کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4738676 | 1414154 | 2016 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Trachyandesites of the Mogot volcanic field (Stanovoi volcanoplutonic belt, East Siberia): age, geochemical features, and sources Trachyandesites of the Mogot volcanic field (Stanovoi volcanoplutonic belt, East Siberia): age, geochemical features, and sources](/preview/png/4738676.png)
The performed 40Ar/39Ar geochronological studies yielded the first reliable age of trachyandesites of the Mogot volcanic field (115 ± 3 Ma), which, together with the age of trachyandesites of the Bomnak volcanic field (117 ± 1 Ma), gives grounds to recognize a new stage (117–115 Ma) of evolution of the Stanovoi volcanoplutonic belt superposed on the igneous and metamorphic complexes of the Dzhugdzhur–Stanovoi superterrane of the Central Asian Orogenic Belt and Stanovoi structural suture. The trachyandesites of the Mogot volcanic field are similar in geochemical features to adakites. Their parental melts resulted from the transformation of Precambrian continental crust under postcollisional extension after the formation of the Mongolo–Okhotsk orogen or under sliding along the boundary between the North Asian craton and the Amurian microcontinent.
Journal: Russian Geology and Geophysics - Volume 57, Issue 10, October 2016, Pages 1389–1397