GSNSW Exploration NSW Area E North Parkes 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 0.00121 degrees (approximately 124m) and shows uranium element concentration of the NSW DMR, Discovery 2000, 1994-95, AREA E, Northern Parkes in units of parts per million (or ppm). The data used to produce this grid was acquired in 1995 by the NSW Government, and consisted of 122000 line-kilometres of data at 250m line spacing and 60m terrain clearance.

辐射测量法（radiometric method），又称伽马能谱法（gamma-ray spectrometric method），通过探测地球表面附近的伽马射线自然变化，来表征由钾（K）、铀（U）和钍（Th）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。本次发布的辐射测量铀元素格网数据的格网单元尺寸为0.00121度（约合124米），展示的是新南威尔士州矿产资源局（NSW DMR）1994-1995年"Discovery 2000"项目E区北帕克斯区域的铀元素浓度，单位为百万分比（ppm）。用于生成该格网的数据由新南威尔士州政府于1995年采集，总测线长度达122000千米，测线间距为250米，地形离地高度为60米。