Airborne geophysical survey: Spartanburg 1° x 2° 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.

本数据集包含航空磁测数据（Aeromagnetic data）与航空放射性测量数据（Aeroradiometric data），由航空器搭载的探测仪器沿飞行航线采集，同步记录磁场测量值、放射性测量值及位置信息。其中航空磁测数据集包含纬度、经度、飞行高度及磁场强度值，同时附带地质符号或编码，该类地质符号源自地表地质图（surficial geologic maps）。航空放射性测量数据集则包含纬度、经度、飞行高度、地质符号或编码、表观铀（铋214）、钍（铊208）、钾（钾40）的含量、元素比值及辅助信息。