Lithospheric Tectonics of a Transpressional Plate Boundary Fiordland, New Zealand

小行星9725187 压扭板块边界是地壳变形的复杂地带。 许多压扭边界显示出应变分裂为同时发生的会聚和相对纯的走滑变形。 虽然这种应变分配在某些地区的地壳中有很好的记录，但下地壳和地幔变形的方式并不为人所知。 宾夕法尼亚州立大学的弗隆和新西兰IGNS/奥塔哥的安德森的这项合作研究将利用新西兰西南部的峡湾地区作为测试区来解决这个一般性问题。 具体的问题是：1）太平洋和澳大利亚岩石圈如何适应缩短，地壳和地幔在何种程度上是机械耦合的？ 这一办法将是双重的。 弗隆将对该地区的热、流变和变形演化进行详细的建模，安德森将对该地区进行地震学分析。 分析的结果将揭示地壳和地幔在这个地方的机械联系的程度，但它们也将提供一个关键的背景下，推广到其他地区。

9725187 Furlong Transpressional plate boundaries are zones of complicated crustal deformation. Many transpressional boundaries show partitioning of strain into concurrent convergent and relatively pure strike-slip deformation. While this strain partitioning is well documented in the crust of some areas, the way in which the lower crust and mantle deform is not well known. This collaborative study by Furlong at Penn State and Anderson at IGNS/Otago, New Zealand, will address this general question using the Fiordland area of SW New Zealand as a testing area. The specific problems that will be posed arc 1) how do the Pacific and Australian lithospheric accommodate shortening, and to what extent are the crust and mantel mechanically coupled? The approach will be two-fold. Furlong will undertake detailed modeling of the thermal, rheological, and deformational evolution of the area, and Anderson will undertake a seismological analysis of the area. The result of the analysis will reveal to what extent the crust and mantles are mechanically linked at this local, but they will also provide a critical context in which to generalize to other areas.