准噶尔盆地西缘二叠-三叠系扇控成岩储集相成因机理   总被引：24，自引：5，他引：19  

邹才能  侯连华  匡立春  况军 《地质科学》2007,42(3):587-601

对准噶尔盆地西缘前陆冲断背景下形成的扇控沉积储层特征的研究,发现沉积、构造、流体和热演化4种机制是主要的成岩成孔作用,各自的成因机理不同,据此提出了4种成岩储集相成因机制和相应的发育模式。指出二叠-三叠系储层孔隙空间主要以溶孔为主,发育粘土收缩孔缝、粒内缝、颗粒溶蚀、沸石溶蚀、构造缝及气孔等多种成岩储集相。不同成岩成孔机制相互配合是形成该区有利成岩储集相的条件,预测断裂发育区油气勘探有利埋深度可达7000m,非断裂发育区油气勘探有利埋藏深度可达4500m,改变了原来对该地区有效储集层埋藏下限深度为3500m的观点。这对我国类似地区的有利成岩储集相预测具有理论参考价值,对油气勘探具有指导作用。  相似文献   

广东惠州燕山期以来地质构造演化:对华南构造的新启示          下载免费PDF全文

张敏  旷健  肖志才  王帅  祁士华  陈孝雄  李立峰  唐灵 《地球科学》2021,46(1):242-258

为揭示广东惠州燕山期以来的地质构造演化,以惠州石坝-黄沙洞地区为例,并综合基础地质调查、大地电磁学、岩石地球化学、年代学等方法来分析研究.大地电磁结果显示研究区深部存在连为一体厚超5 km的燕山期花岗岩体岩床,并被新生代断裂切割;丹霞组底砾岩矿物磨圆较差显示出近源沉积特征;谐和年龄及年龄谱图揭示底砾岩年龄约160 Ma...  相似文献   

Research progress and prospects of digital restructuring of global-local interactions北大核心CSCD     

Kuang A.  Wang M.  Zhang Y. 《地理科学进展》2023,(2):380-391

Global-local interaction is an important research topic in economic geography. In recent years, the rapid development of digitalization in various countries and regions has profoundly affected the global production and trade networks. However, there is a lack of systematic theoretical discussion on digitalization and global-local interaction studies. The objective of this study is to conceptually rethink the role of digitalization in reshaping global-local interactions from a dynamic and relational perspective. To do this, the study first systematically reviewed the digital turn in economic geography and discussed the rethinking of digitalization. It is found that the understanding of digitalization is gradually moving beyond the limits of isolated, static, and passive technocentric approaches and towards a more dynamic, relational, and open perspective. Second, the study combined the "digital turn" with the "relational turn" in relational economic geography, which constructs theoretical bridges between digitalization and global-local studies. Third, this study provided a basic understanding for sorting out the evolution of the research frameworks, that is, from the global value chain (GVC) to the global production network (GPN) and then to the digital ecosystem (DE). We argued that digitalization has been deeply involved in shaping the global economic landscape, restructuring global-local production relations, and reconstructing regional development. Based on this recognition, we discussed the primary performance of digitalization on the restructuring of global-local interaction from three aspects: enterprise relationship, spatial effect and interaction mechanism. Finally, grounded in the practice of China's urban and regional digital economy development, the possible theoretical innovations and prospects for future research on digitalization and global-local interaction in the Chinese context were proposed. The study pointed out that we can integrate the regional practices of China's digital development with more in-depth research from the perspectives of the platform ecosystems, spatial effects, location analysis, local development models, and so on in future research. © 2023, Editorial office of PROGRESS IN GEOGRAPHY. All rights reserved.  相似文献   

1986—2021年国家自然科学基金资助大气科学研究35年     

匡钰  王卓妮 《气象科学进展》2022,(1)

中国基础科学全面发展的一个重要标志,是1986年国家自然科学基金委员会的建立。从该年开始,基金委地学部开始资助大气科学基础研究项目。截至2021年,35年来,基金委以研究项目的遴选、资助和评估等过程为推动,不仅促成了我国大气科学研究的持续进步,更形成了一支核心研究机构和队伍。自然科学基金大气科学类项目立项呈现持续增加态势立项数量的增加出现两个快速增加的台阶:一是2000年开始。  相似文献