云南鲤科鱼类一新种──犀角金线鲃

描述采于云南省的金线属　鱼类一新种──犀角金线鲃（Ｓｉｎｏｃｙｃｌｏｃｈｅｉｌｕｓｒｈｉｎｏｃｅｒｏｕｓ，ｓｐ．ｎｏｖ）以头上长有一长角、眼小、侧线完全、体表裸露无鳞等区别于该属所有已知种。     

中国野鲮亚科鱼类一新属新种记述

描记采于贵州省茂兰自然保护区境内一洞穴的中国野鲮亚科（Labeoninae）一新属长臀鲮属Longanalus．sp nov和一个新种大鳍长臀鲮Longanalus macrochirous sp nov。新属以臀鳍分枝鳍条为7根等特征．区别于该亚科所有属；新种以偶鳍发达．胸鳍后伸达到腹鳍基，腹鳍后伸超过臀鳍起点等显著特征命名大鳍长臀鲮。     

龙游沐尘岩体中岩石包体的特征及成因

浙江龙游沐尘晚侏罗世石英二长岩体中包裹了大量暗色微细粒二长闪长质—辉长闪长质岩石包体，它们大小不一，形态各异，分布不均匀，以微细粒结构、具冷凝边构造并发育环斑长石为特征。应用岩浆动力学理论和岩相学、岩石地球化学研究表明，该岩体中的岩石包体是在层状岩浆房中不同成分岩浆大规模对流、不均一混合机制驱动下形成的，在成因类型上属淬冷包体。     

中国野鲮亚科鱼类一新属新种记述

描记采于贵州省茂兰自然保护区境内一洞穴的中国野鲮亚科(Labeoninae)一新属长臀鲮属Longanalus,spnov和一个新种大鳍长臀鲮Longanalus macrochiroussp nov。新属以臀鳍分枝鳍条为7根等特征,区别于该亚科所有属;新种以偶鳍发达,胸鳍后伸达到腹鳍基,腹鳍后伸超过臀鳍起点等显著特征命名大鳍长臀鲮。     

铁岭地区太古宙花岗岩系地质特征

铁岭地区太古宙花岗岩系由独立封闭的几个灰色片麻岩体组成，属英云闪长岩─奥长花岗岩系列。锆石单颗粒Ｐｂ－ｐｂ年龄为２５４８－２５５３Ｍａ。片麻岩体中包裹有斜长角闪岩、磁铁石英岩等变质表壳岩。花岗岩系稀土元素具有强分馏形式，形成于晚太古代大陆及大陆边缘环境，其北部为吉黑褶皱带寒武系变质岩系。华地地台与吉黑地槽之间由海西－燕山期中酸性侵入岩填充，形成宽约５＝１０ｋｍ的岩浆活动带。     

辽南金州地区的太古宙侵入岩

辽南金州地区的太古宙变质侵入岩，是由得胜片麻杂岩为代表的早期ＴＴＧ岩系和由亮甲店片麻岩、小黑山片麻岩及赵屯片麻岩组成的晚期石英闪长岩—低硅英云闪长岩—花岗岩系构成的，早期岩系呈奥长花岗岩演化趋势，晚期岩系显钙碱性演化趋势，属太古宙常见的两类岩石系列，其源岩来源陆壳，是陆壳角闪岩或石榴角闪岩部分溶融的产物。     

胶南地区前寒武纪侵入岩的岩石谱系单位划分及地壳演化

胶南地区的变质杂岩主要由中、晚元古代的变质深成岩组成。按照同源岩浆演化理论，这些深成岩可划归四个超单元：①海阳所超单元，由基性岩－中性岩－酸性岩构成一个较完整的岩浆演化序列，为中元古代幔源深成岩类，形成于洋内裂谷环境，属非造山岩浆岩类；②荣成超单元，由二长花岗岩类构成，为晚元古代壳源S型花岗岩类，形成于碰撞造山阶段，属同造山岩浆岩类；③铁山超单元，由石英正长岩－正长花岗岩组成，为晚元古代幔源分异型（A型）花岗岩类，形成于陆内张裂环境；④月季山超单元，由二长岩－二长花岗岩组成，为晚元古代壳幔混合源（Ⅰ型）花岗岩类，形成于板块碰撞后期，亦属同造山花岗岩类。胶南地区前寒武纪地壳演化进程为：在早元古代陆缘海的基础上，中元古代该区地壳拉张形成裂谷，海阳所超单元沿裂谷侵位；晚元古代地壳由拉张环境转变为挤压环境，裂谷闭合发生板块碰撞造山作用，伴随产生大量同造山岩浆岩类。其中板块碰撞引起的部分融熔作用形成荣成超单元，板块碰撞造成的局部拉张环境使幔源分异的A型花岗岩类铁山超单元定位，稍后壳幔混合岩浆沿造山作用产生的推覆构造空腔定位形成月季山超单元。     

青海省乌拉斯太地区早石炭世花岗质岩体地球化学特征及其地质意义

早石炭世花岗质岩体主要沿昆中断裂带两侧断续分布,多呈岩床、岩株状产出,根据岩性特征可划分为3类,即浅肉红色斑状二长花岗岩、肉红色正长花岗岩、肉红色中细粒碱长花岗岩.主量元素特征显示花岗质岩体全碱含量较高,显示出壳源的特点,为过铝质偏铝质花岗岩,属Ⅰ型花岗岩.稀土元素特征显示岩石属轻稀土富集型,重稀土相对平坦,轻重稀土分...     

鲁东前寒武纪岩石地层清理意见

厘定后的鲁东前寒武纪地层分区以王台－五莲为界，分为胶北地层小区和胶南地层小区。胶北地层小区层（岩）序为：晚太古代胶东岩群、早元古代荆山群、粉子山群、芝罘群，震旦纪蓬莱群。胶南地层小区层（岩）序为：晚太古代大山沟岩组，早元古代胶南岩群，震旦系朋河石组。对原胶南群作了重新厘定：原甄家沟组因其岩石属变形变质的二长花岗岩而被废弃；大山沟组绝大部分为变形变质二长花岗岩体，而仅将原划大山沟组一段的部分斜长角闪岩和黑云变粒岩厘定为大山沟岩组，隶属晚大古代；原划邱官庄组底部变质含砾砂岩新建为朋河石组；邱官在岩组和于象岭岩组合称为新义的胶南岩群，荆山群与粉子山群和胶南宕群可能属同时异相沉积变质产物。五莲群与粉子山群为同物异名因而废弃。     

鲁东前寒武纪岩石地层清理意见

厘定后的鲁东前寒武纪地层分区以王台－五莲为界，分为胶北地层小区和胶南地层小区。胶北地层小区层（岩）序为：晚太古代胶东岩群、早元古代荆山群、粉子山群、芝罘群，震旦纪蓬莱群。胶南地层小区层（岩）序为：晚太古代大山沟岩组，早元古代胶南岩群，震旦系朋河石组。对原胶南群作了重新厘定：原甄家沟组因其岩石属变形变质的二长花岗岩而被废弃；大山沟组绝大部分为变形变质二长花岗岩体，而仅将原划大山沟组一段的部分斜长角闪岩和黑云变粒岩厘定为大山沟岩组，隶属晚大古代；原划邱官庄组底部变质含砾砂岩新建为朋河石组；邱官在岩组和于象岭岩组合称为新义的胶南岩群，荆山群与粉子山群和胶南宕群可能属同时异相沉积变质产物。五莲群与粉子山群为同物异名因而废弃。     

Report on Pontoniinae shrimps (Crustacea: Decapoda) collected by Joint Chinese-German Marine Biology Expeditions to Hainan Island, South China Sea Ⅱ. Harpiliopsis, Ischnopontonia, Jocaste, Palaemonella, Periclimenaeus, Periclimenella

ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｔｈｅｆｉｒｓｔｐａｐｅｒｏｆｔｈｉｓｓｅｒｉｅｓ (ＬｉａｎｄＬｉｕ ,2 0 0 2 ) ,ｗｅｒｅｐｏｒｔｅｄ 3ｇｅｎｅｒａｗｉｔｈ 7ｓｐｅｃｉｅｓｏｆＰｏｎｔｏｎｉｉｎａｅ,ｃｏｌｌｅｃｔｅｄｂｙｔｈｅＪｏｉｎｔＣｈｉｎｅｓｅ ＧｅｒｍａｎＭａｒｉｎｅＢｉｏｌｏｇｙＥｘｐｅｄｉｔｉｏｎｓｔｏＨａｉｎａｎＩｓｌａｎｄ(ｗｉｎｔｅｒｏｆ1 990ａｎｄｓｐｒｉｎｇｏｆ 1 992 ) .Ｔｈｅｐｒｅｓｅｎｔｐａｐｅｒｒｅｐｏｒｔｓａｎｏｔｈｅｒ 6ｇｅｎｅｒａ ,ｗｉｔｈ 9ｓｐｅｃｉｅｓ,ｆｒｏｍＨａ…     

辽宁建平朝阳沟破火山口地质特征

朝阳沟破火山口出露面积约８０ｋｍ２，呈椭圆状，受北东与北西两组基底断裂控制，火山活动期为晚侏罗－早白垩世。火山活动以爆发为主，具多期次脉动喷发特点。岩浆演化由早期至晚期呈由中性到酸性，火山喷发序次由外向内由老至新，岩石结构由细至粗，晚期潜火山岩相正长斑岩沿放射状断裂侵入。     

广西河池五圩矿田构造应力场划分及力源探讨

五圩矿田位于广西南丹-河池锡多金属成矿带的南端,主干构造为NNW向的不对称短轴背斜,其上叠加了NE、SN、EW 3个方向的褶皱,它们在丹池带上都有表现.文章通过大量共轭节理、层面擦痕、断层派生小构造、次级褶皱等构造要素野外观测,室内计算,恢复了五圩矿田中生代(印支-燕山期) 4期构造应力场,各期主压应力方位依次为NEE、NW-SE、N WW-SEE及NNE向,前两期为印支期,后两期为燕山期.并探讨了其力源:印支期来源于古特提斯板块向北俯冲与江南古陆向南推移形成的SN向顺时针区域力偶;燕山期来源于丹池断裂的右旋或左旋走滑活动.     

Pattern and origin of spherulites in a rhyolite dike swarm,northeastern Cheongsong, Korea

IntroductionThe northeastern Cheongsong area is underlainby a sequence of sedi mentary rocks together within-trusive and extrusive volcanic rocks all of late Creta-ceous age(Lee&Hong,1973;Ki m&Park,1970;Hwang,1998).Theintrusions,comprising astock,a plug and numerous dikes,are well exposedat the current surface due tothe enormous erosion ofany sedi mentary or volcanic covered rocks.Thedikes forma dike swarmand some are intruded intothe plug.The dikes swarm may represent the subsurfaceexpress…     

Pattern and origin of spherulites in a rhyolite dike swarm,northeastern Cheongsong, Korea

Several NNW-trending Cretaceous rhyolite dikes in the northeastern Cheongsong area of southern Korea contain spherulitic fabrics and are locally quarried as an ornamental stone. The dikes, part of the Cheongsong dike swarm, contain a variety of spherulites which are characterized by radial array of acicular intergrowths from fibrous quartz and alkali feldspars. They are classified as some simple, multiple and compound spherulite types from flower-like patterns, and the types are different each other in spatial distribution within the dikes. The various radial fabrics suggest that they crystallized under the different cooling mechanisms and processes in rapidly cooling dikes. Spheroids lacking a flower-like pattern may be precipitated after compositional segregation in a supercooled magma. Simple acicular spherulites could be crystallized by devitrification of true glass which cooled rapidly below the transformation temperature, whereas layered multiple spherulites could result from a crystallization of supercooled magma at relatively rapid cooling rates above the transformation temperature. Acicular multiple spherulites could be produced from a combination of the above three mechanisms operating at slower cooling rates.     

Last glacial geomorphologic records in Mt Chelmos,North Peloponnesus,Greece

This study deals with the analysis of the glacial processes that have affected the relief of Mt Chelmos in northern Peloponnesus, Greece during middle and Late Pleistocene. The goal was to compile a combined geomorphological-geological map of the study area which would enable the chronological stratification of the glacial landforms cropping up on Mt. Chelmos. Chronological stratification was further aided by optically stimulated luminescence (OSL) dating. The map served as the basis upon which the reconstruction and discussion on the phases of the Middle-Late Quaternary paleoclimatic history of Mt. Chelmos have been made. A sophisticated semiautomated method was first used to analyze the Digital Elevation Model (DEM), combined with Aster, Quickbird and ALOS imagery in order to identify glacial and periglacial, as well as karstic features. Then, these features along with other nonrecognizable features from the remote-sensing images were documented in the field. In this way, several glacial landforms were identified, such as moraines and cirques, indicating extended glaciation phases during the middle and Late Pleistocene. Additionally, a ground moraine located at an altitude of 1900-2050 m, within the Spanolakos glacial valley, was dated using the OSL-dating method. The resulting ages indicate a phase of glacier advance/stabilization during MIS-5b (89-86 ka), which is in consistence with pollenrecord evidence from Greece and the Mediterranean.     

浙江长兴顾渚山优质紫笋茶与地质背景相关性分析

长兴水口顾渚山风景区的紫笋茶,是闻名国内外的优质名茶。本文在实地调查的基础上,分析了紫笋茶优异的品质与地质环境背景条件的相关性。特定的地质背景条件,首先造就了一个避风向阳、雨量充沛的小气候环境;特定的泥盆系与花岗岩类浸入岩的地层背景所形成的土壤,为茶树生长提供了大量的营养物质,特别是有益的微量元素对提高茶叶品质起到了重要作用;同时这一特定的背景条件下,形成了对茶树生长有利的酸性土壤。特定的水文地质背景条件．又提供了充足的水份,还补充了茶树生长所必需的营养物质。通过对环境背景条件的分析,最终提出了长兴县茶叶发展的方向。     

TWO NEW SPECIES OF THE GENUS DORYLAIMOPSIS DITLEVSEN, 1918 (NEMATODA : ADENOPHORA,COMESOMATIDAE) FROM THE BOHAI SEA,CHINA

Two nematode species of the genus Dorylaimopsis (Family Comesometidae) from the Bohai Sea are described. Dorylaimopsis rabalaisi n. sp. similar to D. punctata Ditlevsen, 1918 from which it can be separated by the small size, short and simple spicules without ventral apophyses or joint line. Dorylaimopsis turneri n. sp. differs from the closest species Dorylaimopsis angelae (Inglis, 1967) by its higher values of de Man ratio 'a', much shorter spicules and higher ratio of gubernacular to spicules length. A key to species of the genus based on the key by Jensen (1979) is given .     

BROOD DISCRIMINATION, MATURATION, AND POPULATION STRUCTURE OF THE HAIRTAIL, TRICHIURUS HAUMELA (PISCES, TRICHIURIDAE) IN NORTHERN EAST CHINA SEA

Based upon analysis of the seasonal fluctuation of GSI (gonado-somatic index), the spawning period of the hairtail extends from April to October. The maximum time difference between the early and the late brood individuals is about half a year. It is possible to distinguish the early brood and the late brood on the basis of the diameter of the first ring, setting 1.32 mm as a border line. Therefore, the identification of the first ring was solved in dispute.The maturation stages can be identified on the basis of the macroscopical and microscopical characteristics of the ovary; i.e., immature (II-A, B), maturing (III-C, D, E, IV-F), mature (IV-G, V-H, VI-I) and recovering (VII-J). Maturation is completed in the course of one year from different brood seasons. The smallest size at first maturity in female was about 170-180 mm in length and 80-100 grams in weight.There were two discrete groups in autumn which shown the same population unit in which those individuals may separate temporarily into different     

REPORT ON PONTONIINE SHRIMPS (CRUSTACEA: DECAPODA)COLLECTED BY JOINT CHINESE-GERMAN MARINE BIOLOGY EXPEDITIONS TO HAINAN ISLAND, SOUTH CHINA SEA Ⅰ. ANCHISTUS, CONCHODYTES, CORALLIOCARIS

The present paper reports 7 species of pontoniine shrimps collected from Ha inan Island, South China Sea, by the Joint Chinese-German Marine Biology Expeditions , in which, Conchodytes nipponensis (De Haan, 1844) and Coralliocaris brev irostris Borradaile, 1898 are new records from Chinese waters.