Sentences with phrase «ephemeral deep lakes»

These measures of climate turnover substantially improve model fit, indicating that the occurrence of widespread ephemeral deep lakes is a pulsed system influenced both by regional and global changes.

The major step-wise expansion in brain size around 1.9 Ma when Homo appeared was coeval with the occurrence of ephemeral deep lakes.

Not exact matches

The lake variability index was calculated by collating the published geological evidence for the appearance of either deep ephemeral or shallow alkaline lakes in seven major Basins in 50 kyrs sections over the last 5 Myrs [15], [17], [23]--[27], [34]--[37].

Figure 1 shows a compilation of all the current known occurrences of both ephemeral deep freshwater and shallow alkaline lakes in the EARS for the last 5 Myrs.

As significant hominin brain expansion occurred at ∼ 1.8 Ma coeval with occurrence of massive ephemeral deep - water lakes, while subsequent expansions are associated with extreme dry periods.

During this period, ephemeral deep - freshwater lakes appeared along the whole length of the EARS, fundamentally changing the local environment.