GSQ Drummond Galilee Qld 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 0.00096 degrees (approximately 103m) and shows potassium element concentration of the Drummond & Galilee Qld, (Geomap 2005) GDI 1997/1998 in units of percent (or %). The data used to produce this grid was acquired in 1997 by the QLD Government, and consisted of 198262 line-kilometres of data at 400m line spacing and 80m terrain clearance.

放射性测量法（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，来反映由钾（K）、铀（U）及钍（Th）的自然放射性衰变所产生的信号。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放射性衰变。经处理后得到的数据集可用于解译，以揭示地下地质构造。经处理的数据将由GA地球物理学家开展质量核验，以确保GA发布的最终数据符合使用要求。本放射性钾元素栅格数据的栅格单元尺寸为0.00096度（约103米），展示了澳大利亚昆士兰州（QLD）德拉蒙德（Drummond）与加里利（Galilee）地区的钾元素浓度，数据来源为2005年地质填图项目Geomap 2005及GDI 1997/1998，浓度单位为百分比（%）。本栅格数据所用的原始数据由昆士兰州政府于1997年采集，总测线长度达198262线公里，测线间距为400米，地形离地高度为80米。