一、引言该地区位于堪培拉西北50公里,堪培拉—马隆隆起的东侧。堪培拉—马隆隆起从维克托利亚州东部向北延伸直达新南威尔士州的威灵顿北部。在那芝格拉背斜的两侧形成一槽式构造。研究区正处于背斜的东侧,过去曾被称为泰玛士复向斜。这是一个长25公里宽8公里的向斜构造(图1、)。该区的褶皱和断裂呈北北西向,倾角一般为50°—60°。这一地区没有 I. INTRODUCTION The area is located 50 kilometers northwest of Canberra to the east of the Canberra-Malone uplift. Canberra - The Maronite extends north east of Victorian to Northern Wellington, New South Wales. A trough structure is formed on both sides of the Nazhira anticline. The study area is on the eastern side of the anticline, previously known as the Temasek syncline. This is a syncline structure 25 km long and 8 km wide (Figure 1). Folds and faults in this area are north-northwest, with dip generally ranging from 50 ° to 60 °. There is not this area