The Schwaner Mountains in southwestern Borneo form a large igneous province with a complex magmatic history and poorly known tectonic history. South-dipping subduction systems in southern Tethys region represents an effort onĪssessing rifting mechanisms in the opening of the Tethys Ocean and break-up of

Subduction in the south of Tethys Oceans. Relationship and evolution between such south-dipping subduction and north-dipping North-dipping subduction in our study region is also examined. In addition, one more tectonic scenario relevant to the Mantle beneath the Indian ocean and West Australia, and link them to arc systems in Relevant to slab remnants of south-dipping Tethyan subduction in the present-day We further identify seismic fast velocity anomalies likely Fast velocity anomalies in the mantle beneath the same region are then converted to cold anomalies and their volumes areįurther estimated and compared to the volumes evaluated from these two Mesozoic

We next evaluate their slab volumesĪfter thermal diffusion in the current mantle.

Southwest Borneo Block and the Woyla Arc. Reconstruction and focus on two potential events located along the northern edges of We synthesize the Mesozoic south-dipping subduction evolutions in the global Studies, have generally been omitted in the reconstruction of Tethyan evolution. The presence of south-dipping subduction, though geologically proposed by numerous North-dipping subduction as the same terranes accreted to southern Eurasia. These oceans were terminated by well observed (including the Paleo-Tethys and Neo-Tethys) along its southern margin as terranes The evolution of the Tethys Ocean involved several episodes of ocean opening

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