Detrital zircon ages from upper Paleozoic–Triassic clastic strata on St. Lawrence Island, Alaska: An enigmatic component of the Arctic Alaska–Chukotka microplate

Thermal Evolution and Provenance Revealed through Detrital Zircon Fission Track Dating of the Upper Cretaceous Shumagin Formation, Nagai Island, Alaska

Wrangellia Superterrane. The Paleozoic to Mesozoic Wrangellia superterrane (Insular terrane) consists of intraoceanic volcanic assemblages and basement rocks of the Peninsular, Wrangellia, and Alexander terranes (Plafker et al, 1994). The magmatic-arc assemblages of the Peninsular terrane appear to have been built upon the Wrangellia composite terrane prior to the midCretaceous and include: 1) ...

Polychlorinated biphenyls in serum of the Siberian Yupik people from St. Lawrence Island, Alaska.

OBJECTIVES To determine serum levels of polychlorinated biphenyls (PCBs) in Siberian Yupik adults from St. Lawrence Island, Alaska, and to determine the relative contribution of atmospheric transport of PCBs and local contamination to body burdens. STUDY DESIGN Siberian Yupiks of various ages were recruited from three populations: residents of the village of Gambell, residents of the village ...

Environmental contamination of the Yupik people of St. Lawrence Island, Alaska

Origin of Ice Ages: Pollen Evidence from Arctic Alaska.

Pollen analysis of radiocarbon-dated samples from the arctic coastal plain of Alaska shows that vegetation of 14,000 years ago reflected a climate colder than the present, and that there has been a progressive warming, culminating in the present cold arctic climate. The record indicates that the Arctic Ocean has been covered with ice since the time of the Wisconsin glacial maximum, suggesting t...

DETRITAL ZIRCON U/Pb AGE DETERMINATION: UNDERSTANDING THE PROVENANCE OF THE LATE- CRETACEOUS SHUMAGIN FORMATION, ALASKA

The Chugach-Prince William (CPW) terrane is an Upper Cretaceous to Eocene accretionary complex exposed for ~2200 km in southern Alaska, extending from Baranof Island in the east to Sanak Island in the west. One of the thickest subduction-related accretionary complexes in the world, the CPW terrane is composed of deep-water flysch and associated volcanic rocks and is intruded by near-trench plut...