The Tibetan Plateau (TP) is the youngest orogenic belt formed by continental collision on Earth. It a natural laboratory for studying dynamics such as convergence, plate subduction, and plateau uplift. Studying its deep structure has always been hot issue in geological research. Moho interface between crust mantle an important of Earth's circle. Its depth, lateral variation, fine crust-mantle a...

The lower crust has long been recognized as a place where significant chemical evolution of magma occurs. Understanding the conditions that lead to long-term storage in or rapid transport through these crustal systems remained challenge. In this study, active-source seismic data are processed image prominent reflectors and upper mantle near Mount St. Helens. Results show strong weak near-Moho r...

New seismic data on the crust and upper mantle of South America have recently become available describe its deep structure with unprecedented resolution. Here, are combined gravity mineral physics constraints to develop self-consistent models temperature, composition, density American lithospheric sub-lithospheric mantle. A new model crustal was developed, including sediment average depth Moho....

The Egyptian passive continental margin is considered a remarkable geologic setting, in addition to being an occupation and manufacturing locality north Egypt. This work used accessible potential field data, such as marine gravity provide wider vision of the area under investigation. results two-dimensional (2D) modelling revealed good agreement between modelled observed fields, including known...

Crustal thickness is a critical parameter for understanding the processes of continental rifting and breakup and the evolution of petroleum systems within passive margins. However, direct measurements of crustal thickness are sparse and expensive, highlighting the need for methodologies using gravity anomaly data, jointly with other geophysical data, to estimate crustal thickness. We evaluated ...

Converted and multiply reflected phases from teleseismic events are routinely used to create structural images of the crust-mantle boundary (Moho) and the elasticity contrasts within the crust and upper mantle. The accuracy of these images is to a large extent determined by the background velocity model used to propagate these phases to depth. In order to improve estimates of 3-D velocity varia...

Srivastava. B.J.. Singh, B.P. and Lilley. F.E.M.. 1984. Magnetometer array studies in lndia and the lithosphere. In: S.M. Naqvi. H.K. Gupta and S. Balakrishna (Editors). Lithosphere: Structure. Dynamics and Evolution. Tectono&sics. 105: 355-371. Two magnetometer array experiments were conducted in India during 1978-1980, under an IndoAustralian collaboration project, using 21 Australian three-c...

Seismic anisotropy measurements show that upper mantle hydration at the Middle America Trench (MAT) is limited to serpentinization and/or water in fault zones, rather than distributed uniformly. Subduction of hydrated oceanic lithosphere recycles back into deep mantle, drives arc volcanism, and affects seismicity subduction zones. Constraining extent an important part understanding many fundame...

The Patagonian slab window has been proposed to enhance the solid Earth response ice mass load changes in overlying Northern and Southern Icefields (NPI SPI, respectively). Here, we present first regional seismic velocity model covering entire north-south extent of window. A slow anomaly uppermost mantle indicates warm temperature, low viscosity, possibly partial melt. Low velocities just below...