Skip Nav Destination
Close Modal
Update search
Filter
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
Filter
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
Filter
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
Filter
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
Filter
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
Filter
- 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
-
Asia
-
Far East
-
China
-
Hubei China
-
Yichang China (1)
-
-
Jiangsu China
-
Nanjing China (1)
-
-
Xinjiang China
-
Tarim Basin (1)
-
-
Yangtze Platform (1)
-
-
-
-
Commonwealth of Independent States
-
Dniester River (1)
-
Ukraine
-
Podolia (1)
-
-
-
Europe
-
Baltic region
-
Estonia (1)
-
-
Dniester River (1)
-
Ukraine
-
Podolia (1)
-
-
Western Europe
-
Scandinavia (2)
-
-
-
Mohawk Valley (1)
-
North America (3)
-
Northern Hemisphere (1)
-
South America
-
Argentina (1)
-
-
United States
-
Illinois
-
Alexander County Illinois (1)
-
Calhoun County Illinois (1)
-
Union County Illinois (1)
-
-
Midcontinent (3)
-
Mississippi Valley (1)
-
Missouri
-
Cape Girardeau County Missouri (1)
-
Pike County Missouri (1)
-
-
New York
-
Herkimer County New York (1)
-
Montgomery County New York (1)
-
-
Tennessee
-
Wilson County Tennessee (1)
-
-
-
-
elements, isotopes
-
carbon
-
C-13/C-12 (2)
-
-
isotope ratios (2)
-
isotopes
-
stable isotopes
-
C-13/C-12 (2)
-
-
-
-
fossils
-
Graptolithina
-
Graptoloidea (2)
-
-
Invertebrata
-
Brachiopoda (1)
-
-
microfossils
-
Chitinozoa (1)
-
Conodonta (2)
-
-
palynomorphs
-
Chitinozoa (1)
-
-
-
geochronology methods
-
Ar/Ar (1)
-
tephrochronology (2)
-
U/Pb (1)
-
-
geologic age
-
Paleozoic
-
Ordovician
-
Middle Ordovician
-
Black River Group (1)
-
-
Trenton Group (1)
-
Upper Ordovician
-
Ashgillian (1)
-
Caradocian (1)
-
Hirnantian (1)
-
Trentonian (1)
-
-
Utica Shale (1)
-
-
Silurian
-
Lower Silurian
-
Wenlock (1)
-
-
Upper Silurian
-
Ludlow (1)
-
Pridoli (1)
-
-
-
-
-
metamorphic rocks
-
K-bentonite (4)
-
-
minerals
-
K-bentonite (4)
-
silicates
-
framework silicates
-
feldspar group
-
alkali feldspar
-
sanidine (1)
-
-
-
silica minerals
-
quartz (1)
-
-
-
orthosilicates
-
nesosilicates
-
zircon group
-
zircon (1)
-
-
-
-
sheet silicates
-
mica group
-
biotite (1)
-
-
-
-
-
Primary terms
-
absolute age (1)
-
Asia
-
Far East
-
China
-
Hubei China
-
Yichang China (1)
-
-
Jiangsu China
-
Nanjing China (1)
-
-
Xinjiang China
-
Tarim Basin (1)
-
-
Yangtze Platform (1)
-
-
-
-
carbon
-
C-13/C-12 (2)
-
-
clay mineralogy (1)
-
diagenesis (1)
-
Europe
-
Baltic region
-
Estonia (1)
-
-
Dniester River (1)
-
Ukraine
-
Podolia (1)
-
-
Western Europe
-
Scandinavia (2)
-
-
-
geochemistry (4)
-
geochronology (2)
-
Graptolithina
-
Graptoloidea (2)
-
-
inclusions (1)
-
Invertebrata
-
Brachiopoda (1)
-
-
isotopes
-
stable isotopes
-
C-13/C-12 (2)
-
-
-
North America (3)
-
Northern Hemisphere (1)
-
paleogeography (3)
-
Paleozoic
-
Ordovician
-
Middle Ordovician
-
Black River Group (1)
-
-
Trenton Group (1)
-
Upper Ordovician
-
Ashgillian (1)
-
Caradocian (1)
-
Hirnantian (1)
-
Trentonian (1)
-
-
Utica Shale (1)
-
-
Silurian
-
Lower Silurian
-
Wenlock (1)
-
-
Upper Silurian
-
Ludlow (1)
-
Pridoli (1)
-
-
-
-
palynomorphs
-
Chitinozoa (1)
-
-
sea-level changes (2)
-
sedimentary rocks
-
carbonate rocks
-
limestone (1)
-
-
clastic rocks
-
bentonite (4)
-
diamictite (1)
-
mudstone (1)
-
-
-
sedimentation (2)
-
South America
-
Argentina (1)
-
-
United States
-
Illinois
-
Alexander County Illinois (1)
-
Calhoun County Illinois (1)
-
Union County Illinois (1)
-
-
Midcontinent (3)
-
Mississippi Valley (1)
-
Missouri
-
Cape Girardeau County Missouri (1)
-
Pike County Missouri (1)
-
-
New York
-
Herkimer County New York (1)
-
Montgomery County New York (1)
-
-
Tennessee
-
Wilson County Tennessee (1)
-
-
-
volcanology (1)
-
-
rock formations
-
Pagoda Formation (1)
-
-
sedimentary rocks
-
sedimentary rocks
-
carbonate rocks
-
limestone (1)
-
-
clastic rocks
-
bentonite (4)
-
diamictite (1)
-
mudstone (1)
-
-
-
GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
1-9 OF 9
Results shown limited to content with bounding coordinates.
Stig M. Bergström
Close
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Sort by
Journal Article
First documentation of the Ordovician Guttenberg δ 13 C excursion (GICE) in Asia: chemostratigraphy of the Pagoda and Yanwashan formations in southeastern China
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 05 November 2008
Geological Magazine (2009) 146 (1): 1–11.
Journal Article
First record of the Hirnantian (Upper Ordovician) δ 13 C excursion in the North American Midcontinent and its regional implications
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 01 September 2006
Geological Magazine (2006) 143 (5): 657–678.
Journal Article
The Ordovician Sebree Trough: An oceanic passage to the Midcontinent United States
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 01 August 2001
GSA Bulletin (2001) 113 (8): 1067–1078.
Journal Article
Silurian K‐bentonites of the Dnestr Basin, Podolia, Ukraine
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 01 March 2000
Journal of the Geological Society (2000) 157 (2): 493–504.
Journal Article
Nature and regional significance of unconformities associated with the Middle Ordovician Hagan K-bentonite complex in the North American midcontinent
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 01 June 1998
GSA Bulletin (1998) 110 (6): 723–739.
Series: GSA Special Papers
Publisher: Geological Society of America
Published: 01 July 1997
DOI: 10.1130/0-8137-2321-3.11
Journal Article
Temporal and spatial distribution of biozones and facies relative to geochemically correlated K-bentonites in the Middle Ordovician Taconic foredeep
Journal: Geology
Publisher: Geological Society of America
Published: 01 August 1994
Geology (1994) 22 (8): 715–718.
Journal Article
Gigantic Ordovician volcanic ash fall in North America and Europe: Biological, tectonomagmatic, and event-stratigraphic significance: Comments and Replies
Journal: Geology
Publisher: Geological Society of America
Published: 01 April 1993
Geology (1993) 21 (4): 381–384.
Journal Article
Gigantic Ordovician volcanic ash fall in North America and Europe: Biological, tectonomagmatic, and event-stratigraphic significance
Journal: Geology
Publisher: Geological Society of America
Published: 01 October 1992
Geology (1992) 20 (10): 875–878.