Airborne geophysical survey: Charley River 1° x 3° Quadrangle

Aeromagnetic and aeroradiometric data were collected along flight lines by
instruments in an aircraft that recorded magnetic-field and radiometric
values and locations. The magnetic data set presents latitude, longitude,
altitude, and magnetic-field values. Geologic symbols or codes are also
included. The geologic symbols were picked from surficial geologic maps.
The radiometric data set presents latitude, longitude, altitude, geologic
symbols or codes, apparent Uranium (Bismuth 214), Thorium (Thallium 208),
and Potassium (K 40), the element ratios, and ancillary information.

本数据集包含沿飞行航线采集的航空磁测（Aeromagnetic）与航空放射测量（Aeroradiometric）数据，由搭载于航空器的测量仪器同步记录磁场强度、放射测量数值及采样位置信息。
航空磁测数据集包含纬度、经度、海拔高度及磁场强度数值，同时附带地质符号或编码信息。前述地质符号均取自表层地质图（surficial geologic maps）。
航空放射测量数据集则包含纬度、经度、海拔高度、地质符号或编码、表观铀（铋214）、钍（铊208）及钾（钾40）的含量数据、元素比值信息与辅助资料。