邹平王家庄铜矿床成矿地球化学及成因探讨

王家庄铜矿床的矿化脉石英中流体包裹体均一温度介于116 ~ 566 ℃之间,均值为 289 ℃;盐度介于7.2%～63.2% NaCleq,均值为21.1% NaCleq。流体的气相成分主要为H2O和CO2。在均一温度为240 ~ 440 ℃区间内,出现了富气相的两相水溶液包裹体、富液相的两相水溶液包裹体和含子晶的三相水溶液包裹体共存现象,以及加温后富气相包裹体均一到气相和同期富液相包裹体均一到液相的特征,表明成矿流体曾发生过沸腾作用;其中第一次发生于360 ~ 400 ℃,主要形成高温、高盐度含子晶的三相水溶液包裹体和高温、中盐度富液相的两相水溶液包裹体及高温、低盐度富气相的两相水溶液包裹体;第二次发生于240 ~ 320 ℃,主要形成高—中温、高盐度的含子晶的三相水溶液包裹体和高—中温、中盐度富液相的两相水溶液包裹体及高—中温、低盐度富气相的两相水溶液包裹体;之后主要形成富液相的两相水溶液包裹体,具有中低温和中盐度的特征。矿化脉石英中的δ18OH2O介于-1.14‰ ~ 1.79‰之间,均值为0.94‰;δD介于-63.70‰ ~ -56.50‰之间,均值为-59.8‰;说明王家庄铜矿床的成矿流体主要来源于岩浆,后期混入大气降水。矿石矿物的δ34S变化于-8.80‰ ~ -2.80‰之间,均值为-6.33‰。矿石矿物的n(206Pb)/n(204Pb)介于18.1684 ~ 18.3637之间,均值为18.2892;n(207Pb)/n(204Pb)介于155546 ~ 156342之间,均值为155777;n(208Pb)/n(204Pb)介于38.1286 ~ 38.4840之间,均值为38.2780。说明矿石具有贫重硫和富放射性成因铅的特征,硫、铅主要来源于深部,后期可能受到地壳物质或大气降水的混染。     

中国近海海水中几种微量金属离子的分布研究

中国近海海水中的锌等微量元素，尚未进行过较为广泛而可靠的分布研究。极为零星的资料，还是近几年来在沿岸进行污染调查时，用陈旧的方法测定的。 世界海洋海水中微量元素的含量，不同文献报道的数据，常有一定的差别。这是自然变化，抑方法误差(包括所测形态)，是值得研究的。 本文采用单池示差反向极谱法，比较广泛而可靠地研究了中国近海海水中,锌等微量，元素的离子(和不稳定络合物)的地球化学分布。测定锌、铅、铜、镉时，样品不加任何试剂，因而避免了元素存在形态的转移及被测离子的带入或损失。     

粘性泥石流残留层的形成及减阻作用--以云南蒋家沟泥石流为例

通过对云南蒋家沟粘性泥石流的野外观测 ,讨论了粘性泥石流残留层的定义特征 ,在大量实测数据基础上 ,分析了残留层易形成时段的特性 ;分别对一次泥石流过程、若干阵泥石流和一阵泥石流残留层的变化进行了相关分析 ;最后用观测数据分析了泥石流残留层的减阻作用     

山东中生代橄榄安粗岩系火山岩的地质、地球化学特征及岩石成因

山东中生代橄榄安粗岩系火山岩主要分布在沂沭断裂带及其两侧的断陷型陆相火山盆地中，为早白垩世火山活动的产物．Ｒｂ－Ｓｒ全岩等时年龄变化于１１１．４～１１９．６Ｍａ．岩石组合主要为粗面玄武岩－橄榄安粗岩－安粗岩－粗面岩．这套岩石在化学上具有富碱富钾、富铝贫钛、高氧化系数及富轻稀土和大离子亲石元素的特点，并具有较高的ＩＳｒ值和明显偏低εＮｄ值．根据对岩石地质、地球化学特征和产出构造环境的详细分析，表明这套岩石的成因应主要是富集型地幔的部分熔融     

Characteristics of Volcanic Rocks in the Shoshonite Province, Eastern China, and Their Metallogenesis

The shoshonite province in eastern China is characterized by extensive distribution (ca. 80000 km2) of Late Jurassic-Early Cretaceous (165-100 Ma) shoshonite series with subordinate high-K calc-alkali series. It was formed in a dominantly tensile stress field. In comparison with their analogues in island arcs and active continental margins in other countries, the volcanic rocks in the shoshonite province have their specific characteristics in petrology, mineralogy and geochemistry as well as related mineralization association, which are the comprehensive reflection of the special composition and structure of the mantle and crust of the province and the special Mesozoic regional tectonic setting.     

滦平盆地陡坡带下白垩统西瓜园组水下粗碎屑岩沉积特征及搬运机制

为探讨陆相断陷湖盆陡坡带构造活动控制下水下粗碎屑岩沉积特征、搬运机制及其演化规律,以滦平断陷盆地陡坡带下白垩统西瓜园组为研究对象,采用无人机倾斜摄影、实测剖面、砾石定向性定量表征等技术方法,从沉积背景、岩相类型、沉积单元及相序特征等方面开展野外露头解剖工作.滦平盆地西瓜园组沉积时期,近岸水下扇沉积于构造沉降速率大、湖平面上升、深水、古地貌陡峭环境,洪水携带粗碎屑沉积沿陡坡带入湖,底部发育与地震活动相关的砾质碎屑流,伴随发育滑动—滑塌沉积,上部发育高密度浊流.随着沉积物不断供给,斜坡坡度逐渐减小;随着粗碎屑沉积搬运距离不断增加,砂砾质碎屑流中砾石表现出明显定向性,高密度浊流所占厚度比例增加;末端以低密度浊流为主.扇三角洲沉积于构造沉降速率相对较低、水深相对较浅、古地貌相对平缓的环境,发育相对成熟的供源体系,汇水系统长度较长,扇三角洲前缘粗碎屑岩由碎屑流向高密度浊流、牵引流、低密度浊流转换.      

厦门同安西柯对虾养殖池的细菌数量动态

本文研究了对虾养成期间养殖池生态系中细菌的数量动态,探讨其变化规律与虾病的关系。结果表明,总细菌、弧菌和发光细菌在水体、底质和虾体中的数量变化各异。在水体各菌数与其环境因子的关系中,除了总菌数与COD存在着正相关外,其它的不存在相关性。虾体的总细菌、弧菌和发光细菌的数量（以细胞计）可以用来预报虾病,三者的阅值分别为107个　／g（湿重）、105个／g（湿重）和104介／g（湿重）。通过对对虾的细菌学跟踪监测,可以及时采取有效的应急防治措施。     

Seismic activity related to the 1991 eruption of Colima Volcano,Mexico

Ten years after the last effusive eruption and at least 15 years of seismic quiescence, volcanic seismic activity started at Colima volcano on 14 February 1991, with a seismic crisis which reached counts of more than 100 per day and showed a diversity of earthquake types. Four other distinct seismic crises followed, before a mild effusive eruption in April 1991. The second crisis preceded the extrusion of an andesitic scoriaceous lava lobe, first reported on 1 March; during this crisis an interesting temporary concentration of seismic foci below the crater was observed shortly before the extrusion was detected. The third crisis was constituted by shallow seismicity, featuring possible mild degassing explosion-induced activity in the form of hiccups (episodes of simple wavelets that repeat with diminishing amplitude), and accompanied by increased fumarolic activity. The growth of the new lava dome was accompanied by changing seismicity. On 16 April during the fifth crisis which consisted of some relatively large, shallow, volcanic earthquakes and numerous avalanches of older dome material, part of the newly extruded dome, which had grown towards the edge of the old dome, collapsed, producing the largest avalanches and ash flows. Afterwards, block lava began to flow slowly along the SW flank of the volcano, generating frequent small incandescent avalanches. The seismicity associated with the stages of this eruptive activity shows some interesting features: most earthquake foci were located north of the summit, some of them relatively deep (7–11 km below the summit level), underneath the saddle between the Colima and the older Nevado volcanoes. An apparently seismic quiet region appears between 4 and 7 km below the summit level. In June, harmonic tremors were detected for the first time, but no changes in the eruptive activity could be correlated with them. After June, the seismicity decreasing trend was established, and the effusive activity stopped on September 1991.     

山东及其沿海地区强震（M≥6）发生的地质构造背景

本文总结了山东及其沿海地区Ｍ≥６级地震发生的地质构造背景，发现山东及其沿海地区强震活动很少发生在新构造单元内部，而是主要集中于新构造单元边界上，活动断裂对强震具明显的控震作用，不同活动时代，不同切割深度断裂，其控震能力不同，活动断裂交汇处是发生强震较多的地方。     

山东中部一条明显的北西向中强地震带

长清－临沂地震带是山东中部一条明显的北西向中强地震带,由９次中强地震组成。这些地震沿北西向展布,主要分布在四个震源区,大致呈５０￣５５ｋｍ等间距分布。除１６６８年郯城地震与北北东向的郯庐断裂带有关外,其它地震受北西向蒙山断裂控制,是该断裂各为层段新活动的结果。另外,该地城带内地震的发生还有一定深部构造背景。未来应注意研究该带内再次发生中强地震的可能。