San Diego County California Marine Terrace Quaternary Aminostratigraphy Kern, J.P.; Rockwell, T.K.; Wehmiller, J.F.; Kennedy, G.L. Kern, J.P. Rockwell, T.K. Wehmiller, J.F. Kennedy, G.L. earth science/paleoclimate/others (SDSU-2523>LATITUDE 32.6645>LONGITUDE -117.24254) A series of 16 marine terraces record Quaternary paleogeography and tectonic history for the coastal region of San Diego County. Radiometric ages and aminostratigraphy are used, in combination with terrace elevations, to derive average uplift rates and regional correlation of shoreline features. Racemization (AAR) data for multiple taxa at 33 localities are reported here as presented in the published summary and also as raw data for all samples. STUDY NOTES: Extent of Racemization (D/L) data for mollusks from Pleistocene marine terrace deposits along the California coast, San Diego area. Samples collected by numerous investigators, primarily J.P. Kern and T.K. Rockwell, San Diego State University, K.R. Lajoie (US Geological Survey), G.L. Kennedy (USGS and Los Angeles County Museum of Natural History), and J.F. Wehmiller. Some samples from existing USGS collections also included. Samples collected and prepared between 1975 and 1983. Samples prepared and analyzed at the University of Delaware, Newark DE, Lab PI John F. Wehmiller. Some samples also collected and analyzed by J.L. Bada (UC San Diego) and colleagues. Locality ID = formal or informal name used by collectors and maintained in U Delaware database Site name = similar to locality ID; refers to designations in Kern and Rockwell., 1992 Terrace names from Kern and Rockwell, 1992 All collection sites are located within the area of the San Diego 1:100,000 US Geological Survey Topographic Map. Pretreatment: Fragments cut from shell valves; surface cleaning with dental tools; dilute HCl and distilled water wash; air dry AA fraction="amino fraction" THAA = total hydrolyzable amino acids; FAA = free amino acids (zero hydrolysis time) Hydrolysis procedure: 6N HCl 22 hours 105 deg C (for THAA only) Bleach: No Instrumental programming: GC temperature program; HPLC buffer gradient Blank corrections: no Response factors: no D/L values reported as peak height ratios Lab Code Sample ID = identity of specific shell analyzed (samples analyzed at UCSD given identity for use in Delaware database) Analytical method: GC = gas chromatography, used for multiple amino acids; HPLC used for determination of A/I values Subsample ID = usually the same as sample ID; repeat fragments of same shell will have unique identification Ratio type = Peak Height ratios used for all results from GC; peak height ratios assumed for all results for HPLC D/L values are reported as the means of multiple chromatograms, usually at least 3. For GC results, in most cases sample derivatives were analyzed using more than one GC column. Samples selected for analysis were chosen because they appeared to be the most robust specimens among those available. In most cases, samples were not whole valves. Abraded, rounded, or chalky fragments were avoided where possible, and multiple shells from each collection were analyzed in almost all cases. Abbreviations: A/I D-alloisoleucine/L-isoleucine Ala Alanine Asx Aspartic acid and asparagine Glx Glutamic acid and glutamine Leu Leucine Phe Phenylalanine Pro Proline Val Valine P = Protothaca S = Saxidomus M = Macoma C = Chione O = Ostrea T = Tivela My = Mytilus SDSU San Diego State University SDSNH San Diego Society of Natural History LACM Los Angeles County Museum of Natural History USGS US Geological Survey WCC Woodward Clyde collections (sent to Delaware for analysis) UDEL University of Delaware UCSC University of California, San Diego In the "Published data summaries", mean values and number of samples may not correspond exactly to the raw data reported on the "Individual sample results" page because of the way results were grouped by Kern and Rockwell (1992), or because of the way analytical results have been re-evaluated. Conclusions in the original publication are not affected. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Kern, J.P. Investigator : Rockwell, T.K. Investigator : Wehmiller, J.F. Investigator : Kennedy, G.L. 2012-04-20 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/12903 https://www1.ncdc.noaa.gov/pub/data/paleo/aar/kern1992sandiego/kern1992sandiego.txt https://www1.ncdc.noaa.gov/pub/data/paleo/aar/kern1992sandiego/kern1992sandiego.xls https://www1.ncdc.noaa.gov/pub/data/paleo/aar/kern1992sandiego/kern1992sandiego.txt https://www1.ncdc.noaa.gov/pub/data/paleo/aar/kern1992sandiego/kern1992sandiego.xls English https://www.ncdc.noaa.gov/paleo/study/12903 https://www1.ncdc.noaa.gov/pub/data/paleo/aar/kern1992sandiego/kern1992sandiego.txt https://www1.ncdc.noaa.gov/pub/data/paleo/aar/kern1992sandiego/kern1992sandiego.xls Kern, J. P. and T. K. Rockwell, 1992. Chronology and deformation of Quaternary marine shorelines, San Diego County, California. IN: Quaternary Coasts of the United States, Marine and Lacustrine Systems. C.H. Fletcher III and J.F. Wehmiller, editors SEPM (Society for Sedimentary Geology) Special Publication 48, pp. 377-382. START YEAR: 900000 cal yr BP * END YEAR: 100 cal yr BP -117.24254 32.6645 -117.24254 32.6645