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all geography including DSDP/ODP Sites and Legs
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Cenozoic
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sulfates
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celestine (3)
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sulfides
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Primary terms
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Asia
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Middle East
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Australasia
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Australia
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Canning Basin (1)
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Cenozoic
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Tertiary
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Neogene
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Miocene
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middle Miocene
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Serravallian (1)
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Paleogene
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Eocene (1)
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Europe
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Southern Europe
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Iberian Peninsula
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Andalusia Spain
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Almeria Spain (2)
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Betic Cordillera (1)
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Castilla y Leon Spain
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Western Europe
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France
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Paris Basin (1)
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United Kingdom
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England
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Bristol England (1)
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Somerset England (1)
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gems (3)
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geochemistry (4)
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geophysical methods (1)
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hydrogen
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deuterium (1)
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igneous rocks
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volcanic rocks
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andesites (1)
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basalts
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flood basalts (2)
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inclusions
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fluid inclusions (5)
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intrusions (1)
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Invertebrata
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Bryozoa (1)
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Echinodermata
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Crinozoa
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Crinoidea (1)
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Porifera (1)
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isotopes
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stable isotopes
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deuterium (1)
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O-18 (1)
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O-18/O-16 (2)
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S-34/S-32 (4)
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Sr-87/Sr-86 (1)
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lava (1)
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magmas (2)
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Mesozoic
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Cretaceous
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Lower Cretaceous (2)
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Upper Cretaceous
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Campanian (1)
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Santonian (1)
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Senonian (1)
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Jurassic
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Lower Jurassic
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lower Liassic (1)
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Middle Jurassic
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Dogger (1)
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Upper Jurassic
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Oxfordian (1)
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Tithonian (1)
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-
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Serra Geral Formation (3)
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Triassic (2)
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metal ores
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base metals (1)
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lead-zinc deposits (2)
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metals
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alkaline earth metals
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strontium
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Sr-87/Sr-86 (1)
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metasomatism (1)
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mineral deposits, genesis (3)
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mineral exploration (3)
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mineralogy (5)
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minerals (2)
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nodules (1)
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oxygen
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O-18 (1)
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O-18/O-16 (2)
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paleoclimatology (1)
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Paleozoic
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Carboniferous
-
Middle Carboniferous (1)
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Mississippian
-
Harrodsburg Limestone (1)
-
Lower Mississippian
-
Fort Payne Formation (1)
-
-
Ramp Creek Formation (1)
-
Upper Mississippian
-
Meramecian
-
Saint Louis Limestone (1)
-
Warsaw Formation (2)
-
-
-
-
Upper Carboniferous (1)
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Devonian
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Middle Devonian
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Givetian (1)
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paragenesis (2)
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petrology (1)
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reefs (1)
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sedimentary petrology (5)
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sedimentary rocks
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carbonate rocks
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dolostone (1)
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limestone (2)
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chemically precipitated rocks
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chert (2)
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evaporites (2)
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clastic rocks (1)
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sedimentary structures
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planar bedding structures
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laminations (1)
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secondary structures
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concretions (3)
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geodes (22)
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sedimentation (1)
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soils (1)
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South America
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Brazil
-
Rio Grande do Sul Brazil (4)
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-
Parana Basin (2)
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Uruguay (2)
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-
stratigraphy (1)
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sulfur
-
S-34/S-32 (4)
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tectonics (1)
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United States
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California
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San Luis Obispo County California (1)
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Illinois (3)
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Indiana
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Lawrence County Indiana (1)
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Monroe County Indiana (1)
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Iowa (1)
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Kentucky (1)
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Missouri (1)
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Oregon (1)
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Tennessee (1)
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rock formations
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Botucatu Formation (2)
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sedimentary rocks
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sedimentary rocks
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carbonate rocks
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dolostone (1)
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limestone (2)
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chemically precipitated rocks
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chert (2)
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evaporites (2)
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-
clastic rocks (1)
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-
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sedimentary structures
-
sedimentary structures
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planar bedding structures
-
laminations (1)
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secondary structures
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concretions (3)
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geodes (22)
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soils
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soils (1)
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GeoRef Categories
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1-20 OF 22 RESULTS FOR
geodes
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Journal Article
The genesis of agates and amethyst geodes
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 30 November 2019
The Canadian Mineralogist (2019) 57 (6): 867–883.
Journal Article
The origin of large gypsum crystals in the Geode of Pulpí (Almería, Spain)
Journal: Geology
Publisher: Geological Society of America
Published: 15 October 2019
Geology (2019) 47 (12): 1161–1165.
Journal Article
A new model of agate geode formation based on a combination of morphological features and silica sol–gel experiments
Journal: European Journal of Mineralogy
Published: 01 January 2018
European Journal of Mineralogy (2018) 30 (1): 97–106.
Journal Article
U/Pb dating of geodic calcite: new insights on Western Europe major tectonic events and associated diagenetic fluids
Céline Pisapia, Pierre Deschamps, Anne Battani, Stéphane Buschaert, Abel Guihou, Bruno Hamelin, Jacques Brulhet
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 02 October 2017
Journal of the Geological Society (2018) 175 (1): 60–70.
Journal Article
The origin of celestine–quartz–calcite geodes associated with a basaltic dyke, Makhtesh Ramon, Israel
MICHAEL ANENBURG, OR M. BIALIK, YEVGENY VAPNIK, HAZEL J. CHAPMAN, GILAD ANTLER, YARON KATZIR, MIKE J. BICKLE
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 29 October 2013
Geological Magazine (2014) 151 (5): 798–815.
Journal Article
Geochemical and scintillometric characterization and correlation of amethyst geode-bearing Paraná lavas from the Quaraí and Los Catalanes districts, Brazil and Uruguay
LÉO A. HARTMANN, WILSON WILDNER, LAUREN C. DUARTE, SANDRO K. DUARTE, JULIANA PERTILLE, KARINE R. ARENA, LAURA C. MARTINS, NORBERTO LESSA DIAS
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 19 July 2010
Geological Magazine (2010) 147 (6): 954–970.
Journal Article
Amethyst geodes in the basaltic flow from Triz quarry at Ametista do Sul (Rio Grande do Sul, Brazil): magmatic source of silica for the amethyst crystallizations
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 01 July 2007
Geological Magazine (2007) 144 (4): 731–739.
Journal Article
Now you see it, now you don't
Journal: Elements
Publisher: Mineralogical Society of America
Published: 01 February 2007
Elements (2007) 3 (1): 3–4.
Journal Article
Amethyst-bearing lava flows in the Paraná Basin (Rio Grande do Sul, Brazil): cooling, vesiculation and formation of the geodic cavities
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 01 January 2007
Geological Magazine (2007) 144 (1): 53–65.
Journal Article
Formation of gigantic gypsum crystals
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 01 July 2002
Journal of the Geological Society (2002) 159 (4): 347–350.
Journal Article
La mineralisation fluoree de type mississippi valley du Jebel Stah (Tunisie nord-orientale)
Publisher: Société Géologique de France
Published: 01 March 1998
Bulletin de la Société Géologique de France (1998) 169 (2): 163–175.
Journal Article
Evaporites; in situ sulfur source for rhythmically banded ore in the Cadjebut mississippi valley-type Zn-Pb deposit, Western Australia
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 May 1994
Economic Geology (1994) 89 (3): 467–492.
Journal Article
Quartz geodes; early diagenetic silicified anhydrite nodules related to dolomitization
Journal: Journal of Sedimentary Research
Publisher: SEPM Society for Sedimentary Geology
Published: 01 November 1987
Journal of Sedimentary Research (1987) 57 (6): 1054–1059.
Journal Article
Late Cretaceous quartz geodes after anhydrite from Burgos, Spain
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 01 March 1984
Geological Magazine (1984) 121 (2): 107–113.
Journal Article
Distribution of Mississippian geodes and geodal minerals in Kentucky
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 August 1977
Economic Geology (1977) 72 (5): 864–869.
Journal Article
Quartz replaced anhydrite nodules ('Bristol Diamonds') from the Triassic of the Bristol District
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 01 November 1976
Geological Magazine (1976) 113 (6): 569–574.
Journal Article
Feldspathic geodes near Black Mountain, western San Luis Obispo County, California
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 December 1975
American Mineralogist (1975) 60 (11-12): 1105–1112.
Journal Article
The origin of quartz geodes and cauliflower cherts through the silicification of anhydrite nodules
Journal: Journal of Sedimentary Research
Publisher: SEPM Society for Sedimentary Geology
Published: 01 September 1974
Journal of Sedimentary Research (1974) 44 (3): 885–903.
Journal Article
D/H and 18 O/ 16 O Ratios in Waters Contained in Geodes from the Basaltic Province of Rio Grande do Sul, Brazil
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 01 April 1974
GSA Bulletin (1974) 85 (4): 577–580.
Journal Article
Geodes and concretions from the Mississippian Warsaw Formation, Keokuk region, Iowa, Illinois, Missouri
Journal: Journal of Sedimentary Research
Publisher: SEPM Society for Sedimentary Geology
Published: 01 March 1964
Journal of Sedimentary Research (1964) 34 (1): 123–133.
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geodes
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