Granulometry, calcium carbonate content and radiocarbon ages of soil profiles obtained in Quinghai Province, northeast Tibet

Colluvial deposits consisting of silts and loams were detected in several climatologically different areas of NE Tibet (3200-3700 m a.s.l.). Layering, distinct organic content and low content of coarse matter as well as location in the relief revealed an origin from low-energy slope erosion (hillwash). Underlying and intercalated paleosols were classified as Chernozems, Phaeozems, Regosols and Fluvisols. Fifteen radiocarbon datings predominant on charcoal from both colluvial layers and paleosols yielded ages between 8988 ± 66 and 3512 ± 56 uncal BP. Natural or anthropogenic factors could have been the triggers of the erosional processes derived. It remains unclear which reason was mainly responsible, due to controversial paleoclimatic and geomorphic records as well as insufficient archaeological knowledge from this region. Determinations of charcoal and fossil wood revealed the Holocene occurrence of tree species (spruce, juniper) for areas which nowadays have no trees or only few forest islands. Thus large areas of NE Tibet which are at present steppes and alpine pastures were forested in the past.

Annuaire statistique de la province de Buenos-Ayres.

1.-5. année, 1881-1885 publié sous la direction du docteur Émile R. Coni.--6.-7. année, 1886-1887 publié sous la direction d'Albert C. Dessein.--8. année, 1888 publié par M. Adolphe Moutier.

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The history of the province of Moray. Comprising the counties of Elgin and Nairn, the greater part of the county of Inverness and a portion of the county of Banff,--all called the province of Moray before there was a division into counties.

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From the Black Mountain to Waziristan, being an account of the border countries and the more turbulent of the tribes controlled by the North-west frontier province, and of our military relations with them in the past.

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The Yangtze Valley and beyond; an account of journeys in China, chiefly in the province of Sze Chuan and among the Man tze of the Somo territory,

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Annotated list of publications of the Department of mines of the province of Quebec, 1883-1944.

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