341,444 for a project titled, Sulfur Isotopes in Subduction Systems and the Global Sulfur Cycle, which seeks to address the knowledge gap in the sulfur cycle by directly examining sulfur-bearing minerals in rocks from ancient subducted
plates and deep arc volcanic systems.
The research suggests that formation of adakite has various reasons including partial melting of subducted
oceanic crust, crystallization differentiation of mantle-derived basaltic magma, migmatization of magma, partial melting of delaminated lower crust and partial melting of thickened lower crust.
For example, Mauna Loa contains higher proportions of an igneous rock called pyroxenite, which comes from subducted
ocean crust that typically melts at deeper levels than the model suggests.
The undersea megathrust earthquake was caused when the Indian Plate was subducted
by the Burma Plate and triggered a series of devastating tsunamis along the coasts of most landmasses bordering the Indian Ocean, killing 230,000 people in 14 countries, and inundating coastal communities with waves up to 30 metres (100 ft) high It was one of the deadliest natural disasters in recorded history.
The analysis of the state of stress on convergent margins has traditionally focused on the forces exerted by and on the subducted
slab through ridge push occurring at the spreading centers and the slab pull, caused by the gravitational attraction of the dense slab (vanSummeren et al.
Some models suggest the presence of two subduction zones; with the Indian plate being subducted
beneath the Hindu Kush region and the Eurasian plate being subducted
beneath the Pamir region.
The strongest activity is centered at an intermediate depth of 60-200 km due to an old subducted
tectonic plate which can currently be found in an almost vertical position.
The Zagros Thrust Zone is located along the suture where the north-easterly directed Arabian Plate is subducted
below the Iranian (Asian) Plate.
During intra-oceanic subduction various parts of the subducted
plate were accreted to the base of the overriding slab and subjected to a temperature between about 9001000 C forming mylonitic peridotite and then continued downwards to form the sub-ophiolitic metamorphic rocks.
It all started with an undersea earthquake in the Indian Ocean when the Indio-Australian Plate subducted
below the Eurasian Plate.
At this time, while the subducted
oceanic crust was getting younger, the plate was progressively rising up, passing to a flat-slab subduction (Ramos and Folguera, 2009).
Based on the models, the researchers found that parts of the slab that is being subducted
sweep around behind the collision, pushing continental material into the mountain belt.