Level

LGM Chronozone

Late Holocene Chronozone

1

Chronologic control based either on annually counted layers extending through the LGM chronozone, or two radiometric dates within the interval, such as U/Th dates or reservoircorrected ¹⁴C-yr dates adjusted to the calendar scale using the CALIB software (Stuiver et al., 1998)

0–2 ka: Chronologic control based either on annually counted layers covering the last 2 ky, or one radiometric date (suchas U/Th  dates or reservoir-corrected ¹⁴C-yr dates converted into calendar age) within the interval 0–2 ka

2

Chronologic control based on two bracketing radiometric dates of any kind within the interval 12–30 ka (i.e., within marine oxygen-isotope stage 2), or by correlation of nonradiometric data to similar regional records that have been dated to matchth e level 1 protocol (for example, δ¹⁸O stratigraphy)

0–4 ka: Chronologic control based on one radiometric date of any kind within the interval 0–4 ka, or stained benthic foraminifera with sedimentation rate higher than 5 cm/ky

3

Chronologic control based on other stratigraphic constraints (for example, a regional lithologic index such as %CaCO3) that are correlated to similar records dated elsewhere to match the level 2 protocol

0–4 ka: Chronologic control based on one radiometric date of any kind within the interval 4–8 ka or specific stratigraphic control (for e.g., % G. hirsuta left coiling) indicating that the sample belongs to the interval 0–4 ka

4

No stratigraphic control

0–4 ka: Chronologic control based on other stratigraphic constraints (for e.g., δ¹⁸O stratigraphy, or a regional lithologic index such as %CaCO₃) indicating that the sample belongs to the interval 0–4 ka