Geologic studies in Alaska by the U.S. Geological Survey, 1992

Bulletin 2068
Edited by: Cynthia Dusel-Bacon and Alison B. Till



This collection of 19 papers continues the annual series of U.S. Geological Survey reports on the geology of Alaska. The contributions, which include full-length Articles and shorter Geologic Notes, cover a broad range of topics including dune formation, stratigraphy, paleontology, isotopic dating, mineral resources, and tectonics. Articles, grouped under four regional headings, span nearly the entire State from the North Slope to southwestern, south-central, and southeastern Alaska (fig. 1).

In the section on northern Alaska, Galloway and Carter use new data on dune morphology and radiocarbon ages from the western Arctic Coastal Plain to develop a late Holocene chronology of multiple episodes of dune stabilization and reactivation for the region. Their study has important implications for climatic changes in northern Alaska during the past 4,000 years. In two papers, Dumoulin and her coauthors describe lithofacies and conodont faunas of Carboniferous strata in the western Brooks Range, discuss depositional environments, and propose possible correlations and source areas for some of the strata. Schenk and Bird propose a preliminary division of the Lower Cretaceous stratigraphic section in the central part of the North Slope into depositional sequences. Aleinikoff and others present new U-Pb data for zircons from metaigneous rocks from the central Brooks Range. Karl and Mull, reacting to a proposal regarding terrane nomenclature for northern Alaska that was published in last year's Alaskan Studies Bulletin, provide a historical perspective of the evolution of terminology for tectonic units in the Brooks Range and present their own recommendations.

Publication type Report
Publication Subtype USGS Numbered Series
Title Geologic studies in Alaska by the U.S. Geological Survey, 1992
Series title Bulletin
Series number 2068
DOI 10.3133/b2068
Year Published 1993
Language English
Publisher U.S. Government Printing Office
Publisher location Washington, D.C.
Contributing office(s) Alaska Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Description vi, 250 p.
Country United States
State Alaska
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