Seabed environments and shallow geology of the Vlaming sub-basin, Western Australia: Inorganic elements of seabed sediments.

Geoscience Australia undertook a marine survey of the Vlaming Sub-basin in March and April 2012 to provide seabed and shallow geological information to support an assessment of the CO2 storage potential of this sedimentary basin. The survey was undertaken under the Australian Government's National CO2 Infrastructure Plan (NCIP) to help identify sites suitable for the long term storage of CO2 within reasonable distances of major sources of CO2 emissions. The Vlaming Sub-basin is located offshore from Perth, Western Australia, and was previously identified by the Carbon Storage Taskforce (2009) as potentially highly suitable for CO2 storage. The principal aim of the Vlaming Sub-basin marine survey (GA survey number GA334) was to look for evidence of any past or current gas or fluid seepage at the seabed, and to determine whether these features are related to structures (e.g. faults) in the Vlaming Sub-basin that may extend up to the seabed. The survey also mapped seabed habitats and biota in the areas of interest to provide information on communities and biophysical features that may be associated with seepage. This research addresses key questions on the potential for containment of CO2 in the Early Cretaceous Gage Sandstone (the basin's proposed CO2 storage unit) and the regional integrity of the South Perth Shale (the seal unit that overlies the Gage Sandstone). This dataset comprises a suite of major and minor inorganic elements from seabed (0-2 cm) sediments.

澳大利亚地质调查局（Geoscience Australia）于2012年3月至4月对弗拉明次盆地（Vlaming Sub-basin）开展海洋调查，旨在获取海底与浅层地质信息，以支撑该沉积盆地的二氧化碳（CO2）封存潜力评估。本次调查依托澳大利亚政府《国家二氧化碳（CO2）基础设施计划》（National CO2 Infrastructure Plan, NCIP）实施，旨在识别距离主要二氧化碳（CO2）排放源合理范围内、适合长期封存二氧化碳（CO2）的场址。弗拉明次盆地位于澳大利亚西部珀斯近海，此前已被碳封存专责小组（Carbon Storage Taskforce, 2009）认定为极适合开展二氧化碳（CO2）封存的区域。本次弗拉明次盆地海洋调查（澳大利亚地质调查局编号GA334）的核心目标，是搜寻海底过去或当前存在气体或流体渗漏的证据，并探明这些渗漏特征是否与弗拉明次盆地内可延伸至海底的构造（如断层）相关。本次调查同时对目标区域的海底生境与生物群落开展测绘，以获取与渗漏相关的群落及生物物理特征的相关信息。本研究针对早白垩世盖奇砂岩（Early Cretaceous Gage Sandstone，该盆地拟用的二氧化碳（CO2）封存储层）中二氧化碳（CO2）封存的封闭性潜力，以及上覆于盖奇砂岩的南珀斯页岩（South Perth Shale，即盖层单元）的区域完整性这两个关键问题展开研究。本数据集包含海底（0-2 cm）沉积物中各类主要与微量无机元素的测定数据。