Structural geology and tectonic significance of basin-fill sedimentary rocks, of ice-transported boulders therein and of volcanics recovered by ANDRILL cores in the McMurdo Sound region: Implications for the Cenozoic tectonic and clacial/climatic evolutio

南极钻探计划（ANDRILL）将在罗斯岛的一个平台上钻探一个地层岩心，该平台位于罗斯冰架的麦克默多冰架（MIS）部分。钻探定于2006/07年度进行。主要目标是一个1.2公里厚的上更新世冰川，陆源，火山和生物沉积物，沉积在一个弯曲的护城河凹陷形成的加载罗斯岛火山复合体的继承。钻探地点位于西南极裂谷系的维多利亚陆地盆地内。它的西部终端是代表的跨南极山脉前，一个不对称的裂谷肩，被许多横向和斜断层分割，并经历了几个阶段的隆起和剥蚀自白垩纪。主要目标是分析岩心中的天然裂缝，重建新近纪晚期罗斯海西部裂谷的运动学和动力学、相关断层历史和古应力状态。绝对的年龄限制，预计从定年火山灰层位序列内。此外，还将与岩石学、地质学和热年代学小组合作，对冰芯中冰搬运的基底巨砾至卵石大小的碎屑进行物源研究。这些研究将提供一种与内陆地区岩石类型相关联的工具，并将有助于确定过去冰流的潜在方向。

The ANtarctic DRILLing Program (ANDRILL) will drill a stratigraphic core from a platform located on Ross Island in the McMurdo Ice Shelf (MIS) sector of the Ross Ice Shelf. Drilling is scheduled for the 2006/07 season. Primary target is a 1.2 km thick succession of Plio-Pleistocene glacimarine, terrigenous, volcanic, and biogenic sediments that were deposited in a flexural moat depression formed by loading of the Ross Island volcanic complex. The drill site is located within the Victoria Land Basin of the West Antarctic Rift System. Its western termination is represented by the Transantarctic Mountains front, an asymmetric rift shoulder that is segmented by numerous transverse and oblique faults and has experienced several phases of uplift and denudation since the Cretaceous. The primary goal will be the analysis of natural fractures in the core and the reconstruction of kinematics and dynamics of rifting, the related faulting history, and palaeostress states in the western Ross Sea in Late Neogene-Recent times. Absolute age constraints are expected from dating tephra horizons within the sequence. Additionally, provenance studies of ice-transported basement boulder-to pebble-size clasts in the cores will be done in collaboration with petrology and geo- and thermochronology teams. These studies will provide a tool for correlation with rock types in the hinterland and will help to identify potential directions of ice flow in the past.