Core LEDC10-1 (June 2010) Lake Elsinore, CA
discontinuous laminae
mottling
black “organic” blebs
shells (gastropods)
Variably Low
1200
1400
1600
1800
1800
2000
2000
2200
Organic-Rich Sediment Unit
1600
large limestone fragment
wood/seeds charcoal
2200 pending 14C samples
2400
2400 OSL date pending OSL date pending
2600
2600
2800
2800
3000
3000 0
1 2 Mass Magnetic Suceptibility (estimate of clastic flux)
3
Silty Sand Unit
Depth (cm)
2010 core
1400
Fluctuating
8410 calendar years before present (cyBP)
9640 cyBP
2003 core
Our goal for the 2nd year - to collect a long sediment core for paleoclimatic research from Lake Elsinore - was a resounding success (see stratigraphic column at the right). Year 3 will consist of detailed physical, chemical, biological, and chronological sediment analyses aimed at deciphering the climate record held within the sediments of Lake Elsinore. One BSc and two MSc projects (all women scientists) are in progress using data obtained through this ACS-PRF grant.
Lake “State”
1000
1200
Matthew E. Kirby, Cal-State Fullerton, Department of Geological Sciences
Lake Elsinore, CA with 2003 and 2010 sediment core site (Google Earth image).
undefined sand sizes
Sustained Highstand
1000
variable thickness laminae (brightness = clarity)
Variably High
A Combined Geophysical and Lithostratigraphical Investigation of a Young Pull-Apart Basin: Evaluating the Relationship Between Basin Sedimentation, LateQuaternary Climate Change, and Tectonics (Lake Elsinore, Southern California)
est. 30,000 cyBP
10
20
30 40 50 60 Percent Water (estimate of grain size)
70
