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Geochemistry of Neoproterozoic mixosedimentite in northern Anhui and its geological significance

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Global Geology 2010年第Z1期 128-134页

作者： sun linhua,gui herong and chen song School of Earth Sciences and Engineering,Suzhou University,Suzhou 234000,Anhui,China

关键词： provenance tectonic setting mixosedimentites Neoproterozoic northern Anhui

Geochemical characteristics of REE in the Late Neo-proterozoic limestone from northern Anhui Province, China

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Chinese Journal Of Geochemistry 2014年第2期33卷 187-193页

作者： chen song gui herong sun linhua School of Earth Sciences and Engineering Suzhou University School of Resource and Earth Science CUMT

Ten representative limestone samples [six from Wangshan Formation(WL) and the other four from Gouhou Formation(GL)] were collected from outcrops of the northern Anhui Province, and REE concentrations in limestone were measured by ICP-MS. The depositional environment and source of the REE were analyzed, and the results implys that the total REE of samples are low compared with the recent marine sediments, which range from 9.61 to 54.18 mg/kg and an average of 22.93 mg/kg. The PAAS-normalized REE+Y patterns of limestone are characterized by(1) light REE depletion in WL and enrichment in GL with the values of(Nd/Yb)SN ranging form 0.65 to 0.91 and 1.12 to 1.46, respectively;(2) light negative Ce anomaly(0.85–1.02) and positive La anomaly(0.92–1.27); and(3) both Eu(0.91–1.23) and Y(1.42–2.38) expressing light positive anomaly. The character indicated that the depositional environment was oxygenated, with infection by the hydrothermal activity and contamination of detritus.

关键词：稀土元素灰岩样品地球化学特征安徽省晚新元古代中国 ICP-MS Ce异常

Geochemistry of sandstones from the Neoproterozoic Jinshanzhai Formation in northern Anhui Province, China: Provenance, weathering and tectonic setting

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Chinese Journal Of Geochemistry 2013年第1期32卷 95-103页

作者： sun linhua gui herong chen song School of Earth Science and Engineering Suzhou University

Sandstones from the Neoproterozoic Jinshanzhai Formation in northern Anhui Province, China, were analyzed for major oxides and trace elements to infer their provenance, the intensity of paleo-weathering of their source rocks and the depositional tectonic setting. Diagrams of (SiO2/20)-(Na2O+K2O)-(MgO+TiO2+FeO*), TiO2-Ni, Th-Hf-Co, Hf-La/Th and some ratios of elements indicate that felsic rocks constitute the source rocks in the provenance. The values of Chemical Index of Alteration (CIA) are low, which are considered to be affected by K-metasomatism. Whereas the high CIW (Chemical Index of Weathering) values indicate intensive weathering of the source material. Plots of sandstones on bivariate and triangle discriminant diagrams, as well as ICV (Index of Compositional Variation) values revealed that they were deposited on a passive continental margin or in an intra-plate basin. Our recent study, in combination with previous studies and the research progress of the Rodinia super continent, demonstrated that the convergence and extension of the Rodinia super continent were preserved by twice extension as expressed by petrological variation of the southeastern margin of the North China Craton (NCC) during the Neoproterozoic.

关键词：沉积构造背景中国北方新元古代地球化学特征安徽省 Rodinia超大陆砂岩耐候性

Rare earth element geochemistry of groundwater from a deep seated sandstone aquifer,northern Anhui province,China

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Mining Science and Technology 2011年第4期21卷 477-482页

作者： gui herong sun linhua chen Luwang chen song School of Earth Sciences and Engineering Suzhou Universing Suzhou 234000 China School of Resources and Environmental Engineering Hefei University of Technology Hefei 230009 China

Deep coal mines in northern Anhui province, China, provide opportunities for tracing the distribution and fractionation of rare earth elements CREEs） in deep seated environments. Major ions, as well as REE concentrations were measured in groundwater from a sandstone aquifer located between -400 and -280 m. Our results indicate that this groundwater consists of ***-Na or ***3-Na water types with warm temperature （30.1-31.4~C）, circumneutral pH （7.27-8.61） and high levels of total dissolved solids （TDS ~ 1306--2165 mg/L）. Concentrations of REEs in groundwater are high as expressed by their Nd con- centrations （0.0086-0.018μg/L）. Except for weak heavy REEs （HREE） enrichment relative to light REEs （LREE）, the similarity of REE distribution patterns between groundwater and aquifer rock indicate that enrichment of REEs is considered to be controlled by aquifer rock, as well as by their minerals, whereas the fractionation of REEs is controlled by HREE enriched minerals and, to a lesser extent, by inorganic REE complexes. Ce anomalies normalized to Post Archean Average Shale （PAAS） and aquifer rock are weak, which probably reflect the contribution of reduced conditions in combination with pH, rather than a sig- nature of aouifer rock.

关键词： Rare earth elements Water-rock interaction Sandstone aquifer Groundwater

Geochemical characteristics and geological significance of the Neoproterozoic carbonates from northern Anhui Province, China

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Chinese Journal Of Geochemistry 2011年第1期30卷 40-50页

作者： sun linhua gui herong chen song MA Yanping HE Zhenyu Department of Geographical and Environmental Sciences Suzhou University Suzhou 234000 China State Key Laboratory of Mineral Deposit Research Department of Earth Sciences Nanjing University Nanjing 210093 China

Petrographical and geochemical studies were carried out of the Neoproterozoic carbonates from northern Anhui Province, China. These carbonates can be subdivided into two types, including purified limestone (PL) and mixed limestone and siliclastic rocks (MLS). PLs are low in Si, Al, Zr and total REE but high in CaO compared with MLSs. Correlations between Zr, Fe2O3, P2O5 and total REE are also less remarkable, indicating that they were not obviously contaminated by continental materials but directly precipitated from seawater. So they can be used for the inversion of paleo-seawater REE patterns. The inversed results indicated that the REE pattern of Neoproterozoic seawater was similar to that of the modern seawater except for the lack of Ce depletion, which was probably affected by the reduced hydrothermal solution. In combination with previous studies, the geochemical trending of these carbonatic samples towards the continental arc in the La- Th-Sc and Th-Sc-Zr/10 diagrams is interpreted as the contamination of arc volcanism. The tectonic background of the southern margin of the North China Craton in the Neoproterozoic was probably related to the Grenville orogeny during the convergence of the Rodinia supercontinent, rather than an intra-plate environment.

关键词：中新元古代碳酸盐岩地球化学安徽省地质意义中国 Rodinia超大陆特征和

安徽宿州地区石灰岩-土壤元素迁移及质量评价

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环境化学 2013年第6期32卷 987-992页

作者：陈松桂和荣孙林华宿州学院地球科学与工程学院宿州234000 安徽省煤矿勘探工程技术研究中心宿州234000

通过野外采样及室内分析测试,对宿州石灰岩土壤质量状况、成土作用过程中元素迁移规律及影响因素进行研究.结果表明,宿州地区石灰岩土壤P、Sr较缺乏,K、Ca、Fe、Mn和Cu含量丰富,S、Zn含量适中;在岩石-土壤作用过程中,Ca、Cu和Sr元素亏损... 详细信息

通过野外采样及室内分析测试,对宿州石灰岩土壤质量状况、成土作用过程中元素迁移规律及影响因素进行研究.结果表明,宿州地区石灰岩土壤P、Sr较缺乏,K、Ca、Fe、Mn和Cu含量丰富,S、Zn含量适中;在岩石-土壤作用过程中,Ca、Cu和Sr元素亏损,其他元素全部富集;主成分分析提取4个主成分,解释累计总方差77.03%,其中元素Si、Zr、Ca、Ti、Al、K、Mn主要受控于自身化学行为(PC1);Rb、Fe、V、Th、Cr主要受区域环境影响(PC2);PC3和PC4分别对元素Pb、Sr、As和Cu、Zn有较高的贡献,暗示此两种因素为后期人类活动.

关键词：元素迁移土壤评价宿州主成分分析

深层地下水稀土元素无机形态及其对稀土特征的影响——以皖北任楼矿煤系含水层为例

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煤田地质与勘探 2011年第3期39卷 38-43页

作者：孙林华桂和荣陈松宿州学院地球科学与工程学院安徽宿州234000

在对皖北任楼矿煤系含水层地下水常规离子和稀土元素组成分析的基础上,运用Visual Minteq软件对溶解态稀土的无机形态进行了模拟。结果表明:煤系含水层地下水分为富SO24-和富HCO-3(或富CO32-)两类,二者pH值大致以8.20/8.36为界。富SO24... 详细信息

在对皖北任楼矿煤系含水层地下水常规离子和稀土元素组成分析的基础上,运用Visual Minteq软件对溶解态稀土的无机形态进行了模拟。结果表明:煤系含水层地下水分为富SO24-和富HCO-3(或富CO32-)两类,二者pH值大致以8.20/8.36为界。富SO24-水具有相对富HCO-3水偏低的稀土总量,但二者在PAAS(后太古代平均页岩)标准化图解上均表现为轻稀土亏损的型式。富SO24-水中稀土无机形态包括Ln3+、LnCO3+、LnSO4+、Ln(CO3)2-和Ln(SO4)2-(Ln代表稀土元素),但富HCO-3水中以Ln(CO3)2-和LnCO3+为主,且各形态的相对含量与pH值和元素类型(如轻、重稀土)关系密切。HCO3-含量与地下水∑REE和NdSN/YbSN存在明显的相关性,表明不同含量的稀土元素无机形态(尤其是Ln(CO3)2-)对地下水中稀土元素总量和轻重稀土分异程度存在影响。

关键词：稀土元素无机形态富集与分异深层地下水

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皖北矿区深层地下水径流规律的地球化学反演

中国煤炭地质 2009年第1期21卷 35-38,51页

作者：孙林华桂和荣陈松宿州学院地理与环境科学系安徽宿州234000

利用NetpathXL2.14对皖北矿区典型煤矿(朔里矿、张庄矿、杨庄矿和刘二矿)太灰水的地球化学特征进行了模拟,并结合与区域构造有关的地貌特征和水文地质条件对该区深层地下水径流规律、控制因素、地下水子系统划分及煤矿开采过程对深层地... 详细信息

利用NetpathXL2.14对皖北矿区典型煤矿(朔里矿、张庄矿、杨庄矿和刘二矿)太灰水的地球化学特征进行了模拟,并结合与区域构造有关的地貌特征和水文地质条件对该区深层地下水径流规律、控制因素、地下水子系统划分及煤矿开采过程对深层地下水的影响进行了讨论。模拟结果表明:皖北矿区太灰水径流受不同的地下水子系统控制,其中朔里矿—张庄矿—杨庄矿与刘二矿处于不同的水文地质单元,朔里矿—张庄矿—杨庄矿太灰水径流主要与区内北高南低的地形有关自北东向南西流动的;朔里矿—张庄矿段太灰水的补给和排泄可能受到了矿井人工排泄的影响,但太灰水主体径流方向并未明显改变;对张庄矿—杨庄矿段而言,需要着重考虑区内太灰水的补给和排泄情况,以防止相关突水事故的发生。

关键词：深层地下水径流规律地球化学反演皖北矿区

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皖北矿区环境地质问题及防治

中国煤炭地质 2009年第7期21卷 41-44页

作者：陈松桂和荣孙林华马艳平宿州学院地理与环境科学系安徽宿州234000

在分析研究区自然地理环境和地质构造的基础上,采用大量调查数据对皖北矿区环境地质问题进行了系统的分析,分析结果表明:区内主要有地面塌陷、水资源破坏、土地资源破坏、瓦斯突出、水土流失等环境地质问题。通过对各类环境地质问题的... 详细信息

在分析研究区自然地理环境和地质构造的基础上,采用大量调查数据对皖北矿区环境地质问题进行了系统的分析,分析结果表明:区内主要有地面塌陷、水资源破坏、土地资源破坏、瓦斯突出、水土流失等环境地质问题。通过对各类环境地质问题的现状、形成原因和危害的进一步研究,提出了采取"一疏二平三改造"的方法对塌陷进行治理,煤矸石的综合利用,瓦斯、水的防治与利用等防治措施,并对矿区环境防治的投资、管理提出建议。

关键词：地面塌陷水资源破坏煤矸石防治措施皖北矿区