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: 9814923
• 负责人: Mark Evans
• 金额: $ 13.06万
• 依托单位: University of Pittsburgh
• 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=9814923&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Remagnetization; Orogenic; Fluids

9814923Evans In a number of orogens paleomagentic 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.

9814923埃文斯在许多造山带中，沉积过程中获得的古地磁方位普遍被重新磁化，在构造变形过程中，可能是由于造山流体通过侧翼沉积岩迁移而发生的广泛的化学镁橄榄石化作用。 假设的造山流体通过岩石与岩石磁性变化之间的实际联系尚未建立。 该项目是一个地球化学，岩相学和古地磁测试的假设，这种迁移流体造成了在阿巴拉契亚山脉中部观察到的磁性叠印。 研究结果将把解释造山流体重磁化的理论基础，并将有助于重建流体流动在阿巴拉契亚山脉晚古生代变形。