Central Gulf of California Records for the Past 55,000 years

Figure 1. Central Gulf of California records for the past 55,000 years of biogenic silica and environmentally-sensitive silicoflagellates compared with the GISP II (Greenland) ice core oxygen isotope record and the speleothem cave oxygen isotope record from Fort Stanton, New Mexico.  Color shading: Holocene = yellow; Heinrich events = gray; periods of possible enhanced monsoon pulses during warm interstadial = light green.  The figure demonstrates the sensitivity of both Gulf of California surface water conditions and southwestern US cave isotopes (precipitation) to Heinrich events and warm interstadial events. Modified from Barron et al. (2012): https://doi.org/10.1029/2011PA002235