白云鄂博矿床赋矿微晶丘的论证

据白云鄂博矿床赋矿白云岩的分布、与下伏砂岩及上覆板岩的关系及内部特征,识别出该白云岩为一种生物丘——微晶丘。结合其他证据,认为白云鄂博矿床是与微晶丘及火山作用和碱性热液叠加有关的层控矿床。     

白云鄂博矿区碱性基性岩—碳酸岩岩墙岩石学研究

白云鄂博地区广泛发育碳酸岩墙 -碱性基性岩墙,通过对其岩石学、矿物学、岩石化学、稀土元素、微量元素的系统研究表明,碳酸岩墙为火成碳酸岩,部分碳酸岩墙的REE含量高达14 6 75 %,与赋矿白云石碳酸岩体的REE含量(最高达 10 % )相近,两者均为富稀土矿石。矿区基性岩墙的K2 O +Na2 O含量( >5 % )高于普通基性岩石(4 % ),表明它们属于碱性岩类,是碱性基性岩墙。碳酸岩墙 -碱性基性岩墙的REE与微量元素的分配型式近似,Sr、Nd、Pb同位素特征亦相近,表明它们形成于一个比较特殊的、近似的源区,两者有一定的成因关系。     

恭祝著名地质学家王恒升院士百岁华诞

8月4日我国著名地质学家王恒升院士在家中愉快地度过了他的100岁生日,他是我国地学界最年长的一位。是日,科学技术部、国土资源部、国家计划生育委员会、中国科学院、中国科学院学部主席团、中国地质学会、中国地质科学院、中国地质科学院地质研究所等单位领导和他的学生、晚辈等都到王老家中向他表示祝贺。徐冠华部长和路甬祥院长联名发来了热情洋溢的贺信。王恒升院士在瑞士读书的母校、他的同学——国际宝石中心的E.J.Gubelin先生等也发来了贺信。中国地质科学院和中国地质科学院地质研究所为王恒升院士100大寿特别印制了精美的画册。     

Interrupting a multi-species bioinvasion vector: the efficacy of in-water cleaning for removing biofouling on obsolete vessels

Vector management is the primary method for reducing and preventing nonindigenous species (NIS) invasions and their ecological and economic consequences. This study was the first to examine the efficacy of in-water scrubbing using a submersible cleaning and maintenance platform (SCAMP) to prevent invertebrate species transfers from a heavily fouled obsolete vessel. Initially, prior to treatment, 37 species were recorded in a biofouling matrix that reached 30cm depth in some locations. The bryozoan Conopeum chesapeakensis, and bivalves Mytilopsis leucophaeata and Ischadium recurvum, were dominant sessile species that created structure, supporting mobile biota that included crabs and the associated parasitic barnacle Loxothylacus panopae. Scrubbing had the effect of significantly reducing organism extent and the number of species per sample, but a substantial and diverse (30 species) residual fouling community remained across the entire vessel. Further assessments of management options are needed to prevent potentially damaging NIS transfers. Additional measures taken within an integrated vector management (IVM) strategy may further improve invasion prevention measures.     

Assessment of polyaromatic hydrocarbon degradation by potentially pathogenic environmental Vibrio parahaemolyticus isolates from coastal Louisiana, USA

A presumed Vibrio parahaemolyticus isolate from Chesapeake Bay, Maryland, USA was previously reported to grow on phenanthrene, a polyaromatic hydrocarbon (PAH) found in crude oil. Following the Deepwater Horizon oil spill in the Gulf of Mexico, concerns were raised that PAH-degrading V. parahaemolyticus could increase in abundance, leading to elevated risks of disease derived from shellfish consumption. To assess this possibility, we examined responses to naphthalene and phenanthrene of 17 coastal Louisiana environmental V. parahaemolyticus isolates representing five distinct genotypes. Isolates were obtained immediately after the spill began and after oil had reached the Louisiana coast. None of the isolates grew on or oxidized either substrate and a naphthalene degradation product, 1-naphthol, substantially inhibited growth of some isolates. The use of PAH by V. parahaemolyticus is unusual, and an increase in human health risks due to stimulation of V. parahaemolyticus growth by oil-derived PAH under in situ conditions appears unlikely.     

对《中国东部新生代玄武岩及上地幔研究(附金伯利岩)》一书的介绍

由中国地质大学(北京)池际尚教授主持的《中国东部新生代玄武岩及上地幔研究(附金伯利岩)》科研课题,取得丰硕成果,并获得地质矿产部1988年度科学技术一等奖。现由她主编成相同名称的专著,已由中国地质大学出版社正式出版发行。该专著资料丰富,图文并茂,叙述严谨,结论可靠,是一本不可多得的论著。     

Responses of a Northern Adriatic Ampelisca-Corbula community to seasonality and short-term hydrological changes in the Po river

During the 20th century, increased nutrient inflow has increased the frequency and intensity of eutrophication events in the North-western Adriatic Sea. More recently, evidence of a reduction in the Po river flow and a recovery of the benthic environment were reported. We examined the role played by Po river regime and seasonality in determining the temporal pattern of macrozoobenthos variation: samples were collected from a site located 10-12km off Cesenatico during two years from October 2004 to September 2006, when the mean Po discharge remained exceptionally low. 88 taxa were found, and the community was dominated by few species: Ampelisca diadema, Lumbrineris latreillii, Corbula gibba, Aricidea claudiae, Levinsenia gracilis and Nucula nucleus account for about 80% of total abundances. The density of these species exhibited a marked seasonal variability. Moreover, the total abundance and the density of the sensitive species, A. diadema, were negatively affected by several disturbance events (hypoxic conditions, frequent storms and an anomalous winter flood) that occurred between November 2005 and March 2006. The reduction of C. gibba and the increase of A. diadema densities observed in the investigated period, and verified recently by other authors could be related to the reduction in river inputs as a consequence of climatic changes.     

环北极填图计划：北极新的磁异常和重力异常图

环北极地球物理和基岩资料汇编项目由几个国家（俄罗斯、瑞典、芬兰、丹麦、美国、加拿大、德国和挪威）的代表机构执行。本项目编制了一套以60°N为界的北极区1：500万地顷和地球物理数字图集。