The record that dates the onset and carries the platinum anomaly; Green and colleagues (2025) argue the spike is volcanic.
NOAA, 2013. Public domain
Copies 4
PhotoNOAA · commons.wikimedia.org · Public domain (US government work)Primary source: File:GISP2 1855m ice core layers.png1 step from the original
PictureNOAA · commons.wikimedia.org · Public domain (US government work)1 step from the original
DatasetRichard Alley (NOAA World Data Service for Paleoclimatology) · ncei.noaa.gov · public-domainPrimary source: GISP2 Ice Core Temperature and Accumulation Data (IGBP PAGES/WDCA Data Contribution Series 2004-013)2 steps from the original
DocumentMichail Petaev and colleagues · doi.org · 2013-07-22 · publisherPrimary source: Large Pt anomaly in the Greenland ice core points to a cataclysm at the onset of Younger Dryas2 steps from the original
Where it was made
GISP2 drill site, Summit, Greenland · Ice-core drill site
Sources 1
Cite it
Mysteries Department. (2026). The GISP2 ice core [Artifact ART0D51XXAE2580]. https://mysteriesdept.com/r/ART0D51XXAE2580
@misc{mysteriesdept_art0d51xxae2580,
title = {The GISP2 ice core},
author = {{Mysteries Department}},
year = {2026},
note = {Artifact, catalog key ART0D51XXAE2580},
url = {https://mysteriesdept.com/r/ART0D51XXAE2580}
}