COLLABORATIVE RESEARCH: Remagnetization and Orogenic Fluids: Testing the Hypothesis in the Central Appalachians

合作研究：重磁化和造山流体：检验阿巴拉契亚中部的假设

• 批准号: 9814913
• 负责人: R. Douglas Elmore
• 金额: $ 9.86万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-01-01 至 2001-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9814913&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Remagnetization; Orogenic; Fluids

9814913Elmore In a number of orogens paleomagnetic orientations acquired during deposition have been pervasively remagneticized and during tectonic deformation presumably by widespread chemical remganetization as orogenic fluids migrated through the flanking sedimentary rocks. The actual tie between postulated orogenic fluid passage through rocks and change in the magnetic properties of the rock has not yet been established. This project is a geochemical, petrographic and paleomagnetic test of the hypothesis that such migrating fluids caused the observed magnetic overprints in the central Appalachians. Results will place the interpretation of orogenic fluid remagnetization on a firmer theoretical basis and will be useful in reconstructing fluid flows during late Paleozoic deformation in the Appalachians.

在许多造山带中，在沉积过程中获得的古地磁方向已经被普遍地重新磁化，在构造变形期间，可能是由于造山流体在侧翼沉积岩中的迁移而被广泛的化学重新磁化作用。假想的造山流体通过岩石的通道与岩石磁性变化之间的实际联系尚未确定。这个项目是对这种迁移的流体造成了阿巴拉契亚山脉中部观测到的磁性叠加的假说进行的一项地球化学、岩石学和古地磁测试。这些结果将使造山流体的再磁化解释有更坚实的理论基础，并将有助于重建阿巴拉契亚地区晚古生代变形期间的流体流动。