Major Lithotectonic Boundaries and Acadian Versus Late Paleozoic Deformation and Metamorphism, Central Massachusetts

新英格兰的西印度构造带记录了几个 从奥陶纪到石炭纪的挤压脉冲 在三叠纪伸展开始之前 的演变 布朗森山复向斜和梅里马克复向斜 马萨诸塞州中部已经收到了很多工作，并已 认识古生代挤压造山作用的基石 来自新英格兰。 单晶年龄的最新进展 测定和岩相微束技术提供了 这是一个严格检验先前结论的机会， 已经提供了大量修改的建议， 这一经典区域的构造历史 这个项目将联合收割机 先前的大量工作以及新时代的确定结果 和定量岩石学来解决几个关键问题， 将结果整合到一个新的综合进化中， 北方阿巴拉契亚山脉。

The Acadian tectonic belt of New England records several pulses of compression from the Ordovician to the carboniferous before the onset of extension in the Triassic. The evolution of the Bronson Hill anticlinorium and the Merrimack synclinorium of central Massachusetts has received much work and has been the cornerstone of understanding the paleozoic compressional orogenies of New England. Recent advances in single-crystal age determinations and petrographic microbeam techniques have provided an opportunity to rigorously test previous conclusions and have already provided suggestions of considerable revisions to the tectonic history of this classic area. This project will combine the wealth of prior work with the results of new age determinations and quantitative petrology to address several key problems and to integrate the results into a new synthesis of the evolution of the northern Appalachians.