GSNSW Exploration NSW Area O NW Eromanga potassium grid geodetic

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). 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 radiometric potassium grid has a cell size of 0.00077 degrees (approximately 80m) and shows potassium element concentration of the NSW DMR, Discovery 2000, AREA O, NW EROMANGA, NSW 2000 in units of percent (or %). The data used to produce this grid was acquired in 2000 by the NSW Government, and consisted of 54898 line-kilometres of data at a line spacing between 200m and 400m, and 60m terrain clearance.

放射性伽马能谱测量法（radiometric, or gamma-ray spectrometric method）通过探测地球表面附近的伽马射线自然变化，定量反映钾（K）、铀（U）和钍（Th）天然放射性衰变产生的辐射信号。采集所得数据需通过标准化流程处理，以确保记录的响应仅源于地下岩石的放射性贡献。所得数据集可通过解译分析，揭示地下地质构造特征。经处理的数据将由GA地球物理学家开展质量核查，确保GA发布的最终数据满足使用需求。
本次发布的放射性钾元素网格数据，格网单元尺寸为0.00077度（约80米），展示了新南威尔士州（NSW）DMR、Discovery 2000项目O区、西北埃罗曼加（NW EROMANGA）及2000年新南威尔士州勘探区域的钾元素浓度，单位为百分比（%）。用于生成该网格的数据由新南威尔士州政府于2000年采集，总测线长度达54898线公里，测线间距介于200米至400米之间，地形离地高度为60米。