We systematically incorporate burial history, sea floor geometry and tectonic loads from a sequential kinematic restoration model into 2D evolutionary geomechanical that simulates the formation of Sandia salt diapir, Tarfaya basin, NW African Coast. use poro-elastoplastic description for sediment behaviour viscoplastic salt. Sedimentation is coupled with flow regional shortening to determine po...

This paper studies the ability of salt diapirs to lift large inclusions of dense rocks (rafts). Dense inclusions will be lifted if salt in the diapir rises faster than the inclusions sink. The power-law rheologies of six different salts, and viscosities estimated for Newtonian salt are used to calculate the settling velocity of these inclusions as a function of their radii and density as well a...

Abstract Subsurface salt movement in the absence of external tectonic forces can affect contemporaneous sediment deposition, mask allocyclic signals, and deform older strata. We used a discrete element model (DEM) to better understand salt-related modification sedimentary sequence with an increasing sedimentation rate. This permitted quantification thinning rates analysis lateral extent synkine...

The interactions between salt diapirs, thrust welds and thrusts in contractional belts are poorly understood due to, first, the inability of seismic data to distinguish or resolve associated sub-resolution deformation, second, paucity good field examples. Warraweena area Northern Flinders Ranges South Australia contains examples Neoproterozoic Early Cambrian squeezed diapirs linked by steep rev...

Understanding triggers and evolution of post-depositional sediment intrusion is major importance to decrease the risk associated with hazards infrastructure environment from events such as submarine landslides fluid escape. Whereas deep-sourced intrusions (>1 km) are widely documented, early burial examples poorly recognized have been described only in large deltas. Their formation had not yet ...

The Ma&tan alnijite contains a rich and varied megacryst suite of unprecedented compositional range. We have undertaken trace element and isotope modeling in order to formulate a petrogenetic scheme which links the host alniiite to its entrained megacrysts. This requires that a proto-alntiite magma is the product of zone refining initiated by diapiric upwelling (where the initial melt passes th...

[1] We present modeling of the seismic delay time signature of mantle diapirs mapped in the Oman ophiolite and compare these results with those of active source seismic experiments conducted along the East Pacific Rise. To do so, we construct models of shallow-mantle, seismic anisotropy that are consistent with Oman diapirs of different size. Forward calculations of the delay time anomalies due...