GSNSW Exploration NSW Area M Kayrunnera 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 0.00048 degrees (approximately 50m) and shows potassium element concentration of the NSW DMR, Area M, Kayrunnera(Milparinka, Cobham Lk, White Cl.), NSW, 1999 in units of percent (or %). The data used to produce this grid was acquired in 1999 by the NSW Government, and consisted of 55448 line-kilometres of data at 250m line spacing and 60m terrain clearance.

放射性测量法，亦称伽马射线能谱法（gamma-ray spectrometric method），通过探测地球地表附近的伽马射线自然变化，该变化源于钾（K）、铀（U）和钍（Th）的天然放射性衰变。
所采集的数据将通过标准流程处理，以确保记录到的响应仅由地下岩石产生。经处理得到的数据集可通过解译，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，以确保GA发布的最终数据符合使用需求。

本放射性钾元素栅格数据的栅格单元尺寸为0.00048度（约合50米），展示了1999年新南威尔士州矿产资源部（NSW DMR）M区域凯鲁纳拉（米尔帕林卡、科巴姆湖、怀特克利夫斯一带）的钾元素浓度分布，单位为百分比（%）。

用于生成该栅格的数据由新南威尔士州政府于1999年采集，总测线长度达55448线公里，测线间距为250米，飞行离地高度为60米。