- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Antarctica
-
Antarctic ice sheet
-
East Antarctic ice sheet (2)
-
-
East Antarctica (4)
-
Vestfold Hills (1)
-
Wilkes Land
-
Adelie Coast (1)
-
Law Dome (1)
-
-
-
Australasia
-
Australia
-
South Australia
-
Gawler Craton (1)
-
-
-
-
Southern Ocean
-
Prydz Bay (1)
-
-
-
elements, isotopes
-
isotope ratios (1)
-
isotopes
-
stable isotopes
-
O-18/O-16 (1)
-
-
-
oxygen
-
O-18/O-16 (1)
-
-
-
geochronology methods
-
Th/U (1)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene (1)
-
Pleistocene
-
upper Pleistocene (1)
-
-
-
-
Paleozoic
-
Cambrian (1)
-
-
-
igneous rocks
-
igneous rocks
-
plutonic rocks
-
granites (1)
-
-
-
-
minerals
-
carbonates
-
aragonite (1)
-
-
-
Primary terms
-
absolute age (1)
-
Antarctica
-
Antarctic ice sheet
-
East Antarctic ice sheet (2)
-
-
East Antarctica (4)
-
Vestfold Hills (1)
-
Wilkes Land
-
Adelie Coast (1)
-
Law Dome (1)
-
-
-
Australasia
-
Australia
-
South Australia
-
Gawler Craton (1)
-
-
-
-
Cenozoic
-
Quaternary
-
Holocene (1)
-
Pleistocene
-
upper Pleistocene (1)
-
-
-
-
crust (1)
-
geomorphology (1)
-
geophysical methods (3)
-
glacial geology (1)
-
heat flow (1)
-
hydrology (1)
-
igneous rocks
-
plutonic rocks
-
granites (1)
-
-
-
isotopes
-
stable isotopes
-
O-18/O-16 (1)
-
-
-
oxygen
-
O-18/O-16 (1)
-
-
paleogeography (1)
-
Paleozoic
-
Cambrian (1)
-
-
remote sensing (1)
-
sea-level changes (1)
-
sediments
-
carbonate sediments (1)
-
clastic sediments
-
boulders (1)
-
-
-
Southern Ocean
-
Prydz Bay (1)
-
-
stratigraphy (1)
-
-
sedimentary rocks
-
oolite (1)
-
-
sediments
-
oolite (1)
-
sediments
-
carbonate sediments (1)
-
clastic sediments
-
boulders (1)
-
-
-
A newly discovered subglacial lake in East Antarctica likely hosts a valuable sedimentary record of ice and climate change
Abstract Rare jökulhlaup events, also known as subglacial lake outburst flood events, have been observed at the Law Dome ice margin and provide an insight into the physical characteristics of subglacial meltwater and drainage. The subglacial topography based on data from the BEDMAP2 and ICECAP projects, together with subsurface transects of the ice margin obtained using ground-penetrating radar, reveal several lakes and lake-like depressions and the drainage pathways of two jökulhlaup events. Oxygen isotope typing of the meltwater during the most recent (2014) jökulhlaup event, combined with ice margin stratigraphy, enable the identification of ice tunnel melt pathways that exploit the 30–90° dipping basal ice layering. The presence of subglacial meltwater beneath Law Dome during the Holocene to Glacial periods is confirmed by the dendritic drainage pattern in the subglacial morphology and extensive layers of basal regelation ice and subglacial carbonate precipitate deposits found within the Løken Moraines sediments. These subglacial carbonates, including ooid layers, formed from the mixing of glacial meltwater and seawater at 72 ka BP. The combined evidence indicates that the ocean discharge of subglacial meltwater may be variable and/or is periodically blocked by basal freezing events near the ice sheet terminus.