Drought events seriously impact our society, yet the evolution of extreme drought events (megadroughts), and their mechanism(s), remain largely unknown. Here we used R i/b ratio and BIT, two
Oxygen and carbon isotopic ratios were measured from Maestrichtian benthic and planktonic foraminifer species and bulk carbonate samples from ODP Sites 689 and 690, drilled on the Maud Rise during Leg
