GSQ Mt Isa Southwest percent 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 88m) and shows potassium element concentration of the Mount Isa South West, Qld, 2006 in units of percent (or %). The data used to produce this grid was acquired in 2006 by the QLD Government, and consisted of 139836 line-kilometres of data at 400m line spacing and 80m terrain clearance.

辐射测量法，又称伽马射线能谱法，通过探测地球表面附近的伽马射线自然变化，表征钾（K）、铀（U）与钍（Th）的天然放射性衰变所产生的辐射信号。所采集的数据将通过标准流程进行处理，以确保记录的响应仅源于地下岩石的辐射。经处理后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要求。本次发布的辐射测量钾元素栅格数据，其栅格单元尺寸为0.00083度（约88米），展示了2006年昆士兰州伊萨山（Mount Isa）西南部的钾元素浓度分布，单位为百分比（%）。用于生成该栅格的数据由昆士兰州政府于2006年采集，总测线长度达139836线公里，测线间距为400米，地形离地高度为80米。