A correction procedure is proposed to account for the effect of secondary X-ray fluorescence near grain boundaries in electron microprobe analysis. The procedure is based on the Monte Carlo simulation method, which is used to calculate the X-ray spectrum emitted by the mineral couple (i.e., the mineral of interest with the neighboring mineral). The contribution of secondary fluorescence from th...

Relevant data on the structure and composition of crystalline basement in Central México can be found by means plutonic, metamorphic, sedimentary xenoliths transported Neogene Quaternary volcanic eruptions within Trans-Mexican Volcanic Belt (TMVB). We present detailed major oxide trace elements concentrations, isotopic analysis thermobarometric estimations for a granitic xenolith an Early Mioce...

The metamorphic reworking of mineralized pegmatites during orogenesis remains unclear, making the genesis and tectonomagmatic significance pegmatite mineralization obscure. This study demonstrates multiple utilities titanite geochemistry in establishing Caledonian evolution world’s largest intra-plutonic Nb-Y-F Paleoproterozoic host rocks Tysfjord, Northern Norway. A combination titanite-specif...

geothermobarometry equations are based on thermodynamic principles and appear in single or multi-variant functions. the number of variants for a specific composition or reaction usually is reduced into 2 involving temperature (t) and pressure (p). since most of planned equations have two passive or variant p and t, using these equations should be with special care. it is very effective to use g...

Two tectonic scenarios have been proposed for genesis and emplacement of the Oman ophiolite. One suggests that the ophiolite was generated at a spreading center, the other suggests generation within an intraoceanic arc. An integrated thermal and kinematic model of the temperature, stress, rock type, and displacement fields during early stages of the emplacement ofthe Oman ophiolite was develope...

[1] A >500-km-long east-west trending metamorphic belt in the Qiangtang terrane of central Tibet consists of tectonic melange that occurs in the footwalls of Late Triassic–Early Jurassic domal low-angle normal faults. The melange is comprised of a strongly deformed matrix of metasedimentary and mafic schists that encloses lesser-deformed blocks of metabasites, Carboniferous–Triassic metasedimen...