Soil development on Late Quaternary river terraces in a high montane valley in Bhutan, Eastern Himalayas

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Bäumler R, Dorji T, Caspari T, Veldkamp A, Jongmans A, Tshering K, Dorji T, Baillie I
Zeitschrift: Catena
Verlag: Elsevier
Jahr der Veröffentlichung: 2009
Band: 78
Heftnummer: 1
Seitenbereich: 48-59
ISSN: 0341-8162
Sprache: Englisch


Abstract


We examined the geochemistry and micromorphology of the soils on a suite of morphologically well-defined and visually distinct fluvial terraces, up to 40 m elevation above the current riverbed, at Thangbi in the upper Bumthang Valley, Bhutan. The alluvia forming each of the terraces are lithologically and structurally similar, with shallow or moderately deep, clast-free sandy loam overbank deposits capping deep clast-supported beds of rounded boulders and interstitial sand. The topsoils on the 40 m terrace have more silt than those on the lower terraces. The soils are interpreted mainly as a monoclinal post-incisive chronosequence. Features that indicate progressive pedogenesis with increasing elevation include subsoil rubefaction, crystallinity of free Fe sesquioxides, and weathering of susceptible primary minerals, such as biotite and hornblende. However other soil attributes show no systematic trends and the overall impression is of limited pedogenesis, even in the soils on the higher terraces. We examine possibilities that the immaturity of the soils is due to pedogenic rejuvenation by post-incision additions to the soil parent materials. © 2009 Elsevier B.V. All rights reserved.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Bäumler, Rupert Prof. Dr.
Professur für Geographie


Zitierweisen

APA:
Bäumler, R., Dorji, T., Caspari, T., Veldkamp, A., Jongmans, A., Tshering, K.,... Baillie, I. (2009). Soil development on Late Quaternary river terraces in a high montane valley in Bhutan, Eastern Himalayas. Catena, 78(1), 48-59. https://dx.doi.org/10.1016/j.catena.2009.02.018

MLA:
Bäumler, Rupert, et al. "Soil development on Late Quaternary river terraces in a high montane valley in Bhutan, Eastern Himalayas." Catena 78.1 (2009): 48-59.

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