Barbados 80,000 and 100,000 year interstadials

Barbados 80,000 and 100,000 year interstadials

 

E-K. Potter, T. Esat, K. Lambeck and M.T. McCulloch

Dating of coral outcrops at Barbados was carried out on the two major sea-level high stands immediately following the Last Intergalical. The data show a surprisingly long duration for both events extending up to over 10,000 years. The nominal 80 ka interstadial appears to be composed of two sea-level high-stands separated by approximately 3000 to 4000 years. There is a hint of a similar structure for the 100 ka interstadial. Multiple sea-level high-stands point to unexpected climate variability during the late part of marine Isotope Sub-Stage 5, reminiscent of climate instability observed for the last glacial period.