Penultimate deglacial warming across the Mediterranean Sea revealed by clumped isotopes in foraminifera.

ABSTRACT: The variability of seawater temperature through time is a critical measure of climate change, yet its reconstruction remains problematic in many regions. Mg/Ca and oxygen isotope (δ ¹⁸O_C) measurements in foraminiferal carbonate shells can be combined to reconstruct seawater temperature and δ ¹⁸O (δ ¹⁸O_SW). The latter is a measure of changes in local hydrology (e.g., precipitation/evaporation, freshwater inputs) and global ice volume. But diagenetic processes may affect foraminiferal Mg/Ca. This restricts its potential in many places, including the Mediterranean Sea, a strategic region for deciphering global climate and sea-level changes. High alkalinity/salinity conditions especially bias Mg/Ca temperatures in the eastern Mediterranean

SUBMITTER: Rodriguez-Sanz L 

PROVIDER: S-EPMC5707372 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature