(Article of periodic en Anglais - 2010)

Document title

Nature and genesis of till silt pellets from the Shuanghu area, Central Tibetan Plateau, China

Authors(s) and Affiliation(s)

LI D. (1) ; LI Y. (2) ; DONG G. (3) ; WANG L. (3) ;
(1) China Earthquake Disaster Prevention Center, Beijing, CHINE
(2) Dep. of Geography, Univ. of Tennessee, Knoxville, ETATS-UNIS
(3) Inst. of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, CHINE


Distinctive silt pellets were identified in a diamicton profile, 1 km north of the town of Shuanghu on the central Tibetan Plateau. The characteristics (mineral composition, texture, structure, fabric, and striations) of the diamicton indicate that it was formed under ice as subglacial melt-out or lodgment till. Comparing the shape, size, grain composition, and preservation of the pellets in this area with published pellet studies, the AA. conclude that silt pellets from the Shuanghu area are formed by in situ melting out of dead ice (containing pellets) within subglacial till. They estimate that the till was deposited no later than Marine Isotope Stage (MIS) 8, based on nearby numerical ages for post-glacial fluvial terraces and the overall Quaternary glaciation history of the Tibetan Plateau


Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2010, vol. 31, no6 [pp. 493-507]

Bibliographic references : 2,5 p.

Collation : 4 fig., 3 tabl.



INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.2747/0272-3646.31.6.493

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