Fig. 3: Expanded view of interval 17–15.2 Ma at West Pacific Warm Pool Site U1490.
From: Re-organization of Pacific overturning circulation across the Miocene Climate Optimum
a Benthic foraminifer δ13C (Supplementary Data File 1). Monterey Excursion carbon isotope maxima82,91 are labeled CM1, 2, 3, 4a. b Weight percentage of >63 µm coarse fraction residues (exclusively composed of complete or fragmented carbonate foraminifer tests) as an indicator for carbonate dissolution (Supplementary Data File 1). c Wavelet power of >63 µm coarse fraction residues. Note dominance of 41 kyr (obliquity) and 100 kyr (eccentricity) periodicities (indicated by dashed black lines) and change in amplitude variability across Mi2 glaciation event11,40,41,42. d Raw and 9-point moving average X-ray fluorescence scanner-derived Log(Si/Ti) as an indicator of biogenic silicate (opal) (Supplementary Data File 5). e Benthic foraminifer δ18O (Supplementary Data File 1). Note δ18O maximum (indicated by blue arrow) and ~0.2‰ increase in δ18O mean following Mi2 glaciation event11,40,41,42 (shaded light blue). f Eccentricity and eccentricity-obliquity (tilt) composite (ET) from La0443.
