Quartz grain microtextures of sediments from ODP Hole 188-1166A (Table 1) ...

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...

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Bibliographic Details
Main Authors: Strand, Kari O, Passchier, Sandra, Näsi, Jari
Format: Dataset
Language:English
Published: PANGAEA 2003
Subjects:
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
Antarc*
Antarctic
Antarctica
Prydz Bay
Online Access:https://dx.doi.org/10.1594/pangaea.705274
https://doi.pangaea.de/10.1594/PANGAEA.705274
Description
Summary: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 ... : 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 ...

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