The influence of climate and tectonics on uplift and denudation of the Terra Nova Bay Region (Transantarktisches Gebirge)

特拉诺瓦湾地区形成了罗斯海西部的跨南极山脉（TAM）的一部分，其特点是极端的景观对比。在那里，一个高的阿尔卑斯山海岸形态发展在附近的高海拔的内陆高原和深，结构定义的冰川槽。联邦地球科学及自然资源研究所GANOVEX X（2009/10年）考察期间对该地区基底和盖层岩石进行的结构地质学、地貌学观测和取样，将为随后应用热年代学技术（裂变径迹和（UTh-Sm）/He分析）提供基本事实。根据这些数据和热历史模型，Terra Nova Bay地区的区域隆起和剥蚀历史将受到以下四个主要主题的制约：（1）澳大利亚东南部和罗斯海西部陆壳上白垩纪“维多利亚盆地”的演化;（2）太平洋被动陆缘和西南极裂谷肩（TAM）两个陡崖的穿时裂谷作用;（3）始新世/渐新世以来TAM最终剥蚀的时间和数量;（4）定量和解释Terra Nova海湾地区内气候、构造和岩性相互作用导致的景观对比的发展。这一方面也包括对东南极洲边缘的长期气候演变的影响。

The Terra Nova Bay region forms a segment of the Transantarctic Mountains (TAM) in the western Ross Sea that is characterized by extreme landscape contrasts. There, a high Alpine coastal morphology developed in immediate vicinity to high-elevated inland plateaus and deep, structurally defined glacial troughs. Structural geology, geomorphological observation and sampling of basement and cover rocks in this region during the expedition BGR GANOVEX X (2009/10) will provide the ground truth for the subsequent application of thermochronological techniques (fission track and (UTh- Sm)/He analyses). Based on these data and thermal history modelling, the regional uplift and denudation history of the Terra Nova Bay region will be constrained with the four main topics: (1) the evolution of a Cretaceous “Victoria Basin” on the continental crust of SE Australia and the western Ross Sea, (2) the diachronous rifting processes across the two escarpments of Pacific passive margin and West Antarctic rift shoulder/ TAM, (3) timing and amount of the final denudation of the TAM since the Eocene/ Oligocene, and (4) quantification and explanation of development of landscape contrasts within the Terra Nova Bay region resulting from the interplay between climate, tectonics and lithology. This aspect also comprises implications for the long-term climate evolution on the margin of the East Antarctic Craton.