In:
Доклады Академии наук, The Russian Academy of Sciences, Vol. 487, No. 4 ( 2019-08-27), p. 418-423
Abstract:
The Early Mesozoic Baga-Khentey pluton is the fragment of the Dauria-Khentey batholith, which could have formed due by the mantle plume action on lower horizons of the continental crust within the zone of collisional compression by closing of the Mongol-Okhotsk ocean. The batholith and their peripheral zones possibly formed from the mantle and crustal sources of magma. The Ikh-Narotin-Khid Massif is located on the border of the rifting zones on periphery of the Late Mesozoic area. The petrographic and geochemical affinity of granitoids of the Ikh-Narotin-Khid massif and composition of gneisses from the country rocks might indicate that this was the substratum in formation of palingenic granites of the calc-alkali series. The distinctions in rock composition of the large plutons consist in minor differentiation of the Baga-Khentey Massif rocks probably related to the anatexis conditions and origin of melts in the collisional compression setting. The granites of the Ikh-Narotin-Khid Massif formed in the extension setting favorable for deep differentiation of magmatic melts.
Type of Medium:
Online Resource
ISSN:
0869-5652
DOI:
10.31857/S0869-56524874
DOI:
10.31857/S0869-56524874418-423
Language:
Unknown
Publisher:
The Russian Academy of Sciences
Publication Date:
2019
detail.hit.zdb_id:
1109534-9
detail.hit.zdb_id:
3019980-3
SSG:
11
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