The Aktau succession is located at 44.03°N and 79.30°E in the Ili Basin, south-east Kazakhstan. The dataset contains measurement results from the Middle to early Late Miocene part of the succession (total height: 372 m, lowermost sample: 0.29 m, uppermost sample: 370.94 m). Stable carbon and oxygen istopes and CaSO₄ content were derived from bulk rock measurements. The CaSO₄ content was determined by microwave digestions and ICP-OES analysis. The laser ablation U-Pb data was aquired from thin sections in order to obtain radiometric ages of carbonates along the Aktau succession.

Supplement to: Frisch, Konstantin; Voigt, Silke; Verestek, Verena; Appel, Erwin; Albert, Richard; Gerdes, Axel; Arndt, Iris; Raddatz, Jacek; Voigt, Thomas; Weber, Yuki; Batenburg, Sietske J (2019): Long‐Period Astronomical Forcing of Westerlies' Strength in Central Asia During Miocene Climate Cooling. Paleoceanography and Paleoclimatology, 34(11), 1784-1806