TY  - SER
AU  - Vrublevskii,V.V.
AU  - Gertner,Igor F.
AU  - Chugaev,A.V.
TI  - Parental sources of high-alumina alkaline melts: Nd, Sr, Pb, and O isotopic evidence from the Devonian Kiya-Shaltyr gabbro-urtite intrusion, South Siberia
KW  - изотопная геохимия
KW  - микроэлементный состав
KW  - Кия-Шалтырский габбро-уртитовый интрузив
KW  - девон
KW  - Южная Сибирь
KW  - статьи в журналах
N1  - Библиогр.: 15 назв
N2  - The isotope geochemistry (Nd(t) 4.8–5.4, 206Pb/204Pbin 18.05–18.36, 207Pb/204Pbin 15.53–15.57, 208Pb/204Pbin 37.59–37.83, 87Sr/86Sr(t) 0.7048–0.7057, 18OSMOW 8–10.5‰) and trace element compositio of the Kiya–Shaltyr gabbro–urtite pluton allow us to suggest a heterogeneous source and complex geodynamic settings of the Devonian alkali magmatism in the Kuznetsk Alatau. It is assumed that its evolution took place under conditions of partial mingling of matter of the depleted (PREMA) and enriched (EM) mantle with crustal contamination of the evolving melt. Such an interaction could have been a result of superposition of a mantle plume and an active margin (IOB and IAB components). In fold belts this led to the formation of hybrid high-alumina foidoite magmas
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000724011
ER  -