Update search
- 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
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
Central Africa
-
Congo (1)
-
-
Congo Basin (1)
-
East Africa
-
Ethiopia (1)
-
Sudan (1)
-
-
North Africa
-
Algeria
-
Ahaggar (1)
-
-
Egypt (1)
-
-
Sahara (2)
-
Southern Africa
-
Botswana (1)
-
Karoo Basin (3)
-
Namibia (1)
-
South Africa
-
Cape Province region (2)
-
Free State South Africa
-
Vredefort Dome (1)
-
-
KwaZulu-Natal South Africa (1)
-
-
-
West Africa
-
Ghana (2)
-
Guinea (1)
-
Guinea-Bissau (1)
-
Liberia (1)
-
Mali (2)
-
Mauritania (1)
-
Senegal (1)
-
Taoudenni Basin (1)
-
-
West African Shield (1)
-
-
Antarctica
-
Antarctic ice sheet
-
West Antarctic ice sheet (2)
-
-
Antarctic Peninsula (1)
-
East Antarctica (1)
-
Ellsworth Land
-
Ellsworth Mountains (1)
-
-
Marie Byrd Land (1)
-
South Shetland Islands
-
King George Island (2)
-
-
Transantarctic Mountains
-
Beardmore Glacier (1)
-
-
Victoria Land (1)
-
West Antarctica (1)
-
-
Arctic Ocean (1)
-
Arctic region
-
Greenland
-
East Greenland (1)
-
-
Svalbard
-
Spitsbergen (4)
-
-
-
Asia
-
Arabian Peninsula
-
Oman
-
Oman Mountains (1)
-
-
-
Far East
-
China
-
Chongqing China (1)
-
Guizhou China (1)
-
Henan China (1)
-
Hubei China
-
Yichang China (1)
-
-
South China Block (1)
-
-
-
Indian Peninsula
-
India
-
Ajay River (1)
-
Bihar India (1)
-
Himachal Pradesh India (1)
-
Madhya Pradesh India (1)
-
Uttar Pradesh India (1)
-
-
Pakistan (1)
-
-
Siberian Platform (2)
-
-
Atlantic Ocean Islands
-
Shetland Islands (1)
-
-
Australasia
-
Australia
-
Adelaide Geosyncline (1)
-
New South Wales Australia (1)
-
Officer Basin (1)
-
South Australia
-
Flinders Ranges (2)
-
Mount Lofty Ranges (1)
-
-
Tasmania Australia (3)
-
Western Australia (2)
-
-
-
Caledonides (3)
-
Canada
-
Eastern Canada
-
Newfoundland and Labrador
-
Newfoundland
-
Avalon Peninsula (1)
-
-
-
Ontario (2)
-
-
Mackenzie Mountains (2)
-
Western Canada
-
Northwest Territories (4)
-
Saskatchewan (1)
-
Yukon Territory (1)
-
-
-
Cascade Range (1)
-
Commonwealth of Independent States
-
Russian Federation
-
Siberian Platform (2)
-
-
-
Death Valley (1)
-
Drake Passage (1)
-
Europe
-
Baltic region (1)
-
Western Europe
-
France
-
Normandy (1)
-
-
Ireland
-
Donegal Ireland (1)
-
-
Scandinavia
-
Finland (1)
-
Norway
-
Finnmark Norway
-
Varanger Fjord (1)
-
Varanger Peninsula (1)
-
-
Northern Norway (3)
-
-
-
United Kingdom
-
Great Britain
-
England (1)
-
Scotland
-
Scottish Highlands
-
Grampian Highlands (2)
-
-
Shetland Islands (1)
-
-
-
Northern Ireland (1)
-
-
-
-
North America
-
Appalachians
-
Blue Ridge Province (1)
-
-
Canadian Shield
-
Grenville Province (1)
-
-
Great Lakes region (1)
-
Rocky Mountains
-
U. S. Rocky Mountains
-
Wasatch Range (1)
-
-
-
-
Scotia Sea Islands
-
South Shetland Islands
-
King George Island (2)
-
-
-
Snake River (1)
-
South America
-
Amazon Basin (1)
-
Argentina
-
Jujuy Argentina (1)
-
Pampean Mountains (1)
-
San Juan Argentina (1)
-
-
Bolivia (1)
-
Brazil
-
Brazilian Shield (1)
-
Minas Gerais Brazil (1)
-
Sao Francisco Craton (1)
-
Sao Paulo Brazil (2)
-
-
Chaco (1)
-
Parana Basin (3)
-
Peru (1)
-
-
Southern Ocean
-
Ross Sea (1)
-
-
Taoudenni (2)
-
United States
-
Alaska (1)
-
California
-
Inyo County California (1)
-
San Bernardino County California (1)
-
-
Colorado (1)
-
Massachusetts
-
Norfolk County Massachusetts (1)
-
Suffolk County Massachusetts
-
Boston Massachusetts (1)
-
-
-
Pennsylvania
-
Mifflin County Pennsylvania (1)
-
-
Tennessee (1)
-
U. S. Rocky Mountains
-
Wasatch Range (1)
-
-
Utah (3)
-
Virginia
-
Albemarle County Virginia (1)
-
-
-
-
commodities
-
diamond deposits (1)
-
mineral deposits, genesis (1)
-
petroleum (2)
-
-
elements, isotopes
-
carbon
-
C-13/C-12 (9)
-
organic carbon (1)
-
-
isotope ratios (6)
-
isotopes
-
stable isotopes
-
C-13/C-12 (9)
-
O-17 (1)
-
O-18/O-16 (5)
-
-
-
metals
-
alkaline earth metals
-
strontium (1)
-
-
hafnium (1)
-
iron (1)
-
rare earths (1)
-
-
oxygen
-
O-17 (1)
-
O-18/O-16 (5)
-
-
-
fossils
-
Chordata
-
Vertebrata
-
Pisces
-
Osteichthyes
-
Sarcopterygii
-
Crossopterygii (1)
-
-
-
-
-
-
coprolites (1)
-
eukaryotes (1)
-
Graptolithina (1)
-
ichnofossils (2)
-
Invertebrata
-
Archaeocyatha (1)
-
Brachiopoda
-
Inarticulata
-
Lingula (1)
-
-
-
Porifera (1)
-
Protista
-
Radiolaria (1)
-
Silicoflagellata (1)
-
-
-
Metazoa (2)
-
microfossils
-
Chitinozoa (1)
-
-
palynomorphs
-
acritarchs (1)
-
Chitinozoa (1)
-
miospores
-
pollen (1)
-
-
-
Plantae
-
algae
-
diatoms (1)
-
-
-
problematic fossils (1)
-
prokaryotes (1)
-
-
geochronology methods
-
Ar/Ar (2)
-
K/Ar (2)
-
paleomagnetism (9)
-
U/Pb (8)
-
U/Th/Pb (1)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene (1)
-
Pleistocene (2)
-
-
Sirius Group (1)
-
Tertiary
-
Neogene
-
Miocene
-
middle Miocene (1)
-
-
Pliocene (1)
-
-
Paleogene
-
Eocene
-
upper Eocene (1)
-
-
Oligocene
-
lower Oligocene (1)
-
-
Paleocene (1)
-
upper Paleogene (1)
-
-
-
upper Cenozoic (1)
-
-
Dalradian (6)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Albian (1)
-
Aptian (1)
-
-
Upper Cretaceous (1)
-
-
Jurassic
-
Lower Jurassic
-
Toarcian (1)
-
-
-
Triassic
-
Upper Triassic
-
Carnian (1)
-
Rhaetian (1)
-
-
-
-
Paleozoic
-
Cambrian
-
Lower Cambrian
-
Tommotian (1)
-
-
Middle Cambrian (1)
-
Upper Cambrian (1)
-
-
Carboniferous
-
Pennsylvanian (2)
-
Upper Carboniferous
-
Talchir Series (1)
-
-
-
Devonian (1)
-
Itarare Subgroup (1)
-
lower Paleozoic (1)
-
middle Paleozoic (1)
-
Ordovician
-
Middle Ordovician
-
Llandeilian (1)
-
-
Upper Ordovician
-
Ashgillian (2)
-
Caradocian (1)
-
Hirnantian (2)
-
Juniata Formation (1)
-
Katian (1)
-
-
-
Permian
-
Lower Permian
-
Al Khlata Formation (1)
-
-
Upper Permian (1)
-
-
Silurian
-
Lower Silurian
-
Llandovery
-
Aeronian (1)
-
Telychian (1)
-
-
Wenlock (1)
-
-
-
upper Paleozoic
-
Dwyka Formation (3)
-
-
-
Phanerozoic (3)
-
Precambrian
-
Archean (1)
-
Eocambrian (3)
-
Kingston Peak Formation (1)
-
Luoquan Formation (1)
-
upper Precambrian
-
Proterozoic
-
Banxi Group (1)
-
Huronian
-
Gowganda Formation (2)
-
-
Mesoproterozoic
-
Stenian (1)
-
-
Neoproterozoic
-
Cryogenian (5)
-
Ediacaran
-
Wonoka Formation (1)
-
-
Hadrynian (1)
-
Infracambrian (2)
-
Marinoan (7)
-
Nantuo Formation (2)
-
Otavi Group (1)
-
Riphean
-
upper Riphean (1)
-
-
Sturtian (6)
-
Vendian (12)
-
-
Paleoproterozoic
-
Orosirian (1)
-
-
Sinian
-
Nantuo Formation (2)
-
-
Umberatana Group (1)
-
Windermere System (1)
-
-
-
-
-
igneous rocks
-
igneous rocks
-
kimberlite (1)
-
plutonic rocks
-
gabbros (2)
-
granites (1)
-
lamproite (1)
-
lamprophyres (1)
-
ultramafics (1)
-
-
volcanic rocks
-
basalts (3)
-
basanite (1)
-
phonolites (1)
-
pyroclastics
-
hyaloclastite (1)
-
tuff (1)
-
-
trachytes (3)
-
-
-
-
metamorphic rocks
-
metamorphic rocks
-
gneisses (1)
-
impactites
-
impact breccia (1)
-
-
itabirite (1)
-
metasedimentary rocks
-
metasandstone (1)
-
-
phyllites (1)
-
quartzites (2)
-
-
turbidite (5)
-
-
minerals
-
hydrates (1)
-
minerals (2)
-
silicates
-
framework silicates
-
silica minerals
-
quartz (3)
-
-
-
magnesian silicates (1)
-
orthosilicates
-
nesosilicates
-
garnet group (3)
-
zircon group
-
zircon (9)
-
-
-
-
sheet silicates
-
clay minerals
-
smectite (1)
-
-
illite (1)
-
-
-
sulfates
-
barite (1)
-
-
-
Primary terms
-
absolute age (11)
-
Africa
-
Central Africa
-
Congo (1)
-
-
Congo Basin (1)
-
East Africa
-
Ethiopia (1)
-
Sudan (1)
-
-
North Africa
-
Algeria
-
Ahaggar (1)
-
-
Egypt (1)
-
-
Sahara (2)
-
Southern Africa
-
Botswana (1)
-
Karoo Basin (3)
-
Namibia (1)
-
South Africa
-
Cape Province region (2)
-
Free State South Africa
-
Vredefort Dome (1)
-
-
KwaZulu-Natal South Africa (1)
-
-
-
West Africa
-
Ghana (2)
-
Guinea (1)
-
Guinea-Bissau (1)
-
Liberia (1)
-
Mali (2)
-
Mauritania (1)
-
Senegal (1)
-
Taoudenni Basin (1)
-
-
West African Shield (1)
-
-
Antarctica
-
Antarctic ice sheet
-
West Antarctic ice sheet (2)
-
-
Antarctic Peninsula (1)
-
East Antarctica (1)
-
Ellsworth Land
-
Ellsworth Mountains (1)
-
-
Marie Byrd Land (1)
-
South Shetland Islands
-
King George Island (2)
-
-
Transantarctic Mountains
-
Beardmore Glacier (1)
-
-
Victoria Land (1)
-
West Antarctica (1)
-
-
Arctic Ocean (1)
-
Arctic region
-
Greenland
-
East Greenland (1)
-
-
Svalbard
-
Spitsbergen (4)
-
-
-
Asia
-
Arabian Peninsula
-
Oman
-
Oman Mountains (1)
-
-
-
Far East
-
China
-
Chongqing China (1)
-
Guizhou China (1)
-
Henan China (1)
-
Hubei China
-
Yichang China (1)
-
-
South China Block (1)
-
-
-
Indian Peninsula
-
India
-
Ajay River (1)
-
Bihar India (1)
-
Himachal Pradesh India (1)
-
Madhya Pradesh India (1)
-
Uttar Pradesh India (1)
-
-
Pakistan (1)
-
-
Siberian Platform (2)
-
-
Atlantic Ocean Islands
-
Shetland Islands (1)
-
-
Australasia
-
Australia
-
Adelaide Geosyncline (1)
-
New South Wales Australia (1)
-
Officer Basin (1)
-
South Australia
-
Flinders Ranges (2)
-
Mount Lofty Ranges (1)
-
-
Tasmania Australia (3)
-
Western Australia (2)
-
-
-
biogeography (1)
-
Canada
-
Eastern Canada
-
Newfoundland and Labrador
-
Newfoundland
-
Avalon Peninsula (1)
-
-
-
Ontario (2)
-
-
Mackenzie Mountains (2)
-
Western Canada
-
Northwest Territories (4)
-
Saskatchewan (1)
-
Yukon Territory (1)
-
-
-
carbon
-
C-13/C-12 (9)
-
organic carbon (1)
-
-
Cenozoic
-
Quaternary
-
Holocene (1)
-
Pleistocene (2)
-
-
Sirius Group (1)
-
Tertiary
-
Neogene
-
Miocene
-
middle Miocene (1)
-
-
Pliocene (1)
-
-
Paleogene
-
Eocene
-
upper Eocene (1)
-
-
Oligocene
-
lower Oligocene (1)
-
-
Paleocene (1)
-
upper Paleogene (1)
-
-
-
upper Cenozoic (1)
-
-
Chordata
-
Vertebrata
-
Pisces
-
Osteichthyes
-
Sarcopterygii
-
Crossopterygii (1)
-
-
-
-
-
-
clay mineralogy (1)
-
climate change (2)
-
continental drift (1)
-
coprolites (1)
-
crust (1)
-
crystal growth (1)
-
data processing (1)
-
deformation (3)
-
diagenesis (3)
-
diamond deposits (1)
-
economic geology (3)
-
electron microscopy (1)
-
Europe
-
Baltic region (1)
-
Western Europe
-
France
-
Normandy (1)
-
-
Ireland
-
Donegal Ireland (1)
-
-
Scandinavia
-
Finland (1)
-
Norway
-
Finnmark Norway
-
Varanger Fjord (1)
-
Varanger Peninsula (1)
-
-
Northern Norway (3)
-
-
-
United Kingdom
-
Great Britain
-
England (1)
-
Scotland
-
Scottish Highlands
-
Grampian Highlands (2)
-
-
Shetland Islands (1)
-
-
-
Northern Ireland (1)
-
-
-
-
faults (2)
-
folds (3)
-
foliation (1)
-
fractures (1)
-
geochemistry (4)
-
geochronology (3)
-
geomorphology (2)
-
glacial geology (40)
-
Graptolithina (1)
-
ichnofossils (2)
-
igneous rocks
-
kimberlite (1)
-
plutonic rocks
-
gabbros (2)
-
granites (1)
-
lamproite (1)
-
lamprophyres (1)
-
ultramafics (1)
-
-
volcanic rocks
-
basalts (3)
-
basanite (1)
-
phonolites (1)
-
pyroclastics
-
hyaloclastite (1)
-
tuff (1)
-
-
trachytes (3)
-
-
-
intrusions (1)
-
Invertebrata
-
Archaeocyatha (1)
-
Brachiopoda
-
Inarticulata
-
Lingula (1)
-
-
-
Porifera (1)
-
Protista
-
Radiolaria (1)
-
Silicoflagellata (1)
-
-
-
isotopes
-
stable isotopes
-
C-13/C-12 (9)
-
O-17 (1)
-
O-18/O-16 (5)
-
-
-
lava (2)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Albian (1)
-
Aptian (1)
-
-
Upper Cretaceous (1)
-
-
Jurassic
-
Lower Jurassic
-
Toarcian (1)
-
-
-
Triassic
-
Upper Triassic
-
Carnian (1)
-
Rhaetian (1)
-
-
-
-
metals
-
alkaline earth metals
-
strontium (1)
-
-
hafnium (1)
-
iron (1)
-
rare earths (1)
-
-
metamorphic rocks
-
gneisses (1)
-
impactites
-
impact breccia (1)
-
-
itabirite (1)
-
metasedimentary rocks
-
metasandstone (1)
-
-
phyllites (1)
-
quartzites (2)
-
-
metamorphism (3)
-
metasomatism (1)
-
mineral deposits, genesis (1)
-
minerals (2)
-
North America
-
Appalachians
-
Blue Ridge Province (1)
-
-
Canadian Shield
-
Grenville Province (1)
-
-
Great Lakes region (1)
-
Rocky Mountains
-
U. S. Rocky Mountains
-
Wasatch Range (1)
-
-
-
-
ocean basins (1)
-
orogeny (4)
-
oxygen
-
O-17 (1)
-
O-18/O-16 (5)
-
-
paleoclimatology (21)
-
paleoecology (1)
-
paleogeography (20)
-
paleomagnetism (9)
-
Paleozoic
-
Cambrian
-
Lower Cambrian
-
Tommotian (1)
-
-
Middle Cambrian (1)
-
Upper Cambrian (1)
-
-
Carboniferous
-
Pennsylvanian (2)
-
Upper Carboniferous
-
Talchir Series (1)
-
-
-
Devonian (1)
-
Itarare Subgroup (1)
-
lower Paleozoic (1)
-
middle Paleozoic (1)
-
Ordovician
-
Middle Ordovician
-
Llandeilian (1)
-
-
Upper Ordovician
-
Ashgillian (2)
-
Caradocian (1)
-
Hirnantian (2)
-
Juniata Formation (1)
-
Katian (1)
-
-
-
Permian
-
Lower Permian
-
Al Khlata Formation (1)
-
-
Upper Permian (1)
-
-
Silurian
-
Lower Silurian
-
Llandovery
-
Aeronian (1)
-
Telychian (1)
-
-
Wenlock (1)
-
-
-
upper Paleozoic
-
Dwyka Formation (3)
-
-
-
palynology (1)
-
palynomorphs
-
acritarchs (1)
-
Chitinozoa (1)
-
miospores
-
pollen (1)
-
-
-
petroleum (2)
-
petrology (5)
-
Phanerozoic (3)
-
Plantae
-
algae
-
diatoms (1)
-
-
-
plate tectonics (2)
-
Precambrian
-
Archean (1)
-
Eocambrian (3)
-
Kingston Peak Formation (1)
-
Luoquan Formation (1)
-
upper Precambrian
-
Proterozoic
-
Banxi Group (1)
-
Huronian
-
Gowganda Formation (2)
-
-
Mesoproterozoic
-
Stenian (1)
-
-
Neoproterozoic
-
Cryogenian (5)
-
Ediacaran
-
Wonoka Formation (1)
-
-
Hadrynian (1)
-
Infracambrian (2)
-
Marinoan (7)
-
Nantuo Formation (2)
-
Otavi Group (1)
-
Riphean
-
upper Riphean (1)
-
-
Sturtian (6)
-
Vendian (12)
-
-
Paleoproterozoic
-
Orosirian (1)
-
-
Sinian
-
Nantuo Formation (2)
-
-
Umberatana Group (1)
-
Windermere System (1)
-
-
-
-
problematic fossils (1)
-
remote sensing (1)
-
sea water (1)
-
sea-level changes (5)
-
sedimentary petrology (21)
-
sedimentary rocks
-
carbonate rocks
-
dolostone (4)
-
limestone (1)
-
-
chemically precipitated rocks
-
evaporites (1)
-
iron formations (1)
-
-
clastic rocks
-
argillite (2)
-
black shale (1)
-
claystone (1)
-
conglomerate (5)
-
diamictite (26)
-
mudstone (3)
-
sandstone (7)
-
shale (5)
-
siltstone (4)
-
tillite (106)
-
tilloid (1)
-
-
-
sedimentary structures
-
bedding plane irregularities
-
grooves (1)
-
ripple marks (1)
-
-
graded bedding (1)
-
planar bedding structures
-
hummocky cross-stratification (1)
-
laminations (3)
-
rhythmic bedding (1)
-
rhythmite (2)
-
-
primary structures (1)
-
soft sediment deformation (1)
-
-
sedimentation (24)
-
sediments
-
clastic sediments
-
alluvium (1)
-
boulders (3)
-
diamicton (1)
-
erratics (2)
-
loess (1)
-
pebbles (1)
-
sand (2)
-
till (2)
-
-
-
soils
-
Podzols (1)
-
-
South America
-
Amazon Basin (1)
-
Argentina
-
Jujuy Argentina (1)
-
Pampean Mountains (1)
-
San Juan Argentina (1)
-
-
Bolivia (1)
-
Brazil
-
Brazilian Shield (1)
-
Minas Gerais Brazil (1)
-
Sao Francisco Craton (1)
-
Sao Paulo Brazil (2)
-
-
Chaco (1)
-
Parana Basin (3)
-
Peru (1)
-
-
Southern Ocean
-
Ross Sea (1)
-
-
stratigraphy (29)
-
structural analysis (1)
-
structural geology (6)
-
tectonics (7)
-
United States
-
Alaska (1)
-
California
-
Inyo County California (1)
-
San Bernardino County California (1)
-
-
Colorado (1)
-
Massachusetts
-
Norfolk County Massachusetts (1)
-
Suffolk County Massachusetts
-
Boston Massachusetts (1)
-
-
-
Pennsylvania
-
Mifflin County Pennsylvania (1)
-
-
Tennessee (1)
-
U. S. Rocky Mountains
-
Wasatch Range (1)
-
-
Utah (3)
-
Virginia
-
Albemarle County Virginia (1)
-
-
-
volcanology (1)
-
weathering (4)
-
well-logging (1)
-
-
rock formations
-
Beacon Supergroup (1)
-
Beaufort Group (1)
-
Huqf Supergroup (1)
-
Karoo Supergroup (1)
-
Nubian Sandstone (1)
-
Pagoda Formation (1)
-
Puncoviscana Formation (1)
-
San Juan Formation (1)
-
-
sedimentary rocks
-
laminite (1)
-
molasse (2)
-
sedimentary rocks
-
carbonate rocks
-
dolostone (4)
-
limestone (1)
-
-
chemically precipitated rocks
-
evaporites (1)
-
iron formations (1)
-
-
clastic rocks
-
argillite (2)
-
black shale (1)
-
claystone (1)
-
conglomerate (5)
-
diamictite (26)
-
mudstone (3)
-
sandstone (7)
-
shale (5)
-
siltstone (4)
-
tillite (106)
-
tilloid (1)
-
-
-
siliciclastics (3)
-
turbidite (5)
-
-
sedimentary structures
-
coprolites (1)
-
laminite (1)
-
sedimentary structures
-
bedding plane irregularities
-
grooves (1)
-
ripple marks (1)
-
-
graded bedding (1)
-
planar bedding structures
-
hummocky cross-stratification (1)
-
laminations (3)
-
rhythmic bedding (1)
-
rhythmite (2)
-
-
primary structures (1)
-
soft sediment deformation (1)
-
-
striations (5)
-
-
sediments
-
sediments
-
clastic sediments
-
alluvium (1)
-
boulders (3)
-
diamicton (1)
-
erratics (2)
-
loess (1)
-
pebbles (1)
-
sand (2)
-
till (2)
-
-
-
siliciclastics (3)
-
turbidite (5)
-
-
soils
-
paleosols (3)
-
soils
-
Podzols (1)
-
-
GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
tillite
Geochronology and formal stratigraphy of the Sturtian Glaciation in the Adelaide Superbasin
Abstract Nineteen large (2348–4285 m above sea level) central polygenetic alkaline shield-like composite volcanoes and numerous smaller volcanoes in Marie Byrd Land (MBL) and western Ellsworth Land rise above the West Antarctic Ice Sheet (WAIS) and comprise the MBL Volcanic Group (MBLVG). Earliest MBLVG volcanism dates to the latest Eocene (36.6 Ma). Polygenetic volcanism began by the middle Miocene (13.4 Ma) and has continued into the Holocene without major interruptions, producing the central volcanoes with 24 large (2–10 km-diameter) summit calderas and abundant evidence for explosive eruptions in caldera-rim deposits. Rock lithofacies are dominated by basanite and trachyte/phonolite lava and breccia, deposited in both subaerial and ice-contact environments. The chronology of MBLVG volcanism is well constrained by 330 age analyses, including 52 new 40 Ar/ 39 Ar ages. A volcanic lithofacies record of glaciation provides evidence of local ice-cap glaciation at 29–27 Ma and of widespread WAIS glaciation by 9 Ma. Late Quaternary glaciovolcanic records document WAIS expansions that correlate to eustatic sea-level lowstands (MIS 16, 4 and 2): the WAIS was +500 m at 609 ka at coastal Mount Murphy, and +400 m at 64.7 ka, +400 m at 21.2 ka and +575 m at 17.5 ka at inland Mount Takahe.