The 13,000-Year-Old Man Found On A California Island — And The Dating Test That Changed The Story Of America’s First Migration
For the Channel Islands, the consequences of sea-level rise were transformative.
The vast lowlands of Santarosae — the wide, flat areas that would have been most suitable for human habitation, closest to the water, richest in the transitional habitats that human communities prefer — were progressively inundated.
As the sea rose, the habitable area of Santarosae shrank.
People living near the old shoreline would have had to move upslope as the water advanced.
Eventually, the water level reached the low points that connected the four modern islands, and Santarosae began to break apart.