Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/44670
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dc.contributor.authorWang, M.K.en_US
dc.contributor.author張家銘zh_TW
dc.contributor.authorWang, W.M.en_US
dc.contributor.authorChiang, P.N.en_US
dc.contributor.authorChen, Y.M.en_US
dc.contributor.authorChang, C.M.en_US
dc.date2007zh_TW
dc.date.accessioned2014-06-06T08:13:01Z-
dc.date.available2014-06-06T08:13:01Z-
dc.identifier.issn0038-075Xzh_TW
dc.identifier.urihttp://hdl.handle.net/11455/44670-
dc.description.abstractClay mineralogy and whole-soil major element chemistry of an early Quaternary red soil and two late Miocene paleosols between basalt lavas on Penghu Islands (Pescadores), Taiwan, were studied to compare properties of soils from the different periods. The early Quaternary red soil consists of a kaolinite and smectite clay assemblage. The late Miocene paleosols are rich in kaolin minerals. The amounts of Si, Fe, and Al in the three profiles are the mineralogical differences. The depth distributions for clay and free Fe oxide contents suggest that the early Quaternary red soil formed in at least two stages. The early Quaternary red soil was classified as fine, mixed, hyperthermic, Typic Rodustalf. The late Miocene paleosols were classified as fine, kaolinite, hyperthermic, Typic Rhodic Paleustalf, The late Miocene paleosols contain more clay, lower SiO2/Al2O3 and SiO2/(Al2O3 + Fe2O3) molar ratios, averages of 2.5 and 1.7, respectively, and higher chemical indexes of weathering than the early Quaternary paleosol. The SiO2/Al2O3 and SiO2/(Al2O3 + Fe2O3) molar ratios and Mn2+ and Mg2+ distributions showed zigzag patterns, suggesting that changes in sea level influenced the early Quaternary profile during the soil formation.en_US
dc.language.isoen_USzh_TW
dc.relationSoil Scienceen_US
dc.relation.ispartofseriesSoil Science, Volume 172, Issue 6, Page(s) 486-498.en_US
dc.relation.urihttp://dx.doi.org/10.1097/ss.0b013e3180471531en_US
dc.subjectclay mineralsen_US
dc.subjectchemical index of weatheringen_US
dc.subjectkaoliniteen_US
dc.subjectmajor elementen_US
dc.subjectchemistryen_US
dc.subjectpaleosolsen_US
dc.subjectsmectiteen_US
dc.subjectisotope chemistryen_US
dc.subjectkaolin depositsen_US
dc.subjectsoilsen_US
dc.titleClay mineralogy and major element chemistry of the early Quaternary and late Miocene paleosols on Penghu Islands (Pescadores), Taiwanen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1097/ss.0b013e3180471531zh_TW
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