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

Terra Nova Bay地区形成了罗斯海西部的横贯北极山脉()的一部分，以极端的风景对比为特征。在那里，高阿尔卑斯山海岸地貌在靠近高海拔内陆高原和深的冰川槽附近发展起来。在BGR GANOVEX X(2009/10)探险期间，该地区的构造地质、地貌观测和基底和盖层岩石取样将为随后的热年代学技术(裂变径迹和(UTH-Sm)/He分析)的应用提供地面事实。基于这些数据和热史模拟，陆新湾地区的区域抬升和剥蚀历史将受到以下四个主要问题的制约：(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)跨越太平洋被动边缘和西南极裂谷肩/两个悬崖的历时裂谷过程；(3)始新世/渐新世以来地区最终剥蚀的时间和数量；(4)气候、构造和岩性相互作用导致的陆新湾地区景观对比发育的量化和解释。这一方面还包括对东南极克拉通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.