Collaborative Research: Lithospheric Structure and Evolution of the Rocky Mountains: Phase 2

[20208215]鲍林该奖为旨在了解南落基山脉岩石圈构造演化的CD-ROM（落基山脉大陆动力学）合作研究提供了持续的资金支持。从怀俄明州到新墨西哥州的样带提供了一个评估假设的机会，该假设认为西南岩石圈结构反映了早期元古代大陆组合期间形成的结构和年轻的克拉通内构造运动期间发生的变化的可分解混合物，这些变化本身受元古代成分结构的影响。第一阶段（1997-2001）成功地验证了这一假设。PIs成像了夏延带和耶梅斯地貌；两者都被解释为古元古代的古俯冲带，对年轻的克拉通内构造作用也表现出长期和强烈的影响。两者都与深部化学岩石圈的横向变化有关，从而将地幔省与地壳省联系起来，证明了地幔转变的古老性。在这笔“过桥基金”资助下，首席研究员将每年举办一次研讨会，完成第一阶段数据集的分析，提高发表论文的效率，并为第二阶段的唯读光碟计划做准备。***

0208215BowringThis award provides continued funding for the CD-ROM (Continental Dynamics of the Rocky Mountains) collaborative investigation which is designed to understand the tectonic evolution of the lithosphere of the southern Rocky Mountains. A transect from Wyoming to New Mexico is providing an opportunity to evaluate the hypothesis that lithospheric architecture of the Southwest reflects a resolvable mixture of structures that formed during early Proterozoic assembly of the continent and modifications that took place during younger intracratonic tectonism that were themselves influenced by the Proterozoic compositional structure. Phase 1 (1997-2001) was successful in substantially verifying this hypothesis. The PIs imaged the Cheyenne Belt and Jemez lineament; both are interpreted to be Paleoproterozoic paleosubduction zones that also show long-lived and strong influence on younger intracratonic tectonism. Both are also associated with lateral changes in deep chemical lithosphere, such that the mantle provinces can be linked to crustal provinces, demonstrating the antiquity of the mantle transitions. With this "bridge funding" award, the Principal Investigators will conduct an annual workshop, complete the analysis of data sets generated in Phase 1, increase productivity in terms of published papers, and prepare for Phase 2 of the CD-ROM project.***