Heavy minerals, grain size distribution, and ice-rafted debris in the Greenland Sea during 44 to 30 Ma

The widely accepted age estimate for the onset of glaciation in the Northern Hemisphere ranges between 2 and 15 million years ago (Ma). However, recent studies indicate the date for glacial onset may be significantly older. We report the presence of ice-rafted debris (IRD) in ~44 to 30 Ma sediments from the Greenland Sea, evidence for glaciation in the North Atlantic during the Middle Eocene to Early Oligocene. Detailed sedimentological evidence indicates that glaciers extended to sea level in the region, allowing icebergs to be produced. IRD may have been sourced from tidewater glaciers, small ice caps, and/or a continental ice sheet.

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Cite this as

Tripati, Aradhna K, Eagle, Robert A, Morton, Andrew C, Dowdeswell, Julian A, Atkinson, Katie L, Bahé, Yannick, Dawber, Caroline F, Khadun, Emma, Shaw, Ruth M H, Shorttle, Oliver, Thanabalasundaram, Lavaniya (2008). Dataset: Heavy minerals, grain size distribution, and ice-rafted debris in the Greenland Sea during 44 to 30 Ma. https://doi.org/10.1594/PANGAEA.707156

DOI retrieved: 2008

Additional Info

Field Value
Imported on November 29, 2024
Last update November 29, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.707156
Author Tripati, Aradhna K
Given Name Aradhna K
Family Name Tripati
More Authors
Eagle, Robert A
Morton, Andrew C
Dowdeswell, Julian A
Atkinson, Katie L
Bahé, Yannick
Dawber, Caroline F
Khadun, Emma
Shaw, Ruth M H
Shorttle, Oliver
Thanabalasundaram, Lavaniya
Source Creation 2008
Publication Year 2008
Resource Type application/zip - filename: Tripati_2008
Subject Areas
Name: Geophysics

Related Identifiers
Title: Evidence for glaciation in the Northern Hemisphere back to 44 Ma from ice-rafted debris in the Greenland Sea
Identifier: https://doi.org/10.1016/j.epsl.2007.09.045
Type: DOI
Relation: IsSupplementTo
Year: 2008
Source: Earth and Planetary Science Letters
Authors: Tripati Aradhna K , Eagle Robert A , Morton Andrew C , Dowdeswell Julian A , Atkinson Katie L , Bahé Yannick , Dawber Caroline F , Khadun Emma , Shaw Ruth M H , Shorttle Oliver , Thanabalasundaram Lavaniya .