(Table 2) Characteristics of a turbidite flow inferred from physiography and morphology of the margin and the sediment waves


Autoria(s): García, Marga; Dowdeswell, Julian A; Ercilla, Gemma; Jakobsson, Martin
Cobertura

MEDIAN LATITUDE: 73.050000 * MEDIAN LONGITUDE: -12.800000 * SOUTH-BOUND LATITUDE: 73.000000 * WEST-BOUND LONGITUDE: -15.000000 * NORTH-BOUND LATITUDE: 73.100000 * EAST-BOUND LONGITUDE: -10.600000

Data(s)

12/04/2012

Resumo

This paper presents the morpho-sedimentary characterization and interpretations of the assemblage of landforms of the East Greenland continental slope and Greenland Basin, based on swath bathymetry and sub-bottom TOPAS profiles. The interpretation of landforms reveals the glacial influence on recent sedimentary processes shaping the seafloor, including mass-wasting and turbidite flows. The timing of landform development points to a predominantly glacial origin of the sediment supplied to the continental margin, supporting the scenario of a Greenland Ice Sheet extending across the continental shelf, or even to the shelf-edge, during the Last Glacial Maximum (LGM). Major sedimentary processes along the central section of the eastern Greenland Continental Slope, the Norske margin, suggest a relatively high glacial sediment input during the LGM that, probably triggered by tectonic activity, led to the development of scarps and channels on the slope and debris flows on the continental rise. The more southerly Kejser Franz Josef margin has small-scale mass-wasting deposits and an extensive turbidite system that developed in relation to both channelised and unconfined turbidity flows which transferred sediments into the deep Greenland Basin.

Formato

text/tab-separated-values, 97 data points

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.810150

doi:10.1594/PANGAEA.810150

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: García, Marga; Dowdeswell, Julian A; Ercilla, Gemma; Jakobsson, Martin (2012): Recent glacially influenced sedimentary processes on the East Greenland continental slope and deep Greenland Basin. Quaternary Science Reviews, 49, 64-81, doi:10.1016/j.quascirev.2012.06.016

Palavras-Chave #Calculated; East Greenland Shelf basin; Flow speed; Froude number, internal; Gradient; Height above sea floor/altitude; International Polar Year (2007-2008); IPY; James Clark Ross; JR20000727; JR51; JR51_Transects_1-2; Lake, length; Layer thickness; Sector; Site
Tipo

Dataset