Orogenic and glacial research in pristine southern Alaska
نویسندگان
چکیده
منابع مشابه
Pleistocene glacial history of the southern Ahklun Mountains, southwestern Alaska: Soil-development, morphometric, and radiocarbon constraints
Four new AMS 14C ages, glacial mapping, and measurements of soil development, loess thickness, and moraine morphology constrain the age and extent of at least three Quaternary advances by outlet lobes of an ice cap over the Ahklun Mountains of southwestern Alaska. The relative-age data are from 107 sites correlated to 25 ice-marginal positions in the Kanektok, Goodnews, Togiak, and Kulukak Rive...
متن کاملCrustal-scale structural architecture, shortening, and exhumation of an active, eroding orogenic wedge (Chugach/St. Elias Range, southern Alaska)
[1] Active mountain building associated with the accretion of the Yakutat microplate (YT) in southern Alaska is characterized through the combination of a new balanced cross section and new low-temperature cooling ages. This analysis constrains the amount and timing of shortening, the spatial and temporal trends of exhumation, and the interplay between structural development and exhumation. A f...
متن کاملSimilar glacial and Holocene Southern Ocean hydrography
We present new Holocene and glacial dO data measured on planktonic foraminifera Neogloboquadrina pachyderma and benthic foraminifera Cibicidoides species from the Atlantic and Pacific sectors of the Southern Ocean in order to better understand its glacial hydrography. Combined with previously published data, the latitudinal dO distributions of these foraminifera show no appreciable difference d...
متن کاملTwo Late-glacial Deposits in Southern Connecticut.
* Department of Genetics, University of Wisconsin, Paper No. 634. 1 G. B. L. Arner, Columbia Univ. Studies in History, Economics, and Public Law, 31, No. 3, 1-99, 1908. 2 H. J. Muller, Bull. N.Y. Acad. Med., 24, 447-469, 1948. 3 H. M. Slatis, Am. J. Human Genet., 6, 412-418, 1954. 4 J. Sutter and L. Tabah, Population, 7, 249-266, 1952; 8, 511-526, 1953. 5 S. M. Bemiss, Trans. Am. Med. Assoc., 1...
متن کاملA Review of Lichenometric Dating of Glacial Moraines in Alaska
In Alaska, lichenometry continues to be an important technique for dating late Holocene moraines. Research completed during the 1970s through the early 1990s developed lichen dating curves for five regions in the Arctic and subarctic mountain ranges beyond altitudinal and latitudinal treelines. Although these dating curves are still in use across Alaska, little progress has been made in the pas...
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ژورنال
عنوان ژورنال: Eos, Transactions American Geophysical Union
سال: 2001
ISSN: 0096-3941
DOI: 10.1029/01eo00112