宾夕法尼亚州切斯特县和兰开斯特县蛇纹石荒地土壤的有机岩石学、古植物学和地球化学:关于大面积发展的说明

IF 5.6 2区 工程技术 Q2 ENERGY & FUELS
James C. Hower , Jennifer M.K. O'Keefe , Roger Earl Latham , Shifeng Dai , Luis F.O. Silva , Kevin R. Henke , Jon S. Thorson
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引用次数: 0

摘要

对宾夕法尼亚州东南部州线蛇绿岩带超基性岩上形成的土壤进行的调查表明,其矿物组合以石英为主,少量蛇绿岩族矿物蜥蜴石、锑榴石和clinochlore,以及其他矿物。样本中的氧化镁含量高达 39.91%,铬含量为 22500 微克/克,镍含量为 3300 微克/克(灰分基)。轻稀土元素与氧化镁/(氧化镁 + 氧化硅)有明显的相关性,而铬的分布则是随机的。土壤中的有机物与褐煤和亚铝质矿物质非常相似。从木材衍生的宏量物质显示出从相对原始的木材到降解和有真菌和动物活动迹象的侵蚀形式的变化。麦饭石的形态从桡纹状到无定形块状不等,几乎没有可辨认的结构。花粉组合主要由 sp.、sp.和 sp.对真菌群落和行业结构的分析表明,山羊丘陵荒地的真菌群落与新德克萨斯荒地和诺丁汉荒地的真菌群落不同,遇到的行业结构既与泥炭地相似,又有很大不同,特别是在丛枝菌根真菌遗存的比例方面。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Organic petrology, palynology, and geochemistry of soils from serpentine barrens, Chester and Lancaster counties, Pennsylvania: Notes on maceral development

An investigation of the soils developed on ultramafic rocks in the State Line Serpentinite Belt in southeastern Pennsylvania demonstrated that the mineral assemblages are dominated by quartz, with lesser amounts of the serpentine group minerals lizardite and antigorite, and clinochlore, among other minerals. The samples have up to 39.91% MgO, 22,500 μg/g Cr, and 3300 μg/g Ni (ash basis). The light rare earth elements have a significant correlation to MgO/(MgO + SiO2) while the distribution of Cr is random. The organic matter in the soil bears a strong similarity to lignite and subbituminous macerals. Wood-derived macerals showed variations from relatively pristine wood to degraded and attrital forms with evidence of fungal and faunal activity. Macrinite ranged from coprolitic forms to amorphous masses with little or no recognizable structure. The pollen assemblages were dominated by Pinus sp., Quercus sp., and Ribes sp. Analysis of the fungal assemblages and guild structures suggests that the Goat Hill Barrens assemblage differed from the New Texas Barrens and Nottingham Barrens assemblages and that the guild structures encountered are both similar to those encountered in peatlands while also very different, especially in the proportion of arbuscular mycorrhizal fungal remains.

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来源期刊
International Journal of Coal Geology
International Journal of Coal Geology 工程技术-地球科学综合
CiteScore
11.00
自引率
14.30%
发文量
145
审稿时长
38 days
期刊介绍: The International Journal of Coal Geology deals with fundamental and applied aspects of the geology and petrology of coal, oil/gas source rocks and shale gas resources. The journal aims to advance the exploration, exploitation and utilization of these resources, and to stimulate environmental awareness as well as advancement of engineering for effective resource management.
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