下扬子海区陆陆碰撞的岩石学证据和油气地质意义

来源 :第十二届全国古地理学及沉积学学术会议 | 被引量 : 0次 | 上传用户:learn_vb
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  通过千里岩岛的最新地质调查,研究苏鲁造山带超高压变质带的P-T-t轨迹,特别是超高压矿物生长成分环带、扩散环带和蚀变作用特征以及年代学研究的变化,区分苏鲁造山带超高压变质带为绿帘角闪岩相进变质、超高压变质峰期、柯石英榴辉岩相退变质、石英榴辉岩相退变质、麻粒岩相退变质、绿帘角闪岩相退变质、角闪岩相退变质和绿片岩相退变质共8个变质演化阶段;基于以往年代学研究,提出各阶段年代特征的限定。揭示苏鲁造山带实质上属于深俯冲所返杂岩带,这种杂岩带呈一种面型俯冲所返杂岩带的特征。
其他文献
The problem of Lake Eutrophication has aroused peoples concern in recur years.Eutrophication model is playing an important role in environmental management and control concepts and technology.This pap
In the research of analyzing the factors affected on water pollution,soil erosion and runoff have already been one of the important factors.In the catchment,the change of land use would not only alter
Based on the data of NOAA/AVHRR and the monthly monitoring data in 2002 -2007,the spatial and temporal variation of algal blooms in Lake Chaohu was analyzed.Meanwhile,the relationships between the chl
In this paper,the characteristics of soil and nitrogen losses at the first heavy rainfall event after were studied.The results indicated that soil and nitrogen concentration in runoff varied with diff
The fast urbanization progress in China in the late 20 years has brought more and more pressures on urban water system.Consequently,the conflict between rapid urban sprawl and the restoration of pollu
The integrated restoration project in Lichee Lake in Shenzhen,China,is taken as a case study.The restoration project included a filtration unit,a bio - gravel aeration unit,an ozonation unit,and an ar
Based on the grass type lakes wetland resources character,the economics theory and method is applied in the paper on the base of the investigation and experiment to analyses the asset value type of th
Lake Hunlun,which is the largest lake in North China,is located in the hinterland of the Hulunbeier grassland in Northeast China.And Lake Hulun which has great ecological benefit is the infrequent lar
Artificial floating islands ( AFIs),which was well know for its purification in lakes,ponds and reservoirs,was receiving a particular attention by the scientific and economic fields in recent years.In
Eutrophication of urban area water is a worldwide increasing problem in populated cities.In this study,bioremediation were applied to cleanse municipal pollution of nine different urbanlakes in Wuhan