Local Geology - Redondo Beach, CA
Posted by: 
bluesnote
N 33° 49.150 W 118° 23.400
11S E 371360 N 3742974
A geologic sign that talks about the history of the land formations here. It has since been turned into an earthcache.
Waymark Code: WMR7ZQ
Location: California, United States
Date Posted: 05/24/2016
Views: 2
The sign says, "Looking north along the coast from here, you can see the entire Santa Monica Bay dune system. Scientists believe two major events snapped these dunes. First, during the last glacial period that peaked around 20,000 years ago, low sea level exposed the floor of Santa Monica Bay. Streams flowing across the exposed sea floor deposited sediment that was blown onshore by winds to form extensive dunes. Then, as the sea rose about 5,000 years ago, fresh sand was blown onto these older dunes forming the recent sand dunes.
To the south, the staircase of cliffs and wave cut platforms of the Palos Verdes Peninsula was created by changing sea levels that occurred long before the dune building began."
Group that erected the marker: N/A
Address of where the marker is located. Approximate if necessary:
Redondo Beach, CA
URL of a web site with more information about the history mentioned on the sign: Not listed
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Visit Instructions:
Take a picture of the marker, preferably including yourself or your GPSr in the photo. A very detailed description of your visit may be substituted for a photo. In any case please provide a description of your visit. A description of only "Visited" or "Saw it while on vacation" by anyone other than the person creating the waymark may be deleted by the waymark owner or the category officers.