南设得兰群岛、比斯科群岛及其附近浮游多毛类动物初步报告

本文报导了我国首次南极洲和南大洋考察队,在南设得兰群岛和比斯科群岛及其附近系列的浮游多毛类动物8种,隶5属4科,有4种是南设得兰群岛首次报告,两种为南极特有种,对每种的分类异名、形态及地理分布均有描述.     

大洋洲斐济群岛的成矿地质背景、矿床类型及成矿期划分

斐济群岛具有厚而年轻的硅镁质地壳,其成矿作用与构造演化有着密切的联系。斐济群岛的地层主要由新生代海底碎屑型火山岩及相关沉积岩组成。碳酸盐岩和在中-晚中新世一次重要的构造运动中侵入的辉长岩-英云闪长岩质的深成岩也很发育。斐济群岛的矿床类型包括各种块状硫化物型矿床、斑岩型铜金矿、夕卡岩型铜多金属矿、浅成低温热液型金矿、沉积型锰矿、残积矿床、砂矿床等。斐济群岛的成矿期有4个不同的阶段（时期）,这些阶段（时期）与构造运动紧密相关,反映了纵贯斐济群岛的各种矿化类型的空间和时间分布特征。     

老挝-越南长山褶皱带似斑状角闪黑云二长花岗岩LA-ICP-MS锆石U-Pb年龄及其地质意义

Phia Bioc花岗岩体位于老挝-越南长山褶皱带北西部马江缝合带与哀牢山-斯雷博河缝合带之间,镜下显微鉴定岩石类型为似斑状角闪黑云二长花岗岩。锆石阴极发光图上具有典型的震荡环带,锆石的稀土元素配分模式表现为轻稀土元素亏损,重稀土元素富集的左倾曲线,具有强烈正Ce异常和中等负Eu异常,其Th/U比值均大于0.1,表明所测锆石为典型的壳源岩浆锆石。锆石LA-ICP-MS U-Pb同位素分析结果显示,Phia Bioc岩体的年龄为(244.4±1.2)Ma,属于中三叠世安尼期岩浆活动的产物。对长山褶皱带印支期的区域地质背景、岩浆活动以及思茅-彭世洛陆块-东印支陆块-越北-华南陆块间的构造演化关系的综合分析表明,Phia Bioc花岗岩体是印支早期东印支陆块与越北-华南陆块沿马江缝合带同碰撞造山期挤压剪切环境的产物。     

失之东隅收之桑榆——库克群岛的星空

2010年7月12日PK到南太平洋库克群岛看日食,真正应验了一句古话：失之东隅,收之桑榆。2009年PK在中国上海看日食,结果地球人都知道,PK被淋成了落汤鸡。再接再励的PK,2010年在南太平洋的库克群岛再追日食,想不到又碰上那古怪的积雨云,就在日食食甚时,把太阳遮住了,让岛上云下的天文迷气得直跺脚!PK也是伤心至极,仰天长叹：为什么受伤的总是我？     

川山群岛发展滨海旅游的对策研究——基于舟川两群岛滨海旅游资源条件的比较

川山群岛和舟山群岛均为我国八大群岛之一,具有诸多共同之处,但两群岛滨海旅游差异大,其深层原因值得深思。对两者旅游业发展的资源和条件进行深入比较分析,提出川山群岛旅游业发展的对策。     

2009年8月9日日本伊豆群岛地震矩张量解

2009年8月9日10点55分56秒协调世界时（UTC）,在日本本州以南的伊豆群岛地区发生了Mw7.2地震,震源深度303km．作者利用矩张量快速反演技术,通过反演全球台网的宽频带Ｐ波波形得到了这次地震的矩张量解,并判断走向188deg;、倾角90deg;、滑动角79deg;的节面是地震发生的断层面．      

The changes of pigment contents and their environmental implications in the lake sediments of Ny-(A)lesund, Svalbard, the Arctic

According to palaeoclimatic and modern instrumental data, numerous studies have indicated that the Arctic climate has undergone a significant warming during the past 100 years, and this may lead to significant impact on the fragile lake ecosystem. In this study, we collected a lake sediment core from the Ny-(A)lesund of Svalbard and determined the concentrations of four pigments including chlorophyll derivatives, total carotenoids, oscillaxanthin and myxoxanthophyll in the sediments. Combined with other physical and chemical proxies such as calcium carbonate, total organic carbon, biogenic silicon etc., we have reconstructed the historical changes of lacustrine primary productivity in Ny-(A)lesund, especially for the past 100 years. The results showed that during the period of Little Ice Age (LIA), the climate was unfavorable for the growth of the lake algae, and thus the lacustrine productivity declined. This result was supported by the relatively low contents of pigment and biogenic silica in the sediments. In contrast, the contents of total organic carbon (TOC) and sediment pigments increased significantly in the upper 5 cm (~1890AD), reflecting the rapid growth of the lake algae, thus the great increase of lacustrine primary productivity, corresponding to the warming climate after LIA. However, the biogenic silica in the upper sediments still had a relatively low level, and this might be related to the growth competition with other algae species. Over the past 100 years, the ratio of Osc/Myx in the sediments decreased continuously, indicative of durative increase of myxoxanthophyll in blue-green algal pigments, and this might imply that the human activity had enhanced the nutrition level of the lake in the Arctic region.     

黄河站与斯瓦尔巴群岛

斯瓦尔巴群岛自然资源丰富,17世纪时期,斯瓦尔巴群岛附近海域渔业发达,渔民已经开始在这里捕杀鲸鱼、海豹、海象等海洋生物。由于长期过量的捕杀,到18世纪末期,渔业开始衰落。斯瓦尔巴群岛各个岛屿上储存着丰富的煤炭资源,附近海域蕴藏着丰富的石油资源。     

西南极南设得兰群岛地层对比与划分

对南设得兰群岛基岩区进行地质调查和研究,恢复其地层层序与演化过程.通过野外考察和资料收集,对比分析了前人年代学、地球化学、古地磁学、古生物学、地层学等方面的研究成果,将南设得兰群岛地层划分为24个岩石地层单元,建立了南设得兰群岛中—新生代火山-沉积地层层序和年代学格架.研究表明;南设得兰群岛火山活动早白垩世—早中新世总...