Title :
Extraction of mineral alteration anomaly zone from aster data in inner Mongolia, China
Author_Institution :
Inst. of Miner. Resources, China Metallurgic Geol. Bur., Beijing, China
Abstract :
Spectral measurements made in the Manzhouli area, Inner Mongolia, China, using the Advanced Spaceborne Thermal Emission and Reflection Radiometer, in the laboratory and in situ show dominantly Al-OH and ferric-iron VNIR-SWIR absorption features in felsic rock spectra and ferrousiron and Fe,Mg-OH absorption features in the mafic rock spectra. ASTER ratio images, principal component analysis (PCA) were evaluated for extracting the mineral alteration anomaly. And some deposits are related to zones of mineral alteration obtained from remote sensing. The study shows that ASTER data may provide independent parameters useful for regional geological surveys.
Keywords :
geochemistry; geology; infrared spectra; iron; iron compounds; minerals; principal component analysis; radiometers; remote sensing; rocks; spectrochemical analysis; AI-OH; ASTER ratio images; AlOH; Aster data; China; Fe; FeMgOH; Manzhouli area; Mg-OH absorption features; advanced spacebome thermal emission; felsic rock spectra; ferric-iron VNIR-SWIR absorption features; ferrous-iron; in situ; inner Mongolia; mafic rock spectra; mineral alteration anomaly; mineral alteration anomaly zone extraction; mineral alteration zones; principal component analysis; reflection radiometer; regional geological surveys; spectral measurements; Abstracts; Geology; Image analysis; Image resolution; Optical reflection; Radiometry; Sensors; ASTER; Extraction; Manzhouli; Mineral alteration anomaly; PCA;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6351913
