sed_C14

 PI:              Bob Anderson
 of:              Lamont-Doherty Earth Observatory
 dataset:         C14 dates from sediment cores
 project/cruise:  AESOPS/NBP98-2 Ross Sea Benthic Processes Cruise
 ship:            R/V Nathaniel B. Palmer

 Note:  Carbon-14 age dating was performed at National Ocean Sciences
        Accelerator Mass Spectrometry Facility (NOSAMS) in Woods Hole, MA
       

 Parameters     Description                                 Units

 event          event number from event log
 sta            station number from event log
 lat            latitude, minus value means South           decimal degrees
 lon            longitude, minus value means West           decimal degrees
 core_type      type of coring instrument used,
                 where GC = gravity core
                 where PC = piston core
                 where MC = multi core
 depth_w        ocean depth                                 meters
 depth_core     depth in core, mid-point of interval        centimeters
                 sampled
 depth_core_sd  depth in core, standard deviation           centimeters
 C_source       sample carbon source, where:
                 CaCO3_b     = bulk CaCO3
                 sed_cf      = sediment, coarse fraction
                 foram       = Foraminifera
 dC13           delta C13                                   per mil (ppt)
 Fm             fraction modern - a standard parameter
                 reported by AMS labs.  It is a unitless
                 parameter.
 Fm_err         fraction modern error
 C14_age        carbon-14 age dating (uncorrected)          years
 C14_age_err    carbon-14 age error, +/- one sigma          years