福建上杭盆地中生代火山岩首次发现开来石

在１：５万上杭幅重砂野外调查中，在上杭盆地中生代火山岩河系中首次发现开来石。经中国地质大学Ｘ光单晶粉晶分析、桂林有色金属地质研究所电子探针成分分析结果，均与国外有关文献中的开来石相一致。是我省首次发现的含砷稀土矿物。它为在该区中生代火山岩中寻找稀土资源提供新的线索。此外该矿物常与黄金、辰砂等相伴生，笔者初步认为可以根据伴生金的相关元素Ａｓ开来石组合寻找金，是本区很值得注意的一种寻找金的方法。     

福建浦城丘源地区晚太古代变质岩地质特征

浦城丘源地区出露太古代变质岩，其地质特征类似于建宁西部上太古界天井坪组，并取得了２６７８±４１Ｍａ同位素年龄资料。本文系统论述其岩石组合、原岩建造、大地构造环境及同位素地质年龄等特征。     

福建省霞浦县农业地球化学初步研究

在利用全省１：２０万区域化探水系沉积物测量成果基础上，结合重点地区的土壤调查，对霞浦县的农业地球化学环境进行了分区。并开展了荔枝、茶叶、油奈、剑蛏的地球化学研究，为扩种、移殖这些名、特、优品种及合理施肥提供科学依据，揭示了地球化学解决农业问题的特殊作用。     

平江万古金矿床地球化学研究

平江万古金矿床，成矿物质来源于容矿地层中元古界冷家溪群坪原组，矿床继承了容矿地层富Ａｓ、Ｓｂ、Ｗ等微量元素的特点，成矿流体为与区域浅变质作用有关的ＨＣＯ＿３－－Ｃｌ－－Ｎａ￣＋－Ｃａ￣（２＋）型建造水热液，成矿过程中Ａｕ主要以ＡｕＡｓＳ＿２、ＡｕＡｓＳ＿３￣（２－）络合物形式迁移，矿床形成于中一低温，弱碱性、还原环境。     

北京密怀平山区金矿成矿地质条件及成矿期的探讨

本文通过对密怀平山区金矿成矿地质条件的分析，将密怀平山区金矿的成矿期划分为早元古代吕梁成矿期、中生界印支成矿期及燕山成矿期三个成矿期。     

江淮地区北部晚太古宙TTG质片麻岩

江淮地区北部的灰色片麻岩是深成侵入的英云闪长岩－奥长花岗岩－花岗闪长岩，以高铝型为主，具弱的负Ｅｕ异常或不明显。从英云闪长岩到奥长花岗岩，ＴｉＯ＿２、ＦｅＯ、Ｃａ０、ＭｇＯ减少，而稀土元素分馏程度增加。形成于晚太古宙华北陆台南东大陆边缘挤压的构造环境下，由斜长角闪岩部分熔融而成。     

Early-Holocene geochemical evolution of saline Medicine Lake,South Dakota

Medicine Lake is a highly saline, meromictic, magnesium sulfate, closed-basin lake in northeastern South Dakota. The geochemical, mineralogical, and magnetic stratigraphies of sediments deposited from about 10.8 to 4.5 ka B.P. document the evolution of the saline brine in response to climatic change in the early to mid-Holocene. During the spruce occupation of the Medicine Lake catchment (10.8–10.0 ka B.P.), dark-grey massive basal sediments with low total-sulfur and carbonate content, upwardly increasing organic-carbon content, and high magnetic susceptibility were deposited in a deep freshwater lake. As the vegetation in the area changed from spruce to birch to oak and elm and finally to prairie between 10.0 and 9.2 ka B.P., and as the lake became shallow and salinity increased from <2 to >10%, light-and dark-grey calcareous and organic-carbon-rich banded sediments with low total-sulfur content and low magnetic susceptibility were deposited. Previous studies have shown that during the forest/prairie transition the lake then changed abruptly from fresh to saline as it lost a substantial portion of its volume. During the early prairie period (9.2–5.5 ka B.P.), alternating sections of aragonite-rich laminae and grey massive sediments with high total-sulfur content and multiple gypsum layers were deposited in a meromictic environment under conditions of fluctuating lake levels and salinity. Continued aridity during the mid-Holocene (5.5–4.5 ka B.P.) probably maintained the lake at relatively low levels and high salinity as dark-grey generally massive sediments with moderate total-sulfur, carbonate, and organic-carbon content and no measurable magnetic susceptibility were deposited.     

闽北早古生代岛弧火山岩的岩石地球化学特征

作者系统地研究了福建政和早古生代岛弧火山岩的岩石地球化学特征。研究表明该火山岩是以岛弧拉斑玄武岩-钙碱性火山岩组合为特征的岛弧火山岩系列，并具有从拉斑系列向钙碱性系列演化的特征；该火山岩源于亏损地幔，并且受到一定的陆壳物质混染，基性的拉斑玄武质系列受到陆壳物质混染较少，而中性钙碱性系列则受到较大程度混染。     

广西灌阳地区碳酸盐岩层滑断裂构造地球化学系统

灌阳地区碳酸盐岩中的层滑断裂构造地球化学系统具有典型的结构分带性、变形二重性和成分互补性。在这个系统中存在着Cu→Fe3 →V→Si→Al→Mn→Ba→Ni→Sr→Ag→Bi→Ga→In→Pb→Fe2 →Cr→Co→Zn→Mg→Ca→CO2的稳定性递减序列。影响构造地球化学分异的因素是原岩的性质、应力、温度和流体。构造地球化学作用的基本类型有：动力分异作用、压溶作用和氧化还原作用。层滑断裂带并非还原环境，碳质富集源自有机碳的氧化。Sr是高应力环境同构造重结晶方解石带的特征元素，Zn是低应力环境裂隙充填型方解石脉的特征元素。