New biostratigraphic results of dredging and dart coring in the western Gulf of Alaska and their tectonic implications
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Open-File Report↗
Geology topics
John A. Barron
Publications and source records attributed to John A. Barron.
Marine diatom and silicoflagellate biostratigraphy of the type Delmontian Stage and the type Bolivina obliqua Zone, California
Investigation of the marine diatom and silicoflagellate biostratigraphy of the type Delmontian Stage and and type Bolivina obliqua Zone in California shows that the type Delmontian Stage is equivalent to part of the supposedly older Mohnian Stage and is early late Miocene. The type Bolivina obliqua Zone, which conformably overlies the type Mohnian Stage, appears to be early Pliocene.
California↗