A diapir (/ˈdaɪ.əpɪər/;[1][2][3] from French diapir[djapiʁ], from Ancient Greek διαπειραίνω (diapeiraínō) 'to pierce through') is a type of intrusion in which a more mobile and ductily deformable material is forced into brittle overlying rocks. Depending on the tectonic environment, diapirs can range from idealized mushroom-shaped Rayleigh–Taylor instability structures in regions with low tectonic stress such as in the Gulf of Mexico to narrow dikes of material that move along tectonically induced fractures in surrounding rock.
The term was introduced by Romanian geologist Ludovic Mrazek, who was the first to understand the principle of salt tectonics and plasticity. The term diapir may be applied to igneous intrusions, but it is more commonly applied to non-igneous, relatively cold materials, such as salt domes and mud diapirs. If a salt diapir reaches the surface, it can flow because salt becomes ductile with a small amount of moisture, forming a salt glacier.[4]
^"diapir". The American Heritage Dictionary of the English Language (5th ed.). HarperCollins.
^"diapir". The American Heritage Dictionary of the English Language (4th ed.). Houghton Mifflin. 2000. Archived from the original on 2006-12-08. Retrieved 2006-12-20.
^Talbot, Christopher J.; Jackson, Martin P. A. (1987). "Salt Tectonics". Scientific American. 257 (2): 70–79. Bibcode:1987SciAm.257b..70T. doi:10.1038/scientificamerican0887-70. ISSN 0036-8733. JSTOR 24979445.
A diapir (/ˈdaɪ.əpɪər/; from French diapir [djapiʁ], from Ancient Greek διαπειραίνω (diapeiraínō) 'to pierce through') is a type of intrusion in which...
evaporite minerals) intrudes into overlying rocks in a process known as diapirism. Salt domes can have unique surface and subsurface structures, and they...
of relatively buoyant magma in large masses called plutonic diapirs. Because the diapirs are liquified and very hot, they tend to rise through the surrounding...
mechanisms are thought to be important: Stokes diapir Fracture propagation Of these two mechanisms, Stokes diapirism has been favoured for many years in the...
fractures that transport the melt in conduits. For bulk transportation, diapirs carry a large volume of melt and ascent through the crust. When magma stops...
Erin Field westward is a strongly folded anticline associated with shale diapirism, which extends west southwestward to the Pedernales Field in southeast...
evaporite deposits of Jurassic age. These salt deposits formed salt dome diapirs, and are found in East Texas along the Gulf coast. East Texas outcrops...
away from plate boundaries has been postulated to arise from upwelling diapirs from the core–mantle boundary, 3,000 kilometers (1,900 mi) deep within...
ocean as a result of a rising body of soft rock in the mantle known as a diapir, located under Barbados, pushing it upwards. This process is still happening...
will continue to move away from them into the ridges. At a late stage, diapirs tend to initiate at the junctions between ridges, their growth fed by movement...
Hallstatt evaporite body (Northern 5 Calcareous Alps, Austria): a compressive diapir 6 superposed by strike-slip shear?, in Journal of Structural Geology". ResearchGate...
access due to the remoteness of the area. It was originally thought to be a diapir (salt dome); an impact origin was first proposed in 1985., The depression...
resonance with Umbriel. Extensional processes associated with upwelling diapirs are the likely origin of Miranda's 'racetrack'-like coronae. Ariel is thought...
(9th-15th century) Salt evaporation ponds and Diapir - Salt extraction since the Ancient Rome times. The Diapir is the biggest one in Europe. San Cosme y...
region with an annular drainage pattern possibly corresponding to a mud diapir or astrobleme exists near Sant'Angelo in Pontano. As of 2023, according...
create larger veins. Under the influence of buoyancy, the melt rises. Diapirs may also form in non-silicate bodies, playing a similar role in moving...
linked with the Tazoult Ridge, both showcasing significant evidence of diapirism during the late Lias period in the central Atlas region. The Amezraï Formation...
Qeshm Island UNESCO Global Geopark. The cave is formed within a large salt diapir formed of a succession of strata which dates from the late Proterozoic....
one substance moves up through another denser substance, it is called a diapir. So, it seems that large masses of ice have pushed up layers of rock into...
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