GSNSW Exploration NSW Area X Inverell 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 50m) and shows uranium element concentration of the NSW DMR, Discovery 2000, Area X, Inverell, NSW in units of parts per million (or ppm). The data used to produce this grid was acquired in 2002 by the NSW Government, and consisted of 29054 line-kilometres of data at 250m line spacing and 60m terrain clearance.

伽马射线能谱法（gamma-ray spectrometric method，亦称放射性测量法（radiometric method））通过探测地球表面附近的伽马射线自然变化，来反映钾（K）、铀（U）和钍（Th）的自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化流程处理，以确保记录的响应仅源自地下岩石的辐射。经处理得到的数据集可通过解译，揭示地下地质构造特征。经处理的数据将由GA地球物理学家开展质量校验，以确保GA发布的最终数据符合使用要求。
该放射性铀元素网格（radiometric uranium grid）的像元大小为0.00048度（约合50米），展示了新南威尔士州（NSW）因弗雷尔（Inverell）地区X区块、Discovery 2000项目及NSW DMR辖区内的铀元素浓度，单位为百万分比（parts per million，简称ppm）。用于生成该网格的数据由新南威尔士州政府于2002年采集，涵盖总测线长度达29054公里、测线间距250米、地形离地高度60米的测量数据。