Starting in May 2018, a volcano-tectonic crisis occurred the vicinity of Mayotte, volcanic island Comoros Archipelago Mozambique Channel. The origin volcanism but also subsurface architecture and nature crust, remain unknown. Here, based on receiver function analyses that provide S-wave velocity profiles, we determine depth Mohorovičić discontinuity (Moho) VP/VS ratios for islands We propose cr...

Southeastern Tibet marks the site of presumed clockwise rotation of the crust due to the India–Eurasian collision and abutment against the stable Sichuan basin and South China block. Knowing the structure of the crust is a key to better understanding of crustal deformation and seismicity in this region. Here, we analyze recordings of teleseismic earthquakes from 25 temporary broadband seismic s...

Residual aeromagnetic data of parts Southeastern Nigerian sedimentary basin were reduced to the equator and subjected magnetic vector inversion spectral analysis. Average depths source ensembles from analysis used compute depth tops (Z), base layer (Curie Point t Depth (CPD)), estimate geothermal gradient heat flow required for evaluation resources study area. Results showed top ranging between...

[1] The Cenozoic rift system of Baikal, located in the interior of the largest continental mass on Earth, is thought to represent a potential analog of the early stage of breakup of supercontinents. We present a detailed P wave velocity structure of the crust and sediments beneath the Central Basin, the deepest basin in the Baikal rift system. The structure is characterized by a Moho depth of 3...

[1] We collected a new data set of 1354 broadband SPdKS waveforms sampling the western Pacific Ocean region. These data indicate that multiple ultralow-velocity zones (ULVZs) exist in this region. We compared these data to 2.5-D synthetic seismograms computed with the PSVaxi method for a suite of 517 ULVZ models. The region beneath the North and South Philippine Sea shows no evidence for ULVZ p...

Thrusting implication in the crustal thickening history of eastern Tibet is highly debated. The ?250 km-long Muli thrust Yalong belt SE a major Miocene structure with pronounced topographic step (?2,000 m). Using thermo-kinematic modeling based on thermochronology data, we constrain geometry as being steep (>70°) at surface, agreement field observations, and flattening depth (?20 km) an intra-c...

We present a new crustal cross section through the east-west trending ultrahigh-pressure (UHP) Dabie Shan orogenic belt, east central China, based on a 400km-long seismic refraction profile. Data from our profile reveal that the cratonal blocks north and south of the orogen are composed of 35-km-thick crust consisting of three layers (upper, middle, and lower crust) with average seismic velocit...