Interpretation of Seismic Data, Capel and Faust Basins, Australia's Remote Offshore Eastern Frontier

The Capel and Faust basins are located in a remote part of deepwater offshore eastern Australia. They are largely Cretaceous rifts formed within a 1600 km long ribbon of continental crust (the Lord Howe Rise) that became detached from Australia during the fragmentation of the eastern Gondwana plate margin and the opening of the Tasman Basin. As part of Geoscience Australia (GA)'s ongoing work to identify and evaluate the resource potential of Australia's offshore frontier basins, approximately 6 000 km of industry-standard, 106-fold 2D seismic data was acquired over the Capel and Faust basins during late 2006 and early 2007. These data supplemented earlier, sparse regional seismic data and were complemented by the acquisition of approximately 24 000 km2 of multibeam bathymetry and 11 000 line kilometres of shipboard gravity and magnetic data by GA in late 2007. This record details the interpretation of the seismic data and is intended to complement the release of a digital version of the interpretations in workstation formats (GeoFrame, Kingdom). Scientific conclusions drawn from the seismic interpretations and, very importantly, from an integration of the seismic, potential field and other data sets are beyond the scope of this record and are published in other GA Records, scientific papers and conference proceedings volumes.

开普盆地与福斯特盆地（Capel and Faust basins）坐落于澳大利亚东部远海深水区域。二者主体为白垩纪裂谷构造，形成于一条长1600千米的大陆地壳带——豪勋爵海隆（Lord Howe Rise）之上；该地壳带在东冈瓦纳板块边缘裂解以及塔斯曼盆地（Tasman Basin）形成过程中与澳大利亚大陆分离。作为澳大利亚地质调查局（Geoscience Australia, GA）识别与评估澳大利亚远海边缘盆地资源潜力的持续性工作内容之一，研究团队于2006年末至2007年初在开普盆地与福斯特盆地区域采集了总长约6000千米的行业标准106次覆盖二维地震数据。该批数据补充了此前较为稀疏的区域地震数据集；澳大利亚地质调查局还于2007年末采集了约24000平方千米的多波束测深（multibeam bathymetry）数据以及总长11000测线千米的船载重力与磁力数据，进一步完善了区域地球物理勘探数据体系。本数据集详细记录了上述地震数据的解译成果，旨在配套发布基于工作站格式（GeoFrame、Kingdom）的解译数据数字版本。基于地震解译成果，以及尤为关键的地震数据、位场数据与其他数据集的综合分析所得出的科学结论，不属于本记录的范畴，相关成果已发表于澳大利亚地质调查局其他专项报告、学术期刊及会议论文集中。