The bluffs along the seacoast in south Orange County consist of an easily erodible material, something like a sort of soft sandstone. At least to my eye, the patterns of erosion due to rain and wind are unlike erosion due to waves.
What has always puzzled me is the first few meters of height look like wave-erosion. Most places along the beach, waves do not reach the bluffs. Given the easily erodible material, seems that rain-erosion would erase past wave-erosion over time.
About the time scale, this is outside my area of knowledge.
Still, a sea level two meters higher a mere four thousand years back, would seem to fit with what I see.
The bluffs along the seacoast in south Orange County consist of an easily erodible material, something like a sort of soft sandstone. At least to my eye, the patterns of erosion due to rain and wind are unlike erosion due to waves.
What has always puzzled me is the first few meters of height look like wave-erosion. Most places along the beach, waves do not reach the bluffs. Given the easily erodible material, seems that rain-erosion would erase past wave-erosion over time.
About the time scale, this is outside my area of knowledge.
Still, a sea level two meters higher a mere four thousand years back, would seem to fit with what I see.