Structural and Tectonic Evolution of the Tasman Orogenic Zone in Northern Tasmania

塔斯马尼亚北部塔斯曼造山带的结构和构造演化

• 批准号: 8820084
• 负责人: Nicholas Woodward
• 金额: --
• 依托单位: University of Tennessee Chattanooga
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-09-01 至 1989-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8820084&HistoricalAwards=false
• 关键词: Structural; Tectonic; Evolution; Tasman; Orogenic

The Tasman orogenic belt of eastern Australia includes the Lachlan fold belt on the west and the New England fold belt on the east. There are a number of orogenic models for these areas including thick-skinned tectonics involving basement rocks and thin-skinned tectonics involving thrust belt telescoping. The north coast of Tasmania exposes a cross-section of the Tasman orogenic belt, including basement exposures and thus provides an ideal location to test the various hypotheses. This project will study the structural geometry and rock fabrics along a 110 km geotraverse on the north coast of Tasmania in conjunction with investigators at Monash University, Victoria, Australia. Results will help constrain mechanical modelling of terrane accretion processes for Tasmania and Victoria. Results are also important in placing Tasmania in plate tectonic reconstructions of the Australia-Antarctic continental breakup.

澳大利亚东部的塔斯曼造山带包括西部的拉克伦褶皱带和东部的新英格兰褶皱带。这些地区有许多造山模式，包括涉及基底岩石的厚皮构造和涉及逆冲带伸缩的薄皮构造。塔斯马尼亚北部海岸暴露了塔斯曼造山带的一个横截面，包括基底暴露，因此提供了一个理想的位置来测试各种假设。该项目将与澳大利亚维多利亚的莫纳什大学的研究人员合作，研究塔斯马尼亚北部海岸沿着110公里地质导线的结构几何和岩石组构。结果将有助于约束塔斯马尼亚和维多利亚的吸积过程的机械建模。结果也是重要的，把塔斯马尼亚岛在板块构造重建的澳大利亚-南极大陆分裂。