The existence of mantle plumes was first proposed in the 1970s to explain intra-plate,
hotspot volcanism, yet owing to difficulties in resolving mantle upwellings with geophysical …

To address the question of the initiation and mechanisms involved in the process of
subduction zone formation, we explored most of the available evidence for the subduction …

Boninites are rare, high-Si, high-Mg, low-Ti lavas that have considerable tectonic
significance, especially for recognizing and interpreting episodes of subduction initiation in …

How serpentinites in the forearc mantle and subducted lithosphere become involved in
enriching the subarc mantle source of arc magmas is controversial. Here we report …

Abstract The Izu‐Bonin‐Mariana (IBM) fore arc preserves igneous rock assemblages that
formed during subduction initiation circa 52 Ma. International Ocean Discovery Program …

Subduction initiation is one of the main unsolved issues in plate tectonics theory with
different proposed mechanisms. In the arc (plateau, terrane)-continent collision models, a …

Abstract International Ocean Discovery Program Expedition 352 to the Izu‐Bonin forearc
cored over 800 m of basement comprising boninite and boninite‐series lavas. This is the …

Tectonic discrimination diagrams are a key tool for understanding ancient volcanic rock
origins. In this contribution we compile over 15,000 whole rock compositions to re-evaluate …

A drastic change in plate tectonics and mantle convection occurred around 50 Ma as
exemplified by the prominent Hawaiian–Emperor Bend. Both an abrupt Pacific Plate motion …

Ophiolites, which represent segments of oceanic lithosphere obducted onto the continental
crust, provide an important window into processes such as continental rifting, mantle …