Fig. 5: Geological δ7Li records, climate and weathering flux.
From: Hydrological control of river and seawater lithium isotopes
(a) Silicate weathering flux (grey solid line)4. (b) Relative strength of weathering feedback, with dark and light blue shadings indicating low and high atmospheric CO2 scenarios4, respectively. (c) Deep ocean temperature (dark green)73. (d) Seawater δ7Li (yellow) evolution during the Cenozoic6. (e) Continental mean annual precipitation from the Pacific (green) and Atlantic (grey and light purple) sides of Eurasia75. During the Cenozoic cooling, increasing δ7Li coincides with decreasing precipitation recorded at the two sides of Eurasia (e) and are likely coupled with a stable or decreased silicate weathering rate (a). Shadings in a and b indicate 1σ uncertainty, and in e show mean annual range of precipitation.
