منابع مشابه
Exposure dating of Late Glacial and pre-LGM moraines
Exposure dating of Late Glacial and pre-LGM moraines in the Cordon de Doña Rosa, Northern/Central Chile (∼31 S) R. Zech, C. Kull, P. W. Kubik, and H. Veit Geographical Institute, University of Bern, Hallerstr. 12, 3012 Bern, Switzerland PAGES IPO, Sulgeneckstrasse 38, 3007 Bern, Switzerland Paul Scherrer Institute c/o Institute of Particle Physics, ETH Zurich, 8093 Zurich, Switzerland Received:...
متن کاملModeling the statistical distributions of cosmogenic exposure dates from moraines
Geomorphic process modeling allows us to evaluate different methods for estimating moraine ages from cosmogenic exposure dates, and may provide a means to identify the processes responsible for the excess scatter among exposure dates on individual moraines. Cosmogenic exposure dating is an elegant method for estimating the ages of moraines, but individual exposure dates are sometimes biased by ...
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...
متن کاملLate Pleistocene and Holocene Moraines in the Sagarmatha (Everest) Region, Khumbu Himal*
Detailed field mapping of moraines in the Sagarmatha (Everest) region of the Nepal Himalayas indicates that there are four stages of glacial advance. The Lobuche stage moraines are fresh and sparsely covered with vegetation, which contact the dirty terminus of glaciers. The Thuklha stage moraines which are covered with soil and vegetation are located just outside of the Lobuche stage moraines. ...
متن کاملRelative Ages of Pleistocene Moraines Discerned from Pebble Counts: Eastern Sierra Nevada, California
A modified Wolman pebble count, traditionally used in fluvial science, is used to assess relative ages for glacial moraines at Bloody and Sawmill canyons, eastern California. Results show statistically separable size distributions among surface deposits of five known moraine groups, with finer distributions associated with older deposits. Large variance in clast size prevents robust distinction...
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ژورنال
عنوان ژورنال: Geological Magazine
سال: 1890
ISSN: 0016-7568,1469-5081
DOI: 10.1017/s001675680019003x