Supplemental Material: Stress in the tropics? Impact of a latitudinal seawater δ¹⁸O gradient on Middle Jurassic temperature reconstructions at low latitudes

Abstract

Geochemical datasets and additional information on materials, methodology, and results.<br>

Stable isotopes (δ 13 C, δ 18 O) and element ratios (Mg/Ca, Sr/Ca) of Jurassic belemnites, bivalves and brachiopods from the Neuquén Basin (Argentina): challenges and opportunities for palaeoenvironmental reconstructions

“…However, the Neuquén Basin was situated at a palaeolatitude of ca. 40° S throughout most of the Jurassic (Besse and Courtillot, 2002;Torsvik et al, 2012;van Hinsbergen et al, 2015), which corresponds approximately to the point where the latitudinal δ 18 Osea gradient could have reached the value −1 ‰ (compare Alberti et al, 2020). Thus, using this value in the equation of Anderson and Arthur (1983) leads to the reconstruction of reasonable water temperatures for the studied well-preserved belemnites, as well as the oyster and brachiopod shells of the southern sections.…”