Fig. 3: Estimated apparent thermal age and comparison with the plate age.
From: Asymmetric seafloor depth across the Juan de Fuca Ridge caused by lithospheric heating
a Apparent thermal age estimated from the MCMC inversion. White lines are the 1 Ma contours. b Thermal age minus plate age, normalized by thermal age uncertainty. Warm colors mean the thermal age is younger than the plate age and the lithosphere is hotter than expected. Cool colors mean the thermal age is older than the plate age and a colder lithosphere is expected. Red dashed rectangle delineates the region used in (c). c Variations of the plate age and thermal age with distance across the northern part of the JdF Ridge. Error bars are the estimated uncertainties in each bin, see “Methods” for details. The longer thermal age error bars to the east of the JdF Ridge than to the west is due to the less sensitivity of surface wave observation to the change of thermal age as age increases.
