直氟碳钙铈矿6R,3R多型及其微孪晶结构的透射电镜研究

运用透射电镜技术，发现了三方晶系直氟碳钙铈矿（Synchysite）多型和微孪晶的存在，确定其中的多型有两种，即6R和3R多型，在3R多型中发现有微孪晶存在，这种微孪晶属（0001）孪晶面的面律（旋转）孪晶。由于直氟碳钙铈矿是钙铈氟碳酸盐系列矿物的一个端员组分，因此，对其多型和微孪晶的研究，有助于揭示该系列中间组分矿物多型和微孪晶的形成机理。     

内蒙哲斯腕足动物群混生类型及古气候变化

根据早二叠世中国腕足动物地理分区和哲斯组腕足动物群中各属在世界的分布,筛选出一些典型冷暖属.据其地层产出特点确定了这个动物群的混生类型,并进一步讨论了哲斯期的古气候变化.     

一种亟待重新认识的铜矿床——滇中土状铜矿

滇中土铜矿长期被认为是一种不可利用的铜矿床,新的湿法冶金技术应用使之成为了效益型铜资源。滇中土状铜矿产于中元古界昆阳群落雪组的土状风化壳内,分为面型和线型两种矿床类型。主要铜矿物为孔雀石、硅孔雀石、微粒状赤铜矿和黑铜矿、少量残余含铜硫化物。其矿石平均品位同于原生硫化矿。与原生矿石相比,土状氧化铜矿石ＳｉＯ２、Ａｌ２Ｏ３、Ｆｗ２Ｏ３、Ｍｎｏ明显富集,ＣａＯ与ＭｇＯ大量淋失,由碱性矿石变成了可酸浸的非     

软弱土层的自钻式锚固技术

从软土壤的锚固材料、设计方法、施工工艺等方面,论述软弱土层自钻式锚固技术。     

沧州市区地热地质特征及地热资源开发探讨

沧州市区2000m以内 ,主要为馆陶组热储 ,次为沙河街组和寒武-奥陶系热储 ,本文通过对热储条件的分析及地热资源计算 ,提出该区地热合理开发设想。     

中国大陆构造的基本模型

中国大陆是由许多微、小陆块组成的复合大陆；以陆块间的软碰撞，多旋回缝合和复合造山作用为特征；具多旋回分阶段演化、多层式镶叠和立桥式结构；其动力学过程是冈瓦纳裂解和亚洲的增生。     

An Example of Island-Arc Petrogenesis: Geochemistry and Petrology of the Southern Luzon Arc, Philippines

Volcanism throughout the Luzon arc is associated with eastwardsubduction of the South China Sea floor along the Manila Trench.The southern section of the arc, the focus of this study, extendsfrom the Lingayen-Dingalan fault to the small islands just southof Luzon. Two segments appear to exist along this section ofthe arc the northern Bataan and southern Mindoro segments whichare separated by the Macolod Corridor. The volcanic rocks have typical arc phenocryst mineralogies:olivine, clinopyroxene, plagioclase, and titanomagnetite inthe most mafic rocks and clinopyroxene, plagioclase, orthopyroxene,titanomagnetite, ? amphibole in the more felsic samples. Complexzoning, sieve textures, and decoupling of incompatible traceelements suggest that processes such as assimilation have takenplace. The rocks from the study area range from basalts to rhyolitesand show typical calc-alkaline features. The rocks of the MacolodCorridor and Mindoro segment are particularly enriched in largeion lithophile elements (LILE), light rare earth elements (LREE),and radiogenic Sr compared with the Bataan segment. The datafall within the mantle array on Sr-Nd isotopic diagrams andgrade toward higher Sr and lower Nd isotopic values from northto south. A likely source for the volcanics of this study is either amid-ocean ridge basalt (MORB)-type mantle that undergoes higherdegrees of partial melting than regions involved in MORB generationor a previously depleted source. We suggest that the high fieldstrength element (HFSE) anomalies have been derived throughdifferential element partitioning during fluid transport fromthe subducted lithosphere to the mantle wedge. Continental crustal material seems to play a significant roleparticularly in the Macolod Corridor and the Mindoro segment,based on the high LILE, La/Sm ratios, radiogenic Sr isotopes,and ¹⁸O values. The Macolod Corridor and the Mindoro segmenthave undergone source contamination by crustal material fromthe North Palawan-Mindoro crustal block either during the collisionof this block with the Manila Trench or by subduction of sedimentsrich in this crustal material. A similar component has alsobeen detected in the Bataan segment but in minor amounts. Thetrace element and isotopic differences between the northernand southern sections of the arc are interpreted in terms ofvariable composition (i. e., variable amounts of a crustal componentintroduced from the Palawan-Mindoro crustal terrain) of themetasomatic fluids released into the source.     

阴山地区印支期碱性侵入岩岩石地球化学特征

通过系统的矿物学、岩石学、地球化学研究，确立了阴山地区印支期碱性岩在空间上分为南北两条近东西走向的岩带。南带以霓辉正长岩为主，北带以碱性正长岩为主。南北两带岩体均富集轻稀土元素、大离子亲石元素和高场强元素，而Cr、Ni等相容元素含量很低。结合Nd、Sr、Pb同位素特征，认为该地区印支期碱性岩源自富集地幔，并受到不同程度的地壳物质混染。     

线性石蜡基钻井液的试验研究

近期在室内研制成功了新型的第二代合成基钻井液的代表——线性石蜡基钻井液。首先从大量的试验结果中优选出了线性石蜡基钻井液配方 ,在此基础上 ,对线性石蜡基钻井液的性能进行了系统的评价。研究结果表明 ,优选出的线性石蜡基钻井液配方简单。和柴油基钻井液相比 ,线性石蜡基钻井液具有优良的热稳定性、页岩抑制性、润滑性能和储层保护性能 ,可用作深井复杂地层的钻井液     

山东山旺盆地中新世两个蚂蚁新属（Heteromyrmex Zhang,1989和Tolylasius Zhang,1989）的修正

1989年,张俊峰发表了山东山旺盆地中新世（N2）2个蚂蚁新属新种：Heteromyrmex atopogaster Zhang,1989和Tolylasius inflatus Zhang,1989。经检验,前一个属是基于不实的观察结果,新属、种应予废除,作为未定属种归人蚁亚科（Formicinae);后一个属的建属根据都非建属的根据,其他的特征系毛蚁属（Lasius)的属征范围,没有建属条件,属应予废,保留其种,转移到毛蚁属。