A program of geologic mapping and lithogeochemical and geochronological sampling has been carried out over a 745-km area of the Atacama Desert surrounding the porphyry Cu deposits at Escondida, Zaldívar, and Chimborazo (Cordillera de Domeyko, northern Chile). The purpose of this study was to examine the regional tectonic and magmatic setting of this preeminent porphyry Cu district for evidence ...

Abstract The Tianshan Range–Junggar Basin– Kalamaili Range system represents the southwestern Central Asian Orogenic Belt and is a natural laboratory for studying intracontinental deformation processes. Its current topography product of farfield effects Cenozoic India-Asia collision. However, Mesozoic topographic tectonic evolution Ranges their impacts on Junggar Basin remain enigmatic due to s...

The Yuleken porphyry Cu-Mo deposit located in the Chinese Altay-East Junggar, a section of Central Asian Orogenic Belt, world's largest Phanerozoic subduction-accretionary orogen, witnessed multistage tectonic-magmatic evolution and mineralization from arc to syn- post-collision environment over time span about 52 Ma. Four types molybdenite have been distinguished: (1) primary magmatic-hydrothe...

The observed seismic anisotropy of the southern African mantle from both shear-wave splitting and surface wave observations provides important constraints on modes of mantle deformation beneath this ancient continent. We find that the mantle anisotropy beneath southern Africa is dominated by deformational events in Archean times occurring within the lithosphere, rather than present-day processe...

The Homrit Akarem granitic intrusion (HAGI) outcrops near the western edge of south Eastern Desert basement exposure in Egypt. It is a composite two cogenetic intrusive bodies: an early albite granite phase shallowly emplaced at apex magmatic cupola, and later subjacent pink with marginal zone muscovite better preservation features. Mineral chemistry primary biotite garnet, together whole-rock ...