Multistage lithospheric drips control active basin formation within an uplifting orogenic plateau

A. Julia Andersen (), Oguz Hakan Göğüş, Russell N. Pysklywec, Ebru Şengül Uluocak and Tasca Santimano
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A. Julia Andersen: University of Toronto
Oguz Hakan Göğüş: Eurasian Institute of Earth Sciences
Russell N. Pysklywec: University of Toronto
Ebru Şengül Uluocak: Çanakkale Onsekiz Mart University
Tasca Santimano: University of Toronto

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract According to GNSS/INSAR measurements, the Konya Basin in Central Anatolia is undergoing rapid subsidence within an uplifting orogenic plateau. Further, geophysical studies reveal thickened crust under the basin and a fast seismic wave speed anomaly in the underlying mantle, in addition to a localised depression in calculated residual topography (down to 280 m) over the Konya Basin, based on gravity-topography considerations. Using scaled laboratory (analogue) experiments we show that the active formation of the Konya Basin may be accounted for by the descent of a mantle lithospheric drip causing local circular-shaped surface subsidence. We interpret that the Konya Basin is developing through a secondary drip pulse that is contemporaneous with broad plateau uplift caused by a larger-scale lithospheric drip since the Miocene. The research reveals that basin evolution and plateau uplift may be linked in a multistage process of lithospheric removal during episodic development of orogenic systems.

Date: 2024
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DOI: 10.1038/s41467-024-52126-7

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