| Chemical Weathering of New Pyroclastic Deposits from Mt. Merapi （Java）, Indonesia |
| |
| 作者姓名： | Dian Fiantis Malik Nelson Eric Van Ranst Jusop Shamshuddin Nikolla P. Qafoku |
| |
| 作者单位： | Department;Soil;Science;Faculty;Agriculture;University;Andalas;Kampus;Unand;Limau;Manis;Crop;Estate;Polytechnic;Politani;Tanjung;Pati;Geology;（WE13）;Laboratory;Ghent;Land;Management;Universiti;Putra;Malaysia;Pacific;Northwest;National; |
| |
| 基金项目： | supported by the Directorate of Higher Education Department of National Education of Republic of Indonesia under Fundamental Research Grant no: 005/SP3/PP/ DP2M/II/2006-2007, granted to the first author;;the Ministry of Research and Technology of the Republic Indonesia (Fundamental Research Intensive Program with grant no. 97/M/Kp/XI/ 2007) granted to first and second authors |
| |
| 摘 要： | The Java Island, Indonesia with abundant amount of pyroclastic deposits is located in the very active and dynamic Pacific Ring of Fires. Studying the geochemical weathering indices of these pyroclastic deposits is important to get a clear picture about weathering profiles on deposits resulting from the eruption of Mt. Merapi. Immediately after the first phase of the eruption （March to June 2006）, moist and leached pyroclastic deposits were collected. These pyroclastic deposits were found to be composed of volcanic glass, plagioclase feldspar in various propoitions, orthopyroxene, clinopyroxene, olivine, amphibole and titanomagnetite. The total elemental composition of the bulk samples （including trace elements and heavy metals） was determined by wet chemical methods and X-ray fluorescence （XRF） analyses. Weathering of the pyroelastic deposits was studied using various weathering indices. The Ruxton ratio, weathering index of Parker, Vought resudual index and chemical index of weathering of moist pyroclastic deposits were lower than those of the leached samples, but the alteration indices （chemical and plagioclase） were slightly higher in the moist compared to the leached pyroelastic deposits.
|
| 关 键 词： | 火山碎屑 化学风化 碎屑沉积 印度尼西亚 火山爆发 单斜辉石 指数和 X射线荧光 |
| 收稿时间： | 4 June 2009 |
Chemical weathering of new pyroclastic deposits from Mt. Merapi (Java), Indonesia |
| |
| Dian Fiantis,Malik Nelson,Eric Van Ranst,Jusop Shamshuddin,Nikolla P. Qafoku.Chemical weathering of new pyroclastic deposits from Mt. Merapi (Java), Indonesia[J].Journal of Mountain Science,2009,6(3):240-254. |
| |
| Authors: | Dian Fiantis Malik Nelson Eric Van Ranst Jusop Shamshuddin Nikolla P Qafoku |
| |
| Abstract: | The Java Island, Indonesia with abundant amount of pyroclastic deposits is located in the very active and dynamic Pacific
Ring of Fires. Studying the geochemical weathering indices of these pyroclastic deposits is important to get a clear picture
about weathering profiles on deposits resulting from the eruption of Mt. Merapi. Immediately after the first phase of the
eruption (March to June 2006), moist and leached pyroclastic deposits were collected. These pyroclastic deposits were found
to be composed of volcanic glass, plagioclase feldspar in various proportions, orthopyroxene, clinopyroxene, olivine, amphibole
and titanomagnetite. The total elemental composition of the bulk samples (including trace elements and heavy metals) was determined
by wet chemical methods and X-ray fluorescence (XRF) analyses. Weathering of the pyroclastic deposits was studied using various
weathering indices. The Ruxton ratio, weathering index of Parker, Vought resudual index and chemical index of weathering of
moist pyroclastic deposits were lower than those of the leached samples, but the alteration indices (chemical and plagioclase)
were slightly higher in the moist compared to the leached pyroclastic deposits. |
| |
| Keywords: | Weathering index Pyroclastic deposit Andesite Merapi Indonesia |
| 本文献已被 CNKI 维普 SpringerLink 等数据库收录！ |
