and Late Cretaceous based on age assigned to Niakogon tongue which overlies Ninuluk formation that contains abundant specimens of INOCERAMUS ATHABASKENSIS McLearn of late Cenomanian age.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Chandler formation*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Alaska Northern region

Map showing publication footprint
  • Usage in publication:
    • Chandler formation*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Alaska Northern region

Map showing publication footprint
  • Usage in publication:
    • Chandler Formation*
  • Modifications:
    • Reference
    • Age modified
  • AAPG geologic province:
    • Alaska Northern region
Publication:

Detterman, R.L., Reiser, H.N., Brosge, W.P., and Dutro, J.T., Jr., 1975, Post-Carboniferous stratigraphy, northeastern Alaska: U.S. Geological Survey Professional Paper, 886, 46 p.


Summary:

Reference section designated on Sabbath Creek, tributary of Jago River, northeastern AK. Thickness is 4775 ft. Lithologic description given in stratigraphic column. Age is considered middle and late Albian because Chandler Formation overlies early middle Albian PARAGASTROPLITES beds of Tuktu Formation. All Cretaceous beds in northern AK of Cenomanian or younger age contain abundant bentonite or tuff. Consequently Chandler in northeastern AK cannot be younger than late Albian [Early Cretaceous].

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Chandler Formation†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Alaska Northern region
Publication:

Mull, C.G., Houseknecht, D.W., and Bird, K.J., 2003, Revised Cretaceous and Tertiary stratigraphic nomenclature in the Colville basin, northern Alaska; Version 1.0: U.S. Geological Survey Professional Paper, 1673, 51 p., Prepared in cooperation with Alaska Dept. Nat. Resources, Div. Geol. Geophys. Surveys and Div. Oil and Gas [http://ngmdb.usgs.gov/Prodesc/proddesc_54811.htm]


Summary:

Pg. 5 (fig. 4), 6-8 (table 1), 12. †Chandler Formation of Nanushuk Group. Abandoned. Rocks reassigned to unnamed upper part (nonmarine) of Nanushuk Formation (revised). The †Killik and †Niakogon Tongues of the Chandler are also abandoned. [See Nanushuk.]

Source: Publication.


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 ([ ]).