Abstract We provide laser ablation–multicollector–inductively coupled plasma–mass spectrometry (LA-MC-ICP-MS) and high-precision chemical abrasion–isotope dilution–thermal ionization mass (CA-ID-TIMS) U-Pb ages Hf isotopic compositions of zircons from the Red Bluff Granite Suite mafic dikes in Franklin Mountains El Paso, Texas, USA. Granitoids exposed were previously divided into five magmatic ...

The stability of tunnel site depends upon the deformation behaviors surrounding rocks, including joint density, mineral composition, micro cracks, and grain boundaries. aim this study was to analyze mechanical properties Besham Complex in Northern Pakistan terms petrography analysis. complex is prone as it bounded by Main Mantle Thrust (MMT) north, Thakot fault (Tf) east, Swat block west. In ar...

A millimeter-sized fluorite crystal found in leucocratic syenite of the Velykovyska massif on Ukrainian Shield became object study. This is a irregular shape with smoothed corners, broken by system contraction cracks inlaid basnäsite-(Ce). The latter characterized REE content 57± 5 wt. %, CaO - 3.3 ± 0.25 % and Ce2O3 : La2O3 Nd2O3 ratio 6 4 1. detailed study using microprobe JXA-733 an electron...

The Mogok Metamorphic Belt (MMB) in Myanmar is a polymetamorphic, mainly Paleogene granulite-uppermost amphibolite facies terrane consisting of marbles and calc-silicates hosting spinel, ruby sapphire. Jurassic charnockite-syenite intrusions, as well Eocene-Miocene leucogranite intrusions are also present. Pelitic rocks uncommon, where present, have sillimanite, both primary inclusions garnet s...

The Ditrău Alkaline Massif (DAM) is an igneous massif in the Eastern Carpathian Mountains of Romania. Numerous geochronological and geochemical studies have proposed a long formation history (ca. 70 m.y.) DAM from Middle Triassic to Cretaceous times, which hardly reconcilable with evolutionary models geotectonic environment during Mesozoic this part Mountains. In order put tighter age constrain...