Dual-Scale Weathering
Posted in Science on 08/19/2009 08:33 pm by Mika
The landscape of rounded boulders at Joshua Tree Park, California, are the legacy of weathered bedrock. As overlaying material is eroded away, the release in pressure leads to exfoliation — shedding the crust of weathered rock. On a much shorter timescale, after early farmers built Barker Dam, the changing water level stained the surrounding rocks with a record of climatic variation.
