垃圾焚烧发电：商机与风险并存

2009年进入尾声，广州番禺因垃圾焚烧发电厂事件再度闻名全国。然而在社会事件背后，细心的产业人士们发现：位于舆论中心的番禺华南板块其实是当前全国各地、数百个社区的缩影。垃圾处理问题已经在中国大地引起一系列连锁反应，各种争议也从未消歇。专家指出，对于如何有效应对垃圾危机，在前端垃圾分类、资源化处理、完善制度建设、加强监管、加强人员培训等诸多方面，需要政府加大监管力度，完善产业规划。     

外贸指数的编制及其与上证指数的相关性分析

证券市场在中国经济发展中“晴雨表”的作用日益明显， 通过对证券市场中每一行业板块的市场表现的分析，可以从一个角度总结出该行业的经营发展情况⒀通过编制外贸指数及将其与上证指数进行相关性分析， 提供一种外贸行业经营情况的分析方法     

中华黄蜡石的地质学探讨

文章首次研究了黄蜡石中的一系列构造,特别论述了气泡构造的重要性,例如麻脸构造等.研究结果表明:黄蜡石仅分布在华南地区扬子板块的外缘,它们由海槽中化学成因的硅质岩所组成,形成于晚震旦世;它们的生成与海底火山活动有关;黄蜡石形成以后,又遭受轻度变质作用及以后的风化作用.     

“沉积·资源·环境”研究专栏征稿

征稿范围:地质基本科学问题、应用及发展全球环境变化与沉积作用盆地分析与板块运动盆地运动学的新理论能源的勘探与开发大地构造沉积学层控矿床岩相古地理生物成矿作用流域开发与环境保护层序地层与事件地质油气储集层的成岩作用     

Zircon U-Pb ages of olivine pyroxenite xenolith from Hannuoba: Links between the 97—158 Ma basaltic underplating and granulite-facies metamorphism

U-Pb zircon dating by LA-ICP-MS andSHRIMP for one olivine pyroxenite yields complex agepopulations including Mesozoic ages of 97-158 Ma and 228±8.7 Ma, Early Paleozoic ages of 418--427 Ma, Paleoprotero-zoic age of 1844±13 Ma, Neoarchean age of 2541±54 Ma andmiddle Archean age of 3123±4.4 Ma. The 97--158 Ma and228±8.7 Ma zircons show typical igneous oscillatory zona-tion in CL images, suggesting two episodes of magmaticevents. Overlapping of the 97-158 Ma ages with that ofgranulite xenoliths indicates that the Mesozoic granu-lite-facies metamorphism was induced by heating from thebasaltic underplating at the base of the lower crust. Bothprocesses lastcd at least from about 158 to 97 Ma. Ages of 418--427 Ma could be records of the subduction of Mongoliaoceanic crust under the North China craton. Ages of 1.84 Ga,2.54 Ga and 3.12 Ga correspond to the three importantcrust-mantle evolutionary events in the North China craton,and imply preservation of Precambrian lower crust in thepresent-day lower crust.     

Rodinia裂解与华南微板块形成和演化

介绍了Rodinia研究的历史、现状及主要进展,分析了华南相关地块在Rodinia中的位置以及从Rodinia到Pangea的演化历程.分析结果表明,扬子陆块从Rodinia裂离后,其间在Gondwana形成时,可能发生过湘桂地体、云开地体、浙闽地体、保山地体和腾冲地体的碰撞拼贴造山作用过程.在古特提斯演化阶段,这些地体随古特提斯洋的开启而与扬子陆块裂离,并逐渐形成多岛洋的构造格局,之后又随Pangea的形成而再次与扬子陆块碰撞拼贴增生.因此,Rodinia,Gondwana,Pangea等的形成、裂解和裂离后地体的拼贴增生是认识华南大地构造格局和演化的关键之一.Rodinia应该是华南大地构造研究值得重视的重要课题.     

一种由α-石英到柯石英转变的新途径

静高压合成柯石英的压力和温度的实验条件是提出地球板块折返假说的基础. 然而，静高压没有反映局部碰撞和剪切应力的因素. 本文考虑了这些因素，提出了一种利用高能机械球磨与静高压相结合的,可以模拟地表柯石英合成的实验室研究方法. 发现了存在一个机械球磨时间阈和一种由机械碰撞引起的α-石英中间亚稳相, 其静高压致晶化成柯石英的条件为3.0GPa，923K，小于1.0min. 沿袭传统的板块折返假设，对应此条件的板块俯冲深度应比Coes的结果浅20km。发现了10s量级的柯石英的短时间快速合成现象. 此方法合成的柯石的Raman峰，涵盖了以前得到的天然柯石英和人工合成的柯石英的Raman信息. 阐明了此方法合成的柯石英在地质科学上的含义，并提出另一种可能的地表柯石英形成机制.     

高校上市公司面临洗牌

在股票市场中，高校上市公司因大量储备人才及科研成果而始终被市场人士所关注。特别是1996年以后东大阿派、天大天财及清华同方、清华紫光等上市后，高校板块就成为科技上市公司的重要组成部分，同时由于高校上市公司的数量也已经达到了33家左右，因此，高校上市公司具有一定的投资气候。     

Neoproterozoic magmatic activity and global change

Neoproterozoic is a very important time in the history of the Earth, during which occurred supercontinent breakup, low-latitude glaciation, and biotic diversification.These concern a series of interdisciplinary studies involving ancient plate motion, climate change and life evolution, resulting in many forefront topics of general interest in the earth sciences. These include exact ages bracketing the Cryogenian System and glaciations, initial age and lasted duration of supercontinent breakup, dynamic reconstruction of China continents in supercontinental configurations, the nature of rift magmatism and extent of hydrothermal alteration, paleoclimatic implication of water-rock interaction and Iow-^18O magmatism, and relationship between supercontinental evolution and global change. A number of outstanding advances in the above aspects have being made by Chinese scientists, leaving many important issues to be resolved: (1)did the Cryogenian start at either 800 to 820 Ma or 760 to 780 Ma? (2) was South China in the supercontinental configuration located in either southeast to Australia or north to India? (3) are Paleoproterozoic to Archean ages of crustal rocks a valid parameter in distinguishing North China from South China? Available observations suggest that Neoproterozoic mantle superwelling occurred as conspicuous magmatism in South China but as cryptical magmatism in North China. Mid-Neoproterozoic mantle superplume event and its derived rift-magmatism would not only result in the supercontinental demise, but also play a very important role in the generation and evolution of the snowball Earth event by initiating the global glaciation, causing the local deglaciation and terminating the snowball Earth event.