TY - JOUR TI - Late middle to late Miocene paleoceanography at Rockall Plateau site 982 DO - https://doi.org/doi:10.7282/t3-fpdf-st48 PY - 2020 AB - The Middle and Late Miocene were associated with a global cooling trend, with the development of a permanent East Antarctic Ice Sheet during the Middle Miocene Climate Transition (MMCT; 14.8-12.8 Ma), increased influence of Northern Component Water at ~12 Ma, and a more rapid rate of cooling during Late Miocene Cooling (LMC; ~8-6 Ma). Possible causes of these variable sea surface temperatures (SSTs) throughout the Miocene are changes in the amount of carbon dioxide in the atmosphere (pCO2) and shifts in the magnitude of meridional heat transport via Atlantic Meridional Ocean Circulation (AMOC). Biomarker temperature proxies (Uk’37 and TEX86) from the North Atlantic have previously been used to track Miocene SST variability. I employ an analysis of foraminiferal stable isotope ratios from the late Middle Miocene to Early Pliocene at Ocean Drilling Program (ODP) Site 982 Hole B (57.52°N), with the goal of corroborating biomarker SST measurements from ~13 to 4.5 Ma. My data indeed corroborate the cooling trends shown by biomarker data from recent studies on samples from Site 982; however, water temperature values computed from stable isotope values were, on average, cooler than those estimated by alkenone temperature records, likely due to differing biology of planktonic foraminifera and alkenone-producing coccolithophores. KW - Geological Sciences KW - Foraminifera KW - Paleoceanography -- Rockall Trough LA - English ER -