GSQ Isa Georgetown Block B Qld ppm uranium 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 uranium grid has a cell size of 0.00048 degrees (approximately 52m) and shows uranium element concentration of the Isa-Georgetown Block B, QLD, 2000, Prospectivity Plus Initiative in units of parts per million (or ppm). The data used to produce this grid was acquired in 2000 by the QLD Government, and consisted of 42035 line-kilometres of data at a line spacing between 200m and 400m, and 80m terrain clearance.放射测量法（radiometric method，又称伽马射线能谱法（gamma-ray spectrometric method））通过检测地球表面附近的伽马射线自然变化，获取由钾（K）、铀（U）与钍（Th）的天然放射性衰变所产生的辐射信号。采集所得数据将通过标准流程进行处理，以确保记录的响应仅由地下岩层产生。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验，以确保GA发布的最终数据符合使用要求。 本次放射测量铀元素格网的格网单元尺寸为0.00048度（约合52米），展示了2000年远景潜力增强计划（Prospectivity Plus Initiative）覆盖的昆士兰州（QLD）伊萨-乔治敦区块B的铀元素浓度分布，数据单位为百万分率（ppm）。用于制作该格网的数据由昆士兰州政府（QLD Government）于2000年采集，涵盖42035线公里的测线数据，测线间距介于200米至400米之间，地形离地高度为80米。