GSQ Hodgkinson Georgetown Block D 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 0.00096 degrees (approximately 104m) and shows uranium element concentration of the Hodgkinson-Georgetown Block D, QLD, 2000, Prospectivity Plus Init. 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 97568 line-kilometres of data at a line spacing between 200m and 400m, and 80m terrain clearance.

放射性方法，亦称伽马能谱法（gamma-ray spectrometric method），可检测地球表面附近的伽马射线自然变化，此类变化由钾（K）、铀（U）与钍（Th）的自然放射性衰变产生。所采集的数据将通过标准化流程进行处理，以确保所记录的响应仅由地下岩石引起。最终生成的数据集可通过解译，用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发布的最终数据满足实际应用需求。
本放射性铀元素格网数据的单元尺寸为0.00096度（约合104米），展示了2000年昆士兰州（QLD）霍奇金森-乔治敦区块D（Hodgkinson-Georgetown Block D）的铀元素浓度，数据由Prospectivity Plus Init.提供，单位为百万分率（parts per million，即ppm）。用于生成该格网的原始数据由昆士兰州政府于2000年采集，总测线长度达97568测线公里，测线间距介于200米至400米之间，地形离地高度为80米。