Mineral matter in the Philippi peat in relation to peat/lignite-forming conditions in Greece
Mineral matter in the Philippi peat in relation to peat/lignite-forming conditions in Greece
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DOI：
10.1080/00908310252712316
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发表时间：
2002-01-01
期刊：
影响因子：
--
通讯作者：
Christanis, K
中科院分区：
文献类型：
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作者：
Kalaitzidis, S;Christanis, K
对希腊东北部菲利皮盆地190m厚的泥炭层序的上魏氏和全新世地层的矿物学和地球化学特征进行了研究。灰分含量为11.4~53.4%，无机碳含量为0.5~5.7%。X-射线衍射分析表明，泥炭中的主要矿物为镁方解石、石英、粘土矿物、钾长石、斜长石和绿泥石。次生有石灰、黄铁矿、菱铁矿、磷灰石、铁氧化物、钙钛矿和玄武岩。在上冰期和晚冰期，碎屑沉积在古帝国中占主导地位。泥炭富含Fe、K、Ti、As、Cr、Cu、Ni、Rb、Th、Y、Zn、Zr等元素。全新世早期，以富钙物质的自生沉积为主。泥炭富含As、Br、Se、Sr和U。在中全新世，泥炭中地下水位的波动导致自生矿物和碎屑矿物的沉积。由于排水和耕作，晚全新世泥炭遭到严重破坏。上魏氏泥炭的矿物质特征与许多希腊褐煤的特征相同。
The Upper Weichselian and Holocene layers of the 190 m thick peat sequence in the Philippi basin (NE Greece) are studied by means of their mineralogical and geochemical features. The ash contents range between 11.4 and 53.4% and inorganic carbon contents range between 0.5 and 5.7%. X-ray diffraction (XRD) analysis revealed that Mg-calcite, quartz, clay minerals, K-feldspars, plagioclases, and chlorites are the dominant minerals in the peat. Lime, pyrite, siderite, apatite, iron-oxides, weddellite, and basaluminite occur subordinately. During Upper Pleniglacial and Late Glacial times, clastic sedimentation prevailed in the palaeomire. Peat was enriched in Fe, K, Ti, As, Cr, Cu, Ni, Rb, Th, Y, Zn, and Zr. In Early Holocene, authigenic sedimentation of Ca-rich material dominated. Peat became enriched in As, Br, Se, Sr, and U. In Middle Holocene, fluctuations of the water table in the mire resulted in the deposition of both authigenic and clastic minerals. The Late Holocene peat is intensely damaged due to drainage and cultivation. The mineral matter features of the Upper Weichselian peat are identical to the features of many Greek lignites.