A Comparative Rockmagnetic and Calcite Strain Study of Deformation, Diagenesis, and Remagnetization of Paleozoic Cratonic Carbonates

PI将通过研究北美东部一些地区古生代碳酸盐岩的岩石磁性和变形微结构，来研究晚古生代再磁化变形与成岩作用的关系。主要目标是：1)更全面地表征复磁碳酸盐地层中的磁性矿物学和剩磁载体；2)研究成岩伊利石与成岩/自生磁铁矿含量之间可能的定量关系；3)比较磁性和方解石孪生应变组构的方向和大小；4)评价晚古生代流体迁移、方解石孪生、磁铁矿自生作用与阿巴拉契亚-瓦奇塔褶皱冲断带演化的关系。

The PIs will investigate the relationships between Late Paleozoic remagnetization deformation, and diagenesis, by studying the rock magnetic properties and deformation microstructures in Paleozoic carbonates from a number of localities in eastern North America. The principal goals will be to: 1) more completely characterize the magnetic mineralogy and remanence carriers in remagnetized carbonate strata; 2) investigate possible quantitative correlations between diagenetic illite and diagenetic/authigenic magnetite content; 3) compare the orientations and magnitudes of magnetic and calcite twinning strain fabrics; and 4) evaluate the connections between Late Paleozoic fluid migration, calcite twinning, and magnetite authigenesis, and the evolution of the Appalachian-Ouachita fold- and-thrust belt.