Geochemistry and zircon U-Pb-Hf isotopes of Early Paleozoic arc-related volcanic rocks in Sonid Zuoqi, Inner Mongolia: Implications for the tectonic evolution of the southeastern Central Asian Orogenic Belt
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文摘

Acid volcanic rocks with age of 439–445 Ma in Sonid Zuoqi were firstly reported.

They were arc derived from dominant juvenile materials with subordinate ancient crust.

A continental arc was reconstructed with magmatism from subduction- to collision-related.

The northward subduction initiated at ~ 500 Ma and terminated before Late Devonian.

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