diapir

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diapir

[′dī·ə‚pir]
(geology)
A dome or anticlinal fold in which a mobile plastic core has ruptured the more brittle overlying rock. Also known as diapiric fold; piercement dome; piercing fold.
References in periodicals archive ?
Because the type section was deposited on the flank of the Minudie Anticline, it may have occupied a subtle paleotopographic high that was inundated only by the largest flooding events or that was syndepositionally uplifted by diapirism as fluvial sediment prograded into the basin (Coleman 1988; Davison et al.
In the Bicorp Basin (Valencia province), where Miocene sedimentation was controlled by the diapirism of Triassic evaporites, Anadon et al.
Synplutonic deformation may be related to diapirism and/or synplutonic tectonic activity, and is indicated by (1) high-T deformation microstructures within igneous minerals (Laffance et al.
We believe that the MZAMV developed and evolved in response to the continued compression within the Makran Acrretionary Belt, which in turn is a response of the subduction process; mud diapirism has also been an ongoing phenomenon since Pleistocene or even earlier.
The height of the outcrop above the present day sea level was mainly caused by a tectonic uplift given the significance of the muddy diapirism in the region.
The archipelago is an holocenic reef complex with terraces, fringing reefs and bank reefs, formed from the interaction between mud diapirism, relative sea level changes and reef growth.
Back blind thrusts facing northward and diapirism in Eocene sequence is reason for the overturning of northern limb of Spina Banda dome.
We suggest that the MZAMV developed, and evolved in response to the continued compression within the Makran Acrretionary Belt, which in turn is a response of the subduction process and that mud diapirism has been an ongoing phenomena since Pleistocene or even earlier times.
The interpretation of structural data manifested overprinting of extensional tectonics due to salt diapirism and was displayed by a number of normal faults.