Workshop on the Assembly of Gondwana

冈瓦纳组装研讨会

• 批准号: 9305276
• 负责人: John Rogers
• 金额: $ 2万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-04-01 至 1994-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9305276&HistoricalAwards=false
• 关键词: Workshop; Assembly; Gondwana

The concept of a supercontinent, named "Gondwana, "has stirred the imaginations and stimulated the research of geoscientists since the first suggestion of the possibility of continental drift. The Mesozoic-Cenozoic fragmentation of Gondwana is now reasonably well understood, but the original of the supercontinent is still largely a matter of speculation. Because Gondwana constituted approximately one half of the world's continental crust, the history of assembly of Gondwana is a large part of the history of assembly of "Pangea" near the end of the Paleozoic. Furthermore, the age and sequence of accretion of fragments to Gondwana place important constraints on efforts to decipher the configuration and history of fragmentation of a middle-to-late-Proterozoic supercontinent ("Rodinia"). The principal investigators wish to study the assembly of Gondwana by organizing coordinated research projects that investigate geographic areas and use techniques that are regarded as particularly useful. As a start, they will hold a workshop to identify problems that are both important and require a coordinated approach. They have assembled an international group of scientists with expertise in various geographic areas and geoscience disciplines and will bring them together in the spring of 1993. The primary purpose of this workshop will be to prepare a proposal for further coordinated research projects.

自从第一次提出大陆漂移的可能性以来，被命名为“冈瓦纳”的超大陆的概念就激发了人们的想象力，刺激了地球科学家的研究。冈瓦纳大陆中生代-新生代的分裂现在已经相当清楚了，但超大陆的起源在很大程度上仍然是一个猜测问题。由于冈瓦纳板块约占世界大陆地壳的一半，冈瓦纳板块的组装史是古生代末期“盘古大陆”组装史的很大一部分。此外，冈瓦纳大陆碎片增生的年龄和顺序对破译中晚元古代超大陆（“罗迪尼亚”）的构造和破碎历史的努力具有重要的限制。主要研究人员希望通过组织调查地理区域和使用被认为特别有用的技术的协调研究项目来研究冈瓦纳的集合。作为开始，他们将举行一个讲习班，以确定既重要又需要协调一致的方法的问题。他们召集了一个具有不同地理领域和地球科学学科专门知识的国际科学家小组，并将在1993年春季把他们聚集在一起。这次讲习班的主要目的是为进一步协调的研究项目编写一份建议。