ABSTRACT

In this paper, we supply a geological map of the area between 76°–76°30′S and 159°–163°E, that was the only missing portion to complete an entire coverage of Victoria Land, filling the gap between the GIGAMAP program (to the north) and the maps by the New Zealand Antarctic program (to the south). The mapped area encompasses an early Paleozoic basement, and a flat-lying cover of sedimentary and igneous rocks, Permo-Triassic to Jurassic in age. The basement consists of large bodies of the Granite Harbour Igneous Complex, a granitic complex linked to the Ross Orogeny. After the early Paleozoic Ross Orogeny, the area was uplifted and eroded, and the sandstones of the Beacon Supergroup were deposited on the resulting erosion surface. The Beacon Supergroup sandstones were in turn covered and in most cases incorporated into the volcanic and sub-volcanic rocks of the Jurassic Ferrar Group.

摘要

在本文中，我们提供了76°–76°30'S和159°–163°E之间的区域的地质图，这是完整覆盖维多利亚州土地的唯一缺失部分，填补了GIGAMAP之间的空白程序（向北）和新西兰南极程序的地图（向南）。所绘制的区域包括早期的古生代基底，以及平坦的沉积和火成岩覆盖层，其年龄为Permo-Triassic到侏罗纪。地下室由花岗岩港火成岩体的大型主体组成，该花岗岩体与罗斯造山运动有关。在早古生代罗斯造山运动之后，该地区隆起并受到侵蚀，信标超群的砂岩沉积在产生的侵蚀面上。