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...
Main Authors: | , , , , , , , , , , |
---|---|
Format: | Other/Unknown Material |
Language: | English |
Published: |
PANGAEA
2008
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.707156 https://doi.org/10.1594/PANGAEA.707156 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.707156 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.707156 2024-09-15T18:08:51+00:00 Heavy minerals, grain size distribution, and ice-rafted debris in the Greenland Sea during 44 to 30 Ma 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 LATITUDE: 75.489200 * LONGITUDE: 6.946800 * DATE/TIME START: 1993-09-16T12:17:00 * DATE/TIME END: 1993-09-20T20:30:00 2008 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.707156 https://doi.org/10.1594/PANGAEA.707156 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.707156 https://doi.org/10.1594/PANGAEA.707156 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: 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): Evidence for glaciation in the Northern Hemisphere back to 44 Ma from ice-rafted debris in the Greenland Sea. Earth and Planetary Science Letters, 265(1-2), 112-122, https://doi.org/10.1016/j.epsl.2007.09.045 151-913B DRILL Drilling/drill rig Joides Resolution Leg151 North Greenland Sea Ocean Drilling Program ODP dataset publication series 2008 ftpangaea https://doi.org/10.1594/PANGAEA.70715610.1016/j.epsl.2007.09.045 2024-07-24T02:31:42Z 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. Other/Unknown Material Greenland Greenland Sea Ice Sheet North Atlantic North Greenland PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(6.946800,6.946800,75.489200,75.489200) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
151-913B DRILL Drilling/drill rig Joides Resolution Leg151 North Greenland Sea Ocean Drilling Program ODP |
spellingShingle |
151-913B DRILL Drilling/drill rig Joides Resolution Leg151 North Greenland Sea Ocean Drilling Program ODP 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 Heavy minerals, grain size distribution, and ice-rafted debris in the Greenland Sea during 44 to 30 Ma |
topic_facet |
151-913B DRILL Drilling/drill rig Joides Resolution Leg151 North Greenland Sea Ocean Drilling Program ODP |
description |
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. |
format |
Other/Unknown Material |
author |
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 |
author_facet |
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 |
author_sort |
Tripati, Aradhna K |
title |
Heavy minerals, grain size distribution, and ice-rafted debris in the Greenland Sea during 44 to 30 Ma |
title_short |
Heavy minerals, grain size distribution, and ice-rafted debris in the Greenland Sea during 44 to 30 Ma |
title_full |
Heavy minerals, grain size distribution, and ice-rafted debris in the Greenland Sea during 44 to 30 Ma |
title_fullStr |
Heavy minerals, grain size distribution, and ice-rafted debris in the Greenland Sea during 44 to 30 Ma |
title_full_unstemmed |
Heavy minerals, grain size distribution, and ice-rafted debris in the Greenland Sea during 44 to 30 Ma |
title_sort |
heavy minerals, grain size distribution, and ice-rafted debris in the greenland sea during 44 to 30 ma |
publisher |
PANGAEA |
publishDate |
2008 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.707156 https://doi.org/10.1594/PANGAEA.707156 |
op_coverage |
LATITUDE: 75.489200 * LONGITUDE: 6.946800 * DATE/TIME START: 1993-09-16T12:17:00 * DATE/TIME END: 1993-09-20T20:30:00 |
long_lat |
ENVELOPE(6.946800,6.946800,75.489200,75.489200) |
genre |
Greenland Greenland Sea Ice Sheet North Atlantic North Greenland |
genre_facet |
Greenland Greenland Sea Ice Sheet North Atlantic North Greenland |
op_source |
Supplement to: 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): Evidence for glaciation in the Northern Hemisphere back to 44 Ma from ice-rafted debris in the Greenland Sea. Earth and Planetary Science Letters, 265(1-2), 112-122, https://doi.org/10.1016/j.epsl.2007.09.045 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.707156 https://doi.org/10.1594/PANGAEA.707156 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.70715610.1016/j.epsl.2007.09.045 |
_version_ |
1810446216638496768 |