Silvergrass Plains Hamersley Iron Province Gravity (P197731), gravity point data

Gravity data measures small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Silvergrass Plains Hamersley Iron Province Gravity (P197731) contains a total of 1763 point data values acquired at a spacing between 100 and 1200 metres. The data is located in WA and were acquired in 1977, under project No. 197731 for Hamersley Exploration Pty Ltd.

重力数据用于测量因地球表层下方岩石密度变化引发的微小重力变化。采集所得数据将通过标准方法进行处理，确保记录的重力响应仅由地下岩石引起。经处理得到的数据集可通过地质解译，用以揭示地下地质构造。GA地球物理学家会对处理后的数据开展质量检查，以确保GA发布的最终数据符合使用要求。本次的银草平原哈默斯利铁矿省重力数据集（P197731）共包含1763个测点数据，测点间距介于100米至1200米之间。该数据集的采集区域为西澳大利亚州（WA），相关数据于1977年为哈默斯利勘探私人有限公司（Hamersley Exploration Pty Ltd）实施的编号为197731的项目采集所得。