The Structure, Composition, and Conditions of Generation for the Early Cretaceous Mongolia–East-Transbaikalia Volcanic Belt: The Durulgui–Torei Area (Southern Transbaikalia, Russia)

A system of variously sized basins filled with sediments and volcanic rocks was formed during Late Mesozoic time in Transbaikalia and adjacent areas of Mongolia and China. Magmatic formations are concentrated in three major volcanic belts: the Mongolia–West-Transbaikalia (MWT), the Mongolia–East-Transbaikalia (MET), and the Great Xing’an belt (GX). This paper presents a detailed description of the Early Cretaceous volcanism of the little-known MET belt within its Durulgui–Torei area, in particular, the Torei Lava Field (TLF) and a comparison between this and the same-age volcanism in the two other adjacent belts.