Reliable carbonate carbon isotopes (δ13Ccarb) can reflect variations in global carbon cycling, and thus the paleoclimate and paleoceanographic conditions. However, significant depositional hiatus in low-latitude areas occurred during the late Pennsylvanian to early Cisuralian.
Click here for original story, Sedimentary facies and carbon isotopes from South China shed light on late Paleozoic icehouse-to-greenhouse transition
Source: Phys.org