Matches in SemOpenAlex for { <https://semopenalex.org/work/W3014623217> ?p ?o ?g. }
- W3014623217 endingPage "107196" @default.
- W3014623217 startingPage "107196" @default.
- W3014623217 abstract "Eighteen samples for 36Cl Cosmic-Ray Exposure (CRE) dating were taken from glacially polished bedrocks, moraine boulders, fossil/active rock glaciers and debris-covered glaciers in Fremri-Grjótárdalur and Hóladalur cirques in the Víðinesdalur, Hofsdalur and Héðinsdalur valleys, close to Hólar village, in the Tröllaskagi peninsula, northern Iceland. Boulder sampling was preceded by a study of the boulder stability with the twofold aim of: ensuring that the surfaces to be sampled were stable enough for the reliable application of CRE dating, and to better understand the relation between the glacier dynamics and exposition history. The results show that the glaciers which occupy the valleys in Tröllaskagi began their retreat around 16 ka. Later, the glaciers advanced again around 11 ka within the cirques, and small moraines were formed. Thereafter, these small glaciers retreated and evolved into rock glaciers as debris from paraglacial processes accumulated on the glacier surface. The fronts of these rock glaciers stabilized definitively shortly after their formation and became eventually fossil after the melting of their internal ice. New rock glaciers and debris-covered glaciers formed afterwards, which still have internal ice at present, although their current dynamics are mostly related to subsidence. The stabilization of these rock glaciers and debris-covered glaciers is dated to the period between 7 and 3 ka, although they may have been reactivated during cold neoglacial periods. This research demonstrates the potential interest in applying CRE dating methods to debris-covered glaciers and rock glaciers to determine their origin, evolution and phase of cessation of internal movement until they finally lost their internal ice and became fossil." @default.
- W3014623217 created "2020-04-10" @default.
- W3014623217 creator A5013792700 @default.
- W3014623217 creator A5018862525 @default.
- W3014623217 creator A5029761357 @default.
- W3014623217 creator A5032186482 @default.
- W3014623217 creator A5036456968 @default.
- W3014623217 creator A5042779755 @default.
- W3014623217 creator A5055741964 @default.
- W3014623217 creator A5057717282 @default.
- W3014623217 creator A5081720149 @default.
- W3014623217 date "2020-07-01" @default.
- W3014623217 modified "2023-10-01" @default.
- W3014623217 title "Constraints on the timing of debris-covered and rock glaciers: An exploratory case study in the Hólar area, northern Iceland" @default.
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