In the Rio Maria and Sapucaia Domains of Carajás Province, during Mesoarchean, tonalite-trondhjemite-granodiorite (TTG) series (2.98–2.92 Ga; Colorado Trondhjemite) sanukitoid rocks (?2.87 Suite Ourilândia do Norte) were formed. They followed, in Neoarchean (2.75–2.73 Ga), by numerous stocks granitoids similar to A-type granites (Vila Jussara Suite). Despite compositional differences between th...

The Proterozoic eon is characterized by an unusual abundance of ferroan feldspathic rocks that range in composition from granite to quartz syenites to feldspathoid-bearing syenites. Three associations of ferroan rocks may be recognized on the basis of major element compositions: (1) metaluminous alkalic to alkali-calcic syenites and granites associated with anorthosites and iron-rich basaltic r...

Abstract Granite typology categorizes granitoid rocks based upon distinguishing characteristics that are interpreted to indicate sources, conditions of generation, and, by implication, tectonic setting. Complexities elemental and isotopic geochemistry, however, commonly preclude simple typological interpretation suggest more complex petrogenetic histories. Granitoids from the Songpan-Ganzi terr...

Based on our previous work on the use of subspace distances for the outlier deiection problem in video sequences under afFne projection. this paper reports ourfurther analysis of the problem and presents fwo algorithms for computing the reprojection errors of imagefeatures in the outlier detection process. Extensive experiments on real video sequences have been conducted to verrfi the performan...