Geological map of Balchenfjella, Antarctic Geological Map Series, Sheet 31.

Geological map data of Antarctica held by the National Institute of Polar Research and the Geospatial Information Authority of Japan. There are two types of data available: (data1: geometrically corrected data) and (data2: raw image data).由国立极地研究所（National Institute of Polar Research）与日本国土地理院（Geospatial Information Authority of Japan）馆藏的南极地质图数据。当前可获取的数据分为两类：（数据1：经过几何校正的数据）与（数据2：原始图像数据）。