منابع مشابه
Glacial Geology of the Northern Uinta Mountains
Glacial deposits on the north slope of the Uinta Mountains were investigated through map and air photo interpretation combined with fi eld mapping. Deposits representing the Smiths Fork (local Pinedale equivalent), Blacks Fork (Bull Lake equivalent) and pre-Blacks Fork Glaciations are present in the form of terminal and lateral moraines, ground moraine, and outwash valley trains. Nineteen separ...
متن کاملGlacial Geology of the Southern Uinta Mountains
It has been known for over a century that the Uinta Mountains contained numerous alpine glaciers during parts of the Quaternary Period, yet until recently, the glacial record on the south side of the range had received little scientifi c attention. Results of recent 1:24,000-scale fi eld mapping of surfi cial deposits in the southern Uinta Mountains indicate that glaciers in the southwestern an...
متن کاملGlacial Geology of Cape Bird, Ross Island, Antarctica
Located on the northwest coast of Ross Island in McMurdo Sound, Cape Bird features virtually unweathered surface drift with erratics from the Transantarctic Mountains (TAM) and with enclosed marine shell fragments. This Cape Bird drift is cut by Holocene beaches. The chronology of drift deposition and beach formation comes from AMS radiocarbon dates of associated marine shells, and of penguin b...
متن کاملSurface Exposure Geochronology Using Cosmogenic Nuclides: Applications in Antarctic Glacial Geology
by EDWARD JEREMY BROOK B. S., Duke University, 1985 M. S., University of Montana, 1988 submitted in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY and the WOODS HOLE OCEANOGRAPHIC INSTITUTION September 1993 © Edward J. Brook 1993 The author hereby grants to MIT and WHOI permission to reproduce and distribute copies of ...
متن کاملLate Pleistocene Glacial Geology of the Okpilak-Kongakut Rivers Region, Northeastern Brooks Range, Alaska
Glacial mapping combined with cosmogenic exposure dating provides the first detailed assessment of the late Pleistocene glacial history in the northeastern Brooks Range, Alaska. Former ice limits were identified in the Okpilak, Jago, Aichillik, Egaksrak, and Kongakut River valleys. Relative-weathering data support our correlations with the wellstudied glacial sequence of the central Brooks Rang...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1907
ISSN: 0036-8733
DOI: 10.1038/scientificamerican08031907-78supp