In:
Доклады Академии наук, The Russian Academy of Sciences, Vol. 486, No. 1 ( 2019-05-10), p. 98-102
Abstract:
Mesozoic dikes associated with the Karoo plume were studied within the East Antarctica where at Queen Maud Land on the Almannryggen massif high-Ti magnesian Fe-basalts were found. It is assumed that such basalts originate by means of the pyroxenite-containing mantle melting. The isotopic characteristics of the studied dolerites reflect the composition of the pyroxenite source - the ancient oceanic lithosphere (ЕМI), submerged at the mantle depths of 150-170 km in the paleosubduction zone of the Gondwanian continent and transformed 180 m.y. ago into the pyroxenite melt when interacting with the plume mantle peridotite.
Type of Medium:
Online Resource
ISSN:
0869-5652
DOI:
10.31857/S0869-56524861
DOI:
10.31857/S0869-5652486198-102
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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