Fission track dating phosphate minerals thermochronology apatite dating russian love ru 2016

The Northern Qaidam Basin is located at the northeastern part of the Qinghai-Tibetan Plateau.It contains very thick Cenozoic terrestrial clastic sediments, which records the formation of the northern Qaidam Basin due to compressional deformation during the Indo-Asian collision.A concentrate with the contents of REE 9.3% and increase in elements such as F, Sr, Na, and light rare earth elements (LREE) from early P1C1 to late C5 carbonatite host rocks.

Fossil hot spot-ridge interaction in the Musicians Seamount Province: geophysical investigations of hot spot volcanism at volcanic elongated ridges, J.Another advantage of is that the Cl content is a function of fluid compositions and PT conditions.This is in contrast to the Cl content of amphibole and biotite which are correlated with other chemistry of the minerals such as Fe during progressive metamorphism of gabbro to coesite eclogite at Yangkou in the Sulu UHP province suggests that fluids in the UHP stage had higher salinity than those in the earlier HP stage, reflecting development of Cl enrichment in fluids along the prograde metamorphic path.In this paper, we used detrital apatite fission-track thermochronology, including 4 sandstones and 2 conglomerates samples from the Lulehe section, to reveal the Cenozoic evolution of the northern Qaidam Basin.Fission-track dating indicated the source region of the Lulehe section has experienced important cooling and uplifting in the Late Cretaceous (at ~85.1 Ma and ~65 Ma) and the Eocene (~52 Ma), respectively.4150121177) and the Fundamental Research Funds for the Central Universities (862457, lzujbky-2016-22).The Subei Basin is located at the intersection of the northeastern end of the Altyn Tagh Fault (ATF) and the western end of the Danghe Nan Shan in the northeastern Tibetan Plateau.In order to gain the knowledge for processing an extremely REE-enriched igneous-hydrothermal ore type, beneficiation studies by flotation were carried out at GTK and CGL for an content of 11.7% and a total REE concentration of 1.8%.Flotation parameters, including the collector type and dosage, depressant type and dosage, and grinding size were tested.The AFT age distribution on the section suggested that the provenance of Lulehe section sediments were mainly derived from the south Qilian Shan (Qilian Mountains) and Altun Shan (Altun Mountains), and two significantly provenance changes may occur at 43.4-46.1 Ma and ~37.8 Ma, respectively.The results may have strong constrains on the Cenozoic deformation and tectonic evolution of the northern Qaidam Basin and Qinghai-Tibet Plateau.

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