TY  - JOUR
A1  - Rasskazov, Sergei V.
A1  - Chuvashova, Irina S.
A1  - Mikolaichuk, Alexander V.
A1  - Sobel, Edward
A1  - Yasnygina, Tatiana A.
A1  - Fefelov, N. N.
A1  - Saranina, Elena V.
T1  - Lateral change of sources for the Cretaceous-Paleogene magmatism of the Tian Shan
T2  - Petrology
N2  - The Southern and Northern-Central Tian Shan are sharply different in the character of the evolution of Cretaceous-Paleogene magmatism. The Southern Tian Shan comprises a picrobasalt-trachybasalt-basanite-phonotephrite-phonolite volcanic series, which was formed over a considerable time interval from 122 to 46 Ma, whereas the Northern-Central Tian Shan hosts a foidite-basanite-trachybasalt-basaltbasaltic andesite volcanic association, which erupted within a rather narrow time interval between 61 and 53 Ma. The entire volcanic series of the former region was derived from a shallow garnet-free mantle source. The volcanic assemblage of the latter region included basanites and foidites derived from a deep garnet-bearing mantle source, whereas trachybasalt, basalt, and basaltic andesite melts were generated in the lower crust. It is supposed that the change of sources and different evolutionary trends of Cretaceous-Paleogene magmatism in the Southern and Northern-Central Tian Shan were caused by the activation of the heterogeneous lithosphere beneath the converging shores of the Late Paleozoic Turkestan paleoocean.
Y1  - 2015
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/38968
SN  - 0869-5911
SN  - 1556-2085
VL  - 23
IS  - 3
SP  - 281
EP  - 308
PB  - Pleiades Publ.
CY  - New York
ER  -