| Autor: |
Supendi, P, Nugraha, AD, Widiyantoro, S, Abdullah, CI, Rawlinson, N, Cummins, PR, Harris, CW, Roosmawati, N, Miller, MS |
| Přispěvatelé: |
Supendi, P [0000-0002-9784-9865], Nugraha, AD [0000-0002-4844-8723], Widiyantoro, S [0000-0002-8941-7173], Rawlinson, N [0000-0002-6977-291X], Cummins, PR [0000-0001-8826-3021], Harris, CW [0000-0002-9603-0014], Miller, MS [0000-0001-5494-2296], Apollo - University of Cambridge Repository |
| Rok vydání: |
2020 |
| Předmět: |
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| Popis: |
A new 3‐D seismic P wave velocity model of the Sunda‐Banda Arc Transition from local earthquake tomography reveals (i) northward subduction of oceanic lithosphere, associated with the convergence of Australia and Sundaland, as a high‐velocity zone extending down to ~200 km depth; (ii) two distinct low‐velocity zones, one immediately above the slab, which is likely a zone of partial melt, and one in the 0–40 km depth range, which is probably a magma chamber associated with active volcanoes above; and (iii) a northerly dipping high‐velocity zone that bisects the two low‐velocity anomalies, which we interpret as an underthrust forearc sliver of continental origin. Based on He3/He4 measurements from volcanic outflows, it is possible that the magma supply is contaminated by interaction with this forearc sliver as it ascends from the melt region below. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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