Airborne magnetic and radiometric survey, Munsungun region in northern Maine, 2021

This data release provides digital flight line data for a high-resolution airborne magnetic and radiometric survey over parts of northern Maine. The airborne data collection was funded by the U.S. Geological Survey (USGS) Earth Mapping Resource Initiative (Earth MRI) with goals of better understanding volcanogenic massive sulfide mineral deposits, sediment hosted manganese deposits, and their surrounding geologic framework. Data for this survey were collected and processed by Sander Geophysics under contract with the USGS. The airborne survey took place June-July 2021. Using a fixed wing aircraft with a magnetometer mounted in a tail stinger and a fully calibrated gamma ray spectrometer, data were collected along northwest-southeast [...]

本数据集发布提供了美国缅因州北部部分区域的高分辨率航空磁法与航空放射性测量的数字飞行线数据。本次航空数据采集工作由美国地质调查局（U.S. Geological Survey, USGS）地球测绘资源倡议（Earth Mapping Resource Initiative, Earth MRI）资助，旨在深入解析火山成因块状硫化物矿床、沉积型锰矿床及其周边地质格架。本次调查的数据由桑德地球物理公司（Sander Geophysics）依据与USGS签订的合同完成采集与处理。该航空测量作业于2021年6月至7月实施。本次测量采用固定翼飞机，搭载安装于尾撑杆的磁力仪（magnetometer）与经过全校准的伽马射线能谱仪（gamma ray spectrometer），沿北西-南东方向开展数据采集[...]