Late Paleozoic rare-metal granitoid magmatism of the Southern Baikal region

Антипин, В. С.; Perepelov, A. B.

doi:10.1134/s0869591111040035

Cited by 15 publications

(9 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7b) It is also important that the schists of the Bitu-Dzhida Fm. are similar in composition to the continental crust, except for small positive anomalies at Cs, B, and Li (Antipin and Perepelov 2011). The distribution of trace elements, including REE, in the rare-metal granites of the BituDzhida Pluton is consistent with the model of the fractional crystallization of primary magmas during the formation of granites of the second phase (Figs 6b and 7b).…”

Section: Bitu-dzhida Plutonsupporting

confidence: 77%

“…The two plutons of the Khamar-Daban Range have similar mineral compositions of early biotite and late rare-metal Li-mica-bearing granites (Antipin and Perepelov 2011). They differ from each other mainly by the quantitative proportions of major minerals.…”

Section: The Urugudei Plutonmentioning

confidence: 98%

“…2 Schematic geologic structure of the Kharagul (a) and Urugudei (b) rare-metal granitoid plutons (Antipin and Perepelov 2011). intrusions. The Kharagul Pluton (Fig.…”

Section: Urugudei Plutonmentioning

confidence: 99%

“…Three main intrusive phases were distinguished. According to Antipin and Perepelov (2011), the first phase was Late Carboniferous (311 ± 10 Ma, whole-rock Rb-Sr method). The first phase is represented by small outcrops in the Russian part of the Pluton and considerable exposures of medium-grained and porphyritic biotite granites in Mongolia.…”

Section: The Bitu-dzhida Plutonmentioning

confidence: 99%

“…Despite numerous experimental and geochemical works as well as fluid-inclusion studies (Kovalenko 1977;Christiansen et al 1988;Taylor 1992;Štemprok and Seltmann 1994;Dostal and Chatterjee 1995;Raimbault et al 1995;Reyf et al 1999;Antipin et al , 2011Kostitsyn 2001;Badanina et al 2010;Gu et al 2010), the origin of Li-F granites is still open to discussion. The debate concerns the sources of granite magma, mechanism of enrichment in rare elements, and role of fluids in ore concentration.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Late Paleozoic and Early Mesozoic rare-metal granites in Central Mongolia and Baikal region: review of geochemistry, possible magma sources and related mineralization

Антипин¹,

Gerel

Perepelov³

et al. 2016

Jour. Geosci.

View full text Add to dashboard Cite

The Central Asian Orogenic Belt (CAOB) was a scene of intense granitoid magmatism during the Phanerozoic with formation of vast batholiths: Angara-Vitim and Daurian-Khentei. In the Late Paleozoic and Early Mesozoic times, the peripheral zones of batholiths underwent granitic magmatism associated with rare-metal mineralization. Petrological and geochemical studies show that the rare-metal Li-F granites formed, with a gap about 100 My, large igneous provinces of the Mongol-Okhotsk Belt. Late Paleozoic rare-metal granites build a series of multiphase plutons in the Baikal region (e.g. Kharagul 318 ± 7 Ma, Bitu-Dzhida 311 ± 10 Ma and Urugudei 321 ± 5 Ma). The early medium-grained biotite granites and leucogranites were followed by topaz-bearing microcline-and amazonite-albite granites and a series of dikes. The Early Mesozoic epoch was marked by the formation of the Daurian-Khentei Batholith in the center of area and rifting zones with alkaline and rare-metal granite plutons on the peripheries. In contrast to the Late Paleozoic, small Early Mesozoic intrusions (e.g., Avdar Pluton ~10 km 2 , 212-209 Ma) of rare-metal Li-F granites within the Avdar-Khoshutul series of granitoids coexisted with sizable plutons (e.g., Janchivlan Pluton ~70 km 2 , 227-195.3 Ma). Rare-metal Li-F granites of the Janchivlan Pluton produced small domal intrusions composed of microcline-albite, amazonite-albite and albite-lepidolite granites. The Sn-Ta-Nb mineralization is associated with albite-lepidolite granites. The rare-metal granites of the Baikal region and Central Mongolia of contrasting ages show an identical geochemical signature of Li-F granites. It is expressed by increase in F, Li, Rb, Cs, Sn, Be, Ta and Pb and decrease in Sr, Ba, Zn, Zr, Th and U contents in course of multiphase intrusions formation. The geochemical data confirm the magmatic model for genesis of the studied rare-metal Li-F granites. However, this process of magma differentiation was terminated with formation of albitites, microclinites and muscovite greisens. The whole-rock geochemistry and isotopic composition of the granites points to the Precambrian crust of the Baikal region (T 2DМ = 1.0-1.3 Ga) as the most likely source. We propose the formation of the initial granitic melts due to anatexis of the higher levels of the continental crust, with fluids released during granulite-facies metamorphism in the lower crust. The rare-metal Li-F granites of the studied provinces are intraplate formations geochemically different from the Early Paleozoic collisional granitoids. This could be caused by the influence of deep-seated source on the occurrence of rare-metal magmatism.

show abstract

Section: Bitu-dzhida Plutonsupporting

confidence: 77%

Section: The Urugudei Plutonmentioning

confidence: 98%

“…2 Schematic geologic structure of the Kharagul (a) and Urugudei (b) rare-metal granitoid plutons (Antipin and Perepelov 2011). intrusions. The Kharagul Pluton (Fig.…”

Section: Urugudei Plutonmentioning

confidence: 99%

Section: The Bitu-dzhida Plutonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Late Paleozoic and Early Mesozoic rare-metal granites in Central Mongolia and Baikal region: review of geochemistry, possible magma sources and related mineralization

Антипин¹,

Gerel

Perepelov³

et al. 2016

Jour. Geosci.

View full text Add to dashboard Cite

show abstract

Distributions and geochemical behaviors of oxyanion-forming trace elements and uranium in the Hövsgöl–Baikal–Yenisei water system of Mongolia and Russia

Mochizuki

Murata

Hosoda

et al. 2018

Journal of Geochemical Exploration

View full text Add to dashboard Cite

Geochemistry of Early Paleozoic granitoids of the Baikal region and their geodynamic setting exemplified by the Khamar-Daban Ridge and Olkhon Island

Антипин

Gorlacheva

Makrygina

2014

Russian Geology and Geophysics

View full text Add to dashboard Cite

Comparative study of geological and isotope-geochemical features of the Early Paleozoic granitoids of the Khamar-Daban Ridge and Olkhon Island located in the Baikal region has revealed their close age and composition. Besides, they were referred to as syncollisional S-type formations derived from gneiss-schistose substratum of metamorphic sequences. Granitoids of the Solzan massif in the Khamar-Daban Ridge, as well as the Sharanur complex on Olkhon Island, occur in the autochthonous and allochthonous facies. They primarily consist of migmatites, plagiogranites, gneiss granites, and K–Na-granites. The magmatic rocks of the Sharanur complex include subalkaline granosyenites and quartz syenites spatially proximal to K–Na-granites. In the north of the island we investigated alkaline syenites which might be related to the Budun massif of basic rocks. On Olkhon Island in the Tashkiney valley, the surveyors recognized the geochemical type of pegmatoid rare-metal granites bearing beryllium mineralization. As was found, they are distinguished from Be-muscovite and spodumene pegmatites of the Khamar-Daban by high Rb, Cs, Sn, Nb, Ta, and W but low Li concentrations, which is probably due to Li-enrichment in the protolith of the Kornilova Formation relative to the Olkhon sequence. This points to the inheritance of the protolith composition at all stages of syncollisional granite formation. The geochemical study has shown similarity of calc-alkaline and subalkaline granitoids of the Khamar-Daban Ridge and Olkhon Island and their affinity in age and average composition of the regional continental crust. In addition, it has revealed the evidence for the existence of the Olkhon–Khamar-Daban block occurring as a single terrane in the Baikal region.

show abstract

Late Paleozoic rare-metal granitoid magmatism of the Southern Baikal region

Cited by 15 publications

References 6 publications

Late Paleozoic and Early Mesozoic rare-metal granites in Central Mongolia and Baikal region: review of geochemistry, possible magma sources and related mineralization

Late Paleozoic and Early Mesozoic rare-metal granites in Central Mongolia and Baikal region: review of geochemistry, possible magma sources and related mineralization

Distributions and geochemical behaviors of oxyanion-forming trace elements and uranium in the Hövsgöl–Baikal–Yenisei water system of Mongolia and Russia

Geochemistry of Early Paleozoic granitoids of the Baikal region and their geodynamic setting exemplified by the Khamar-Daban Ridge and Olkhon Island

Contact Info

Product

Resources

About