Quartz grain microtextures of sediments from ODP Hole 188-1166A (Table 1), supplement to: Strand, Kari O; Passchier, Sandra; Näsi, Jari (2003): Implications of quartz grain microtextures for onset Eocene/Oligocene glaciation in Prydz Bay, ODP Site 1166, Antarctica. Palaeogeography, Palaeoclimatology, Palaeoecology, 198(1-2), 101-111
This paper presents the results of the scanning electron microscopic (SEM) analysis of quartz grains from a selection of samples at Site 1166. Ocean Drilling Program Leg 188 drilled Site 1166 on the Prydz Bay continental shelf, Antarctica, to document onset and fluctuations of East-Antarctic glaciat...
Main Authors: | , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA - Data Publisher for Earth & Environmental Science
2003
|
Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.705274 https://doi.pangaea.de/10.1594/PANGAEA.705274 |
id |
ftdatacite:10.1594/pangaea.705274 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.1594/pangaea.705274 2023-05-15T13:46:22+02:00 Quartz grain microtextures of sediments from ODP Hole 188-1166A (Table 1), supplement to: Strand, Kari O; Passchier, Sandra; Näsi, Jari (2003): Implications of quartz grain microtextures for onset Eocene/Oligocene glaciation in Prydz Bay, ODP Site 1166, Antarctica. Palaeogeography, Palaeoclimatology, Palaeoecology, 198(1-2), 101-111 Strand, Kari O Passchier, Sandra Näsi, Jari 2003 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.705274 https://doi.pangaea.de/10.1594/PANGAEA.705274 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/s0031-0182(03)00396-1 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY DEPTH, sediment/rock Sample code/label Quartz, surface texture Drilling/drill rig DSDP/ODP/IODP sample designation Scanning electron microscope SEM Leg188 Joides Resolution Ocean Drilling Program ODP Supplementary Dataset dataset Dataset 2003 ftdatacite https://doi.org/10.1594/pangaea.705274 https://doi.org/10.1016/s0031-0182(03)00396-1 2022-02-08T16:02:21Z This paper presents the results of the scanning electron microscopic (SEM) analysis of quartz grains from a selection of samples at Site 1166. Ocean Drilling Program Leg 188 drilled Site 1166 on the Prydz Bay continental shelf, Antarctica, to document onset and fluctuations of East-Antarctic glaciation. This site recovered Upper Pliocene-Holocene glacial sediments directly above Cretaceous through Lower Oligocene sediments recording the transition from preglacial to early glacial conditions. SEM analysis of quartz grains at Site 1166 was used to characterize the glacial and preglacial sediments by their diagnostic textures. Angular edges, edge abrasion as well as arcuate to straight steps, are the most frequent features in glacial deposits. The highest frequency of grains with round edges is present in Middle-Late Eocene fluvio-deltaic sands. However, angular outlines, fractured plates with subparallel linear fractures and edge abrasion indicating glacier influence are also present. Preglacial carbonaceous mudstone and laminated gray claystone show distinctive high relief quartz grains and some chemical weathering on grain surfaces. The results of the microtextural analysis of quartz grains are used to verify some critical periods of ice sheet evolution, such as the transition from the East Antarctic preglacial to glacial conditions on the continental shelf from Middle/Late Eocene to Late Eocene/Early Oligocene time. Dataset Antarc* Antarctic Antarctica Ice Sheet Prydz Bay DataCite Metadata Store (German National Library of Science and Technology) Antarctic Kari ENVELOPE(28.979,28.979,66.201,66.201) Prydz Bay |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
DEPTH, sediment/rock Sample code/label Quartz, surface texture Drilling/drill rig DSDP/ODP/IODP sample designation Scanning electron microscope SEM Leg188 Joides Resolution Ocean Drilling Program ODP |
spellingShingle |
DEPTH, sediment/rock Sample code/label Quartz, surface texture Drilling/drill rig DSDP/ODP/IODP sample designation Scanning electron microscope SEM Leg188 Joides Resolution Ocean Drilling Program ODP Strand, Kari O Passchier, Sandra Näsi, Jari Quartz grain microtextures of sediments from ODP Hole 188-1166A (Table 1), supplement to: Strand, Kari O; Passchier, Sandra; Näsi, Jari (2003): Implications of quartz grain microtextures for onset Eocene/Oligocene glaciation in Prydz Bay, ODP Site 1166, Antarctica. Palaeogeography, Palaeoclimatology, Palaeoecology, 198(1-2), 101-111 |
topic_facet |
DEPTH, sediment/rock Sample code/label Quartz, surface texture Drilling/drill rig DSDP/ODP/IODP sample designation Scanning electron microscope SEM Leg188 Joides Resolution Ocean Drilling Program ODP |
description |
This paper presents the results of the scanning electron microscopic (SEM) analysis of quartz grains from a selection of samples at Site 1166. Ocean Drilling Program Leg 188 drilled Site 1166 on the Prydz Bay continental shelf, Antarctica, to document onset and fluctuations of East-Antarctic glaciation. This site recovered Upper Pliocene-Holocene glacial sediments directly above Cretaceous through Lower Oligocene sediments recording the transition from preglacial to early glacial conditions. SEM analysis of quartz grains at Site 1166 was used to characterize the glacial and preglacial sediments by their diagnostic textures. Angular edges, edge abrasion as well as arcuate to straight steps, are the most frequent features in glacial deposits. The highest frequency of grains with round edges is present in Middle-Late Eocene fluvio-deltaic sands. However, angular outlines, fractured plates with subparallel linear fractures and edge abrasion indicating glacier influence are also present. Preglacial carbonaceous mudstone and laminated gray claystone show distinctive high relief quartz grains and some chemical weathering on grain surfaces. The results of the microtextural analysis of quartz grains are used to verify some critical periods of ice sheet evolution, such as the transition from the East Antarctic preglacial to glacial conditions on the continental shelf from Middle/Late Eocene to Late Eocene/Early Oligocene time. |
format |
Dataset |
author |
Strand, Kari O Passchier, Sandra Näsi, Jari |
author_facet |
Strand, Kari O Passchier, Sandra Näsi, Jari |
author_sort |
Strand, Kari O |
title |
Quartz grain microtextures of sediments from ODP Hole 188-1166A (Table 1), supplement to: Strand, Kari O; Passchier, Sandra; Näsi, Jari (2003): Implications of quartz grain microtextures for onset Eocene/Oligocene glaciation in Prydz Bay, ODP Site 1166, Antarctica. Palaeogeography, Palaeoclimatology, Palaeoecology, 198(1-2), 101-111 |
title_short |
Quartz grain microtextures of sediments from ODP Hole 188-1166A (Table 1), supplement to: Strand, Kari O; Passchier, Sandra; Näsi, Jari (2003): Implications of quartz grain microtextures for onset Eocene/Oligocene glaciation in Prydz Bay, ODP Site 1166, Antarctica. Palaeogeography, Palaeoclimatology, Palaeoecology, 198(1-2), 101-111 |
title_full |
Quartz grain microtextures of sediments from ODP Hole 188-1166A (Table 1), supplement to: Strand, Kari O; Passchier, Sandra; Näsi, Jari (2003): Implications of quartz grain microtextures for onset Eocene/Oligocene glaciation in Prydz Bay, ODP Site 1166, Antarctica. Palaeogeography, Palaeoclimatology, Palaeoecology, 198(1-2), 101-111 |
title_fullStr |
Quartz grain microtextures of sediments from ODP Hole 188-1166A (Table 1), supplement to: Strand, Kari O; Passchier, Sandra; Näsi, Jari (2003): Implications of quartz grain microtextures for onset Eocene/Oligocene glaciation in Prydz Bay, ODP Site 1166, Antarctica. Palaeogeography, Palaeoclimatology, Palaeoecology, 198(1-2), 101-111 |
title_full_unstemmed |
Quartz grain microtextures of sediments from ODP Hole 188-1166A (Table 1), supplement to: Strand, Kari O; Passchier, Sandra; Näsi, Jari (2003): Implications of quartz grain microtextures for onset Eocene/Oligocene glaciation in Prydz Bay, ODP Site 1166, Antarctica. Palaeogeography, Palaeoclimatology, Palaeoecology, 198(1-2), 101-111 |
title_sort |
quartz grain microtextures of sediments from odp hole 188-1166a (table 1), supplement to: strand, kari o; passchier, sandra; näsi, jari (2003): implications of quartz grain microtextures for onset eocene/oligocene glaciation in prydz bay, odp site 1166, antarctica. palaeogeography, palaeoclimatology, palaeoecology, 198(1-2), 101-111 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2003 |
url |
https://dx.doi.org/10.1594/pangaea.705274 https://doi.pangaea.de/10.1594/PANGAEA.705274 |
long_lat |
ENVELOPE(28.979,28.979,66.201,66.201) |
geographic |
Antarctic Kari Prydz Bay |
geographic_facet |
Antarctic Kari Prydz Bay |
genre |
Antarc* Antarctic Antarctica Ice Sheet Prydz Bay |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Prydz Bay |
op_relation |
https://dx.doi.org/10.1016/s0031-0182(03)00396-1 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.705274 https://doi.org/10.1016/s0031-0182(03)00396-1 |
_version_ |
1766240974093156352 |