L146 Eastern Lachlan seismic survey, NSW, 1997 Stacked seismic data and images for lines 97AGSEL1, 97AGSEL2, and 97AGSEL3

The Australian Geodynamics Cooperative Research Centre (AGCRC), through Geoscience Australia conducted a seismic reflection survey in various localities in the eastern Lachlan Orogen of NSW, from October to November 1997. The objectives of the project were to obtain a better understanding of sub-surface geology at a regional and local scale and, in particular, provide more information on: 1. basement control on basin development 2. regional crustal thickness and major features within the basement 3. stratigraphic architecture of the basins 4. structural architecture of the basins 5. the location of fluid flow pathways The seismic survey acquired 105 km of 10 fold CMP (common midpoint) deep (20 second TWT) reflection seismic data along three traverses over a 6 week acquisition period. In addition to the seismic data, gravity observations were made at 300 m intervals along the lines. Drill cutting samples were also collected for analysis.

澳大利亚地球动力学合作研究中心（Australian Geodynamics Cooperative Research Centre, AGCRC）委托澳大利亚地球科学局（Geoscience Australia），于1997年10月至11月在新南威尔士州拉克兰造山带东部的多个区域开展了地震反射勘探作业。
本项目的目标是从区域及局部尺度深化对地下地质的认知，具体旨在获取更多关于以下内容的信息：1. 盆地发育的基底控制作用；2. 区域地壳厚度及基底内部的主要构造特征；3. 盆地的地层结构构型；4. 盆地的构造结构特征；5. 流体运移通道的分布位置。
本次数据采集历时6周，沿三条测线采集了总长105千米的10次覆盖共反射点（common midpoint, CMP）深层反射地震数据，探测深度可达20秒双向传播时间（two-way traveltime, TWT）。
除地震数据外，勘探团队还沿测线以300米的间隔开展了重力观测，并采集了钻井岩屑样品以供分析。