Proterozoic Assembly of the Northern Colorado Front Range

小行星9804712 美国西部元古宙陆壳的组装是弧物质自北向南连续增生的过程，早期的碰撞以科罗拉多省和怀俄明州省为标志，其逆冲推覆作用为1.4Ga。 然而，新的证据，甚至更早的多变质作用和走滑平移提出了显着的并发症，这些增生事件的可能性。 该项目将通过对北方前缘山脉的综合运动学、岩石学、地质年代学和同位素研究来探讨这些问题。 结果有望澄清早期增生构造之间的科罗拉多和怀俄明州省。

9804712 Selverstone The assembly of continental crust of the American west during the proterozoic involves successive accretion of arc material from north to south, with early collision between the Colorado province and the Wyoming province, as marked by 1.4 Ga thrusting. However, new evidence for even earlier polymetamorphism and strike slip translation has raised the possibility of significant complications to these accretion events. This project will pursue these issues with an integrated kinematic, petrologic, geochronologic and isotopic study of the northern Front Range. Results are expected to clarify early accretionary tectonics between the Colorado and Wyoming provinces.