Airborne geophysical survey: Charleston 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.本数据集由航空器搭载的测量仪器沿飞行航线采集航空磁测（aeromagnetic）与航空放射性测量（aeroradiometric）数据，同步记录磁场强度、放射性数值与定位信息。其中磁测数据集涵盖纬度、经度、海拔高度与磁场强度数值，同时附带地质符号或编码，此类地质符号源自地表地质图。航空放射性测量数据集则涵盖纬度、经度、海拔高度、地质符号或编码、表观铀（铋214）、钍（铊208）、钾（K-40）、元素比值及辅助信息。