Control of regional sea level by surface uplift and subsidence caused by magmatic underplating of Earth's crust

Sedimentation and Lithofacies Paleogeography in Southwestern China Before and After the Emeishan Flood Volcanism: New Insights into Surface Response to Mantle Plume Activity

“…The relief between the inner and intermediateouter zones has to be of the same order of thickness in order for the inner zone to be in a state of erosion while the eroded materials accumulated in the intermediate-outer zones. In this sense, the magnitude of uplift due to underplating is about 2000 m. McKenzie (1984) and MacLennan and Lovell (2002) argued that surface uplift is one-tenth of the thickness of magmatic underplating layer. Crustal elevation of 2000 m therefore implies an underplating layer 20 km in depth.…”

Paleoerosion Rates from Cosmogenic 10Be in a 1.3 Ma Terrace Sequence: Response of the River Meuse to Changes in Climate and Rock Uplift

“…Solidification of the magma subsequent to emplacement is thought to cause contraction of the underplated material. Maclennan and Lovell (2002) have calculated that surface subsidence associated with this contraction is equal to approximately half the original uplift and takes places within about 0.1 Ma of injection of the magma. We propose that volcanic activity of the Eifel field post 0.7 Ma was caused by magmatic underplating around 0.7 Ma and that rapid and distributed incision of all major streams in the region was driven by dome-shaped uplift as- rate p [d O Ϫ 0.9] been arbitrarily chosen for oxygen data to translate into hypothetical model erosion rates that fit the measured data.…”

A moderate melting model for the Vøring margin (Norway) based on structural observations and a thermo-kinematical modelling: Implication for the meaning of the lower crustal bodies

“…Strong evidences of underplating occurring during the rifting comes from petrological indications of both fractionation at lower crustal pressures, temperatures, and crustal contamination occurring during the melt migration into shallow or deep magma chambers (Cox, 1993). Dynamic evidences of underplating are often proposed to explain surface uplift, massive sand influx and sea level variations and the low subsidence rate that occurs during and after the breakup along the volcanic margins and their adjacent areas (Maclennan and Lovell, 2002).…”