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RISPetrogenesis of Subvolcanic rocks from the Khunik Prospecting Area, South of Birjand, Iran: Geochemical, Sr-Nd Isotopic and U-Pb Zircon Constraints
ratios (0.704196–0.704772) and εNdi values (+1.3 to +3.3) are compatible with an origin of the parental melts in a supra-subduction mantle wedge. Zircon U–Pb dating by LA-ICP-MS indicates the age of 38±1 Ma (late Eocene) for subvolcanic units...
U–Pb zircon geochronology, petrochemical and Sr–Nd isotopic characteristic of Late Neoproterozoic granitoid of the Bornaward Complex (Bardaskan-NE Iran)
ages (Jurassic, Cretaceous or even younger ages) by many studies. In the present study, new isotopic information based on zircon U–Pb dating has revealed the origin and time of the formation of the BGC. These new results do not confirm previously...
Zircon U-Pb geochronology, Hf isotopes in the Simorgh area Zircon U-Pb geochronology, Hf isotopes and geochemistry of intrusive rocks in the Simorgh prospecting area, Lut Block, Eastern Iran: Petrogenesis and geological implications
to be related to these intrusions. To better understand the petrogenesis of these intrusions, we report zircon U-Pb dating and Hf isotopes and whole rock geochemistry of two granites and one diorite. Age dating using Zircon U-Pb method on pyroxene diorite...
Geochronology, Radiogenic Isotope Geochemistry, and Petrogenesis of Sangbast Paleo-Tethys Monzogranite, Mashhad, Iran
is between 212-481 ppm. The result of U-Pb zircon age dating of monzogranite is 201.3 ± 3.6 Ma (Upper Triassic, Rhaetian time). The initial 87Sr/86Sr and 143Nd/144Nd ratios for monzogranite is (0.706776 and 0.512219) when recalculated to an age of 201 Ma...
U-Pb zircon geochronology and Sr-Nd isotopic characteristic of late Neoproterozoic Bornaward granitoids (Taknar zone exotic block), Iran
granite) gave ages of 154 to 111 Ma. The results of U-Pb zircon dating of granodiorite is 552.69 ± 10.89 Ma and granite is 538.22 – 1.82, + 4.28 Ma (late Neoproterozoic time).
Both granite and granodiorite are classified as belonging to the ilmenite...
Rb–Sr and Sm–Nd isotopic compositions, U-Pb Age and Petrogenesis of Khajeh Mourad Paleo-Tethys Leucogranite, Mashhad, Iran
leucogranite, are identified. The results of U-Pb zircon
age of Khajeh Mourad biotite muscovite leucogranite is 205.9 ± 4.1 Ma (Late Triassic, Rhaetian).
Chemically, biotite muscovite leucogranite and aplite granite are peraluminous S-type pluton...
Zircon U-Pb geochronology, Hf isotopes and geochemistry of intrusive rocks in the Gazu copper deposit, Iran: Petrogenesis and geological implications
from 2.5 to 5.2 wt.%. The intrusions have features typical of high-K calc-alkaline rocks, are metaluminous to weakly peraluminous, and formed in a volcanic arc setting. Zircon U-Pb age data for hornblende monzonite porphyry, hornblende monzodiorite...
Geochronologic, geochemical, and isotopic constraints on petrogenesis of the dioritic rocks associated with Fe skarn in the Bisheh area, Eastern Iran
by melting of an enriched phlogopite-bearing mantle source combined with subsequent crustal contamination.
High values of Rb, Ba, and Th support magma contamination in the upper crust during magma evolution.
Zr-U-Pb age dating for two diorite...
U-Pb geochronology and petrogenesis of intrusive rocks: constraints on the mode of genesis and timing of Cu mineralization in SWSK area, Lut Block
(Nb, P, Ti) and enrichment of LREE relative to HREE indicate the formation of source magmas above a subduction zone. The results of zircon U–Pb dating give constraints on the timing of emplacement of biotite quartz monzonite and hornblende diorite...
U–Pb Geochronology, Sr–Nd Geochemistry, Petrogenesis and Tectonic Setting of Gandab Volcanic Rocks, Northeastern Iran
This paper addresses U–Pb geochronology, Sr–Nd geochemistry, petrogenesis and tectonic setting in the Gandab volcanic rocks. The Gandab volcanic rocks belong to the Sabzevar zone magmatic arc (northeastern Iran). Petrographically, all the studied...