UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY NEW BIOSTRATIGRAPHIC RESULTS OF DREDGING AND DART CORING IN THE WESTERN GULF OF ALASKA AND THEIR TECTONIC IMPLICATIONS NEW BIOSTRATIGRAPHIC RESULTS OF DREDGING AND DART CORING IN THE WESTERN GULF

• Main Authors: Patrick Ii Mcclellan, Michael A Fisher, John A Barren, Robert E Arnal, Stanley A Kling, George W Moore, Patrick H Mcclellan, John A Barron
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Gulf of Alaska; Kodiak; Alaska
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1062.5168

ABSTRACT Age determinations are reported for microfossils from 21 dredge recoveries and 8 dart cores , and for megainvertebrate fossils from 4 dredge recoveries, collected in 1979 from the outer part of.the Kodiak shelf and the // nearby upper continental slope. The ages tend to confirm a previous conclusion that the oldest rocks exposed in this vicinity are middle Miocene in age and that they form the deep portion of a landward-younging Miocene through Quaternary sequence in a structural high beneath the shelf edge and on the upper slope. The new microfossil data indicate that the shelf break structure is a faulted anticline in which the middle Miocene through lower Pliocene part of the exposed stratigraphic sequence has been repeated by vertical faulting since the early or middle Pliocene.