@misc{10481/107496,
year = {2025},
month = {9},
url = {https://hdl.handle.net/10481/107496},
abstract = {Reconstructing past climates in hot, arid regions is challenging due to scarce archives and
proxies. Clumped isotopes (Δ47) on sabkha calcite-aragonite minerals might alleviate this situation. We apply the Δ47 technique to modern and middle Miocene sabkha samples yielding
temperatures of 25.2 ± 2.8 °C to 32.1 ± 3.0 °C. Results show that sabkha calcite-aragonite
minerals mainly reflect summer half-year temperatures, when most precipitation occurs.
Reconstructed δ18Owater (SMOW) (SMOW—standard mean ocean water) values (3.2 ± 1.0‰ and
5.2 ± 1.2‰) scale with the intensity of evaporation in these intertidal, supratidal, and lagoonal
settings. Despite higher middle Miocene atmospheric CO2, reconstructed sabkha temperatures are similar to modern values, suggesting a low climate sensitivity. Thus, sabkha Δ47 is
a valuable tool for paleotemperature reconstructions in low-latitudes continental settings.},
organization = {Junta de Andalucía – Consejería de Universidad, Investigación e Innovación (Proyecto 21.00020)},
organization = {MCIN/AEI/FSE+ (ayuda RYC2023-045297-I)},
organization = {German Research Foundation (DFG, proyecto número 527307807)},
publisher = {Geological Society of America},
title = {Limited warming of middle Miocene arid low-latitude climates: Application of clumped isotopes in sabkha environments},
doi = {10.1130/G53550.1},
author = {Marchegiano, Marta and Ziegler, Martin and Bialik, Or M. and De Vleeschouwer, David},
}