Macdonald (Jolly Peaks) 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 0.00083 degrees (approximately 89m) and shows potassium element concentration of the Macdonald (Jolly Peaks), WA, 1993 in units of percent (or %). The data used to produce this grid was acquired in 1993 by the WA Government, and consisted of 76950 line-kilometres of data at 400m line spacing and 60m terrain clearance.

放射测量法（radiometric），亦称伽马射线能谱法，通过探测地球表面附近的伽马射线自然变化，该变化源自钾（K）、铀（U）以及钍（Th）的自然放射性衰变。所采集的数据将通过标准流程进行处理，以确保记录到的伽马射线响应仅源于地下岩石。经处理得到的数据集可通过解译，揭示地下地质构造。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。本放射测量钾元素网格的单元格尺寸为0.00083度（约89米），展示了1993年西澳大利亚州（WA）麦克唐纳（乔利峰）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西澳大利亚州政府于1993年采集，总测线数据覆盖长度达76950测线公里，测线间距为400米，地形离地高度为60米。