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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 48 (1964)

Issue: 9. (September)

First Page: 1462

Last Page: 1474

Title: Stratigraphic and Structural Significance of Cretaceous Fossils from Tiglukpuk Formation, Northern Alaska

Author(s): David L. Jones (2), Arthur Grantz (2)

Abstract:

The presence of Buchia [= Aucella] sublaevis of Valanginian age at three localities within two units of different facies in the type Tiglukpuk Formation on Tiglukpuk Creek shows that most of this formation is of Early Cretaceous rather than of Jurassic age. The presence of Buchia okensis and B. subokensis of Early Cretaceous (Berriasian) age in the Okpikruak Formation shows that the Tiglukpuk Formation is younger than the Okpikruak Formation, which overlies it structurally. These age and structural relations suggest that thrust faults have juxtaposed different sequences of Buchia-bearing strata in the Tiglukpuk Creek and probably elsewhere in northern Alaska and that the Tiglukpuk Formation should be either greatly revised or abandoned.

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