Sidney Hemming is an analytical geochemist known for her work documenting Earth's history through analysis of sediments and sedimentary rocks.
In 2018, Hemming was named a fellow of the American Geophysical Union who cited her "for the development of geochemical and isotopic tracers for sediments to reveal geological processes and events through Earth's history".
[4] Hemming's research documents Earth's historical changes through the analysis of chemical signals preserved in sedimentary rocks and sediments.
She uses geochronology to obtain age estimates of events occurring in the ocean thereby tracking changes in water circulation, winds, and glaciers.
[9] In California, her research on past climate conditions at Mono Lake[10][11] revealed chemical signatures in the sediments recorded the Laschamp event, a global geomagnetic shift.