Shear-wave velocity structure beneath the Dinarides from the inversion of Rayleigh-wave dispersion
نویسندگان
چکیده
The interaction between the Adriatic microplate (Adria) and Eurasia is main driving factor in central Mediterranean tectonics. Their interplay has shaped geodynamics of whole region formed several mountain belts including Alps, Dinarides Apennines. Among these, are least investigated little known about underlying geodynamic processes. There numerous open questions current state Adria under Dinaric domain. One most interesting nature lithospheric underthrusting plate, e.g. length slab or varying disposition along orogen. Previous investigations have found a low-velocity zone uppermost mantle northern-central which was interpreted as gap. Conversely, newer studies indicated presence continuous with no trace low velocity zone. Thus, to investigate structure further, we use regional-to-teleseismic surface-wave records from 98 seismic stations wider create 3D shear-wave model. More precisely, two-station method used extract Rayleigh-wave phase while tomography 1D inversion employed map depth dependent velocity. Resulting model reveals robust high-velocity anomaly present Dinarides, reaching depths 160 km north more than 200 southern Dinarides. These results do not agree previous show lithosphere Europe region. geometry down-going varies deeper south shallower center. On-top both slabs there wedge indicating delamination could explain deep body existing
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ژورنال
عنوان ژورنال: Earth and Planetary Science Letters
سال: 2021
ISSN: ['1385-013X', '0012-821X']
DOI: https://doi.org/10.1016/j.epsl.2020.116686