If the two plates that meet at a convergent plate boundary both are of oceanic crust, the older,denser plate will subduct beneath the less dense plate. Where is an example of an oceanic oceanic convergent plate boundary? We continue our trip upwestern North Americato find a convergent plate ...
Oceanic anoxic eventsGranitoidJapanIn general, the arc magmas are oxidized, forming magnetite-series granitoids. However, there are also ilmenite-series granitoids at convergent margins. The mechanism that controls the formation of different types of granitoids remains obscure. Here we show that the ...
Volcanic activity is a basic approach by which internal heat and materials are transported from deep to the surface on Earth (e.g., Cashman & Sparks, 2013; Wilson, 2009). The vast majority of volcanism on Earth occurs at spreading and convergent plate boundaries (e.g., mid-oceanic ridges...
Learn about the oceanic crust, including the oceanic crust definition, oceanic crust thickness and density, oceanic crust composition, and other...
Convergent morphology of the plankton represents adaptations for suspension in the water column, for movement within this water mass to increase nutrient uptake, and for protection against grazing or predation. Necessary attributes for cosmopolitan species include eurythermy and euryhalinity. The ...
Generation of continental crust in collision zones reflect the interplay between oceanic subduction and continental collision. The Gangdese continental crust in southern Tibet developed during subduction of the Neo-Tethyan oceanic slab in the Mesozoic pr
Cenozoic global plate motion models based on a hotspot reference frame may provide a useful framework for analyzing the tectonic evolution of the Solomon Islands convergent margin. A postulated late Miocene collision of the Ontong Java Plateau (OJP) with a NE-facing arc is consistent with the pred...
Impact of lower plate structure on upper plate deformation at the NW Sumatran convergent margin from seafloor morphology We present results from multibeam bathymetric data acquired during 2005 and 2006, in the region of maximum slip of the 26 Dec. 2004 earthquake (Mw 9.2). Th... D Graindorge...
Evolution of shallow, crustal thermal structure from subduction to collision: An example from Taiwan We study crustal thermal evolution by examining heat flow patterns along a convergent boundary from a young subduction zone to a more structurally mature c... Wu-Cheng,Chi$Donald,L.,... - 《Gsa...
The tonalite melts mildly modified due to low degree of mixing and interaction with the overlying lithospheric mantle. Subsequently, the Dadnah tonalites emplaced at the upper part of the mantle sequence of the Semail ophiolite and are geochemically distinct from the other mantle intrusive felsic ...