مشخصات پژوهش

عنوان	Enhancement and Mapping of Weak Multivariate Stream Sediment Geochemical Anomalies in Ahar Area, NW Iran
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Robust principal components analysis, Singularity mapping, Stream sediment geo-chemical data, Iran
چکیده	In this study, stream sediment geochemical data have been subjected to robust principal components analysis (RPCA) and singularity mapping (SM) to enhance and map significant multivariate geochemical anomalies (i.e., mineralization-related) in Ahar area, NW Iran. The RPCA was applied to (a) account for the compositional nature of stream sediment geochemical data using suitable log-ratio transformation, (b) modulate the effect of outliers in component estimation and (c) derive a multivariate geochemical footprint of mineralization. The SM was applied to extract anomalous patterns of the multivariate geochemical footprint of mineralization. The exploration targets were then delineated using Student’s t-statistics analysis. The correlations of mapped exploration targets with the known mineral occurrences and mineralization-related patterns were further evaluated using normalized density index and overall accuracy analyses.
پژوهشگران	مهیار یوسفی (نفر چهارم)، امانوئل جان ام کارانزا (نفر سوم)، عباس مقصودی (نفر دوم)، محمد پارساصدر (نفر اول)