Fig. 2: Variation of Nazca/South America convergence rate and azimuth at different latitudes along the Andean trench for the last 30 Million years. | Nature Communications

Fig. 2: Variation of Nazca/South America convergence rate and azimuth at different latitudes along the Andean trench for the last 30 Million years.

From: Growth of Neogene Andes linked to changes in plate convergence using high-resolution kinematic models

Fig. 2

A Convergence rate at 20°S from the study of Somoza and Ghidella (2012; ref. 17) in red and our study in blue. Convergence is inferred from an ensemble of one million samples of the Euler vectors (see Methods) drawn from the nominal values and associated covariances. Solid lines show the ensemble average, while polygons show the one sigma (∼68%) and two sigma (∼95%) confidence intervals (as shown in the legend of the figure). B Azimuth of convergence at 20°S for the same reconstructions shown in A. C, D Same as A, B, but calculated at 30°S. E, F Same as A, B, but calculated at 40°S. Thin blue line is for an alternative model that includes the relative motion between West and East Antarctica40,41. Green lines show the present-day rate and azimuth of convergence derived from various GPS-measured velocities72,73,74.

Back to article page