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Volume 32 Issue 1
Mar.  2013
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Article Navigation >  CARSOLOGICA SINICA  > 2013  >  32(1): 23-28
NONG Ri zheng, LI Ren cheng, DONG Song sheng, HE Wei song, HUANG Chun ling, ZHAO Sheng li, HE Ling yu. Indicative significance of phytolith records in laterite developed on carbonate rocks[J]. CARSOLOGICA SINICA, 2013, 32(1): 23-28. doi: 10.3969/j.issn.1001-4810.2013.01.004
Citation: NONG Ri zheng, LI Ren cheng, DONG Song sheng, HE Wei song, HUANG Chun ling, ZHAO Sheng li, HE Ling yu. Indicative significance of phytolith records in laterite developed on carbonate rocks[J]. CARSOLOGICA SINICA, 2013, 32(1): 23-28. doi: 10.3969/j.issn.1001-4810.2013.01.004
shu

Indicative significance of phytolith records in laterite developed on carbonate rocks

doi: 10.3969/j.issn.1001-4810.2013.01.004

  • College of Earth Sciences/Guangxi Key Laboratory of Hidden Metallic Ore Deposits Exploration， Guilin University of Technology

  • Received Date: 2012-09-17
  • Publish Date: 2013-03-25
    Abstract
  • Types, distribution and content of phytolith extracted from laterite developed on carbonate rock are analyzed quantitatively in Yanshan district, Guilin city, Guangxi. Some findings are shown as below，（1）Phytolith types are various in surface soil. The content of phytolith presents high values in modern soil, decreases quickly from surface laterite down to bottom and becomes very little or absent at 20 cm deep. （2）No phytolith rich layers are found except in the surface soil (0～0.1 m) on the profile. （3）Influenced by leaching and bioturbation, phytolith in laterite developed on carbonate rocks can be transported downward with approximate 10～20 cm. However, phytolith translocation has no pronounced selectivity to their types and sizes and only has little effect on its assemblage in soil. The vegetation and climate recorded in phytolith assemblages in laterite soils are well accorded with natural conditions in this area. （4）Surface laterite is the only phytolith enriched layer on the profile. This distribution character suggests phytolith transport from surface soil to bottom during the formation of laterite, which supports the view that the laterite originated by carbonate rock weathering. （5）The characteristics that transportation of phytolith having no pronounced selectivity to phytolith assemblage makes it possible to reconstruct paleoenvironments by analyzing phytolith data objectively.

     

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