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NARROW
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
East Africa
-
Ethiopia (1)
-
Kenya
-
Kenya Rift valley (1)
-
Lake Magadi (1)
-
-
-
East African Lakes
-
Lake Magadi (1)
-
-
-
Arctic region
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Greenland
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East Greenland (1)
-
-
-
Asia
-
Far East
-
China (1)
-
Japan
-
Hokkaido (1)
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Honshu
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Fukushima Japan (1)
-
-
-
Korea
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South Korea
-
Pohang South Korea (1)
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-
-
Philippine Islands
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Luzon (1)
-
-
-
Indian Peninsula
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India (1)
-
-
Middle East
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Cyprus
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Troodos Massif (1)
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Iran
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Tehran Iran (1)
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Israel
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Negev (1)
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Turkey
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Anatolia (4)
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Ankara Turkey (3)
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Izmir Turkey (1)
-
-
-
-
Atlantic Ocean
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Mid-Atlantic Ridge (2)
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North Atlantic (1)
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Atlantic Ocean Islands
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Faeroe Islands (1)
-
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Australasia
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New Zealand
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Taupo volcanic zone (1)
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-
-
Canada
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Eastern Canada
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Maritime Provinces
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Nova Scotia (1)
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-
-
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Caribbean region
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West Indies
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Antilles
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Greater Antilles
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Cuba (1)
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Commonwealth of Independent States
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Georgian Republic (1)
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Russian Federation (1)
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Transcaucasia (1)
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Ukraine
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Ukrainian Carpathians (1)
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Eastern Hemisphere (1)
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Europe
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Carpathians
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Eastern Carpathians (1)
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Ukrainian Carpathians (1)
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Central Europe
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Austria
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Styria Austria (1)
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Slovakia (4)
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Georgian Republic (1)
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Southern Europe
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Bulgaria
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Bulgarian Rhodope Mountains (1)
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Greece
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Greek Aegean Islands
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Cyclades
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Santorin (1)
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Thera (2)
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Samos (1)
-
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Greek Thrace (1)
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Italy
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Sardinia Italy
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Logudoro (2)
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-
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Rhodope Mountains
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Bulgarian Rhodope Mountains (1)
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Romania (1)
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Serbia (2)
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Thrace
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Greek Thrace (1)
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Transcaucasia (1)
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Ukraine
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Ukrainian Carpathians (1)
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Western Europe
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France
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Armorican Massif (1)
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Paris Basin (3)
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Seine-Maritime France
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Rouen France (1)
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Scandinavia
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Norway (1)
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United Kingdom
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Great Britain
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England
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Isle of Wight England (1)
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Wales (1)
-
-
-
-
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Indian Ocean
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Madagascar Basin (1)
-
-
Mediterranean region
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Aegean Islands
-
Greek Aegean Islands
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Cyclades
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Santorin (1)
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Thera (2)
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Samos (1)
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Mexico
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Durango Mexico (1)
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Guanajuato Mexico (1)
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Sonora Mexico (1)
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Trans-Mexican volcanic belt (1)
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North America
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Great Plains (1)
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Rocky Mountains
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U. S. Rocky Mountains (1)
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North Island (1)
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Pacific Ocean
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North Pacific
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Northwest Pacific
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Japan Sea (2)
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-
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West Pacific
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Northwest Pacific
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Japan Sea (2)
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-
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South America
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Argentina (1)
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Chile (1)
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Patagonia (1)
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United States
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Arizona (1)
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California
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Alameda County California
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Lawrence Livermore National Laboratory (1)
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Fresno County California (1)
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Colorado (1)
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Idaho (1)
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Nebraska (1)
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Nevada
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Esmeralda County Nevada (1)
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Nevada Test Site (5)
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Nye County Nevada
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Pahute Mesa (1)
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Yucca Mountain (4)
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Pershing County Nevada
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Lovelock Nevada (1)
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New Mexico (1)
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Oregon
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Malheur County Oregon (1)
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South Dakota (1)
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Texas
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Atascosa County Texas (1)
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Trans-Pecos (1)
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U. S. Rocky Mountains (1)
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Utah (1)
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Washakie Basin (1)
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Western U.S. (1)
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Wyoming
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Converse County Wyoming (1)
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Sweetwater County Wyoming (2)
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-
Yellowstone National Park (1)
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commodities
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boron deposits (1)
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clay deposits (1)
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construction materials
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cement materials (2)
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industrial minerals (8)
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metal ores
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polymetallic ores (1)
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mineral deposits, genesis (2)
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mineral exploration (1)
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mineral resources (1)
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oil and gas fields (1)
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petroleum
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natural gas (1)
-
-
zeolite deposits (7)
-
-
elements, isotopes
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carbon
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C-14 (1)
-
-
chemical ratios (5)
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isotope ratios (2)
-
isotopes
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radioactive isotopes
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C-14 (1)
-
Sr-90 (1)
-
-
stable isotopes
-
Nd-144/Nd-143 (1)
-
Sr-87/Sr-86 (2)
-
-
-
metals
-
actinides
-
uranium (1)
-
-
alkali metals
-
cesium (4)
-
potassium (5)
-
sodium (8)
-
-
alkaline earth metals
-
barium (3)
-
calcium (8)
-
magnesium (6)
-
radium (1)
-
strontium
-
Sr-87/Sr-86 (2)
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Sr-90 (1)
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-
-
aluminum (1)
-
chromium (1)
-
copper (2)
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iron
-
ferric iron (1)
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-
manganese (1)
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nickel (1)
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platinum group
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ruthenium (1)
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rare earths
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europium (1)
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lanthanum (1)
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neodymium
-
Nd-144/Nd-143 (1)
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-
-
silver (3)
-
zinc (1)
-
-
nitrogen (1)
-
-
fossils
-
microfossils (1)
-
Plantae
-
algae
-
Coccolithophoraceae (1)
-
nannofossils
-
Nannoconus (1)
-
-
-
-
thallophytes (1)
-
-
geochronology methods
-
tree rings (1)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene (1)
-
Pleistocene (1)
-
upper Quaternary (1)
-
-
Tertiary
-
Neogene
-
Miocene
-
Crater Flat Tuff (1)
-
Paintbrush Tuff (2)
-
Topopah Spring Member (1)
-
-
Pliocene (3)
-
-
Paleogene
-
Eocene
-
Bracklesham Group (1)
-
Flournoy Formation (1)
-
Green River Formation (1)
-
Lake Gosiute (1)
-
middle Eocene
-
Tyee Formation (1)
-
-
upper Eocene
-
Jackson Group (1)
-
-
-
Oligocene
-
upper Oligocene (1)
-
-
Paleocene (1)
-
White River Group (1)
-
-
-
-
Mesozoic
-
Cretaceous
-
Mishash Formation (1)
-
Upper Cretaceous
-
Campanian
-
upper Campanian (1)
-
-
Cenomanian (2)
-
Moreno Formation (1)
-
Senonian (2)
-
Turonian (2)
-
-
-
Jurassic
-
Lower Jurassic (1)
-
-
-
-
igneous rocks
-
igneous rocks
-
volcanic rocks
-
basalts
-
trap rocks (1)
-
-
dacites (1)
-
glasses
-
perlite (1)
-
volcanic glass (5)
-
-
pyroclastics
-
ash-flow tuff (1)
-
ignimbrite (2)
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tuff (34)
-
welded tuff (1)
-
-
rhyolites (2)
-
-
-
ophiolite (1)
-
volcanic ash (2)
-
-
metamorphic rocks
-
metamorphic rocks
-
quartzites (1)
-
-
ophiolite (1)
-
-
minerals
-
borates (1)
-
carbonates
-
calcite (6)
-
dolomite (1)
-
gaylussite (1)
-
malachite (1)
-
strontianite (1)
-
-
halides
-
chlorides
-
halite (1)
-
-
fluorides
-
fluorite (1)
-
-
-
minerals (35)
-
oxides
-
corundum (1)
-
hematite (1)
-
hydroxides
-
aluminum hydroxides (1)
-
oxyhydroxides (1)
-
-
ilmenite (1)
-
magnetite (2)
-
portlandite (2)
-
-
silicates
-
aluminosilicates (1)
-
chain silicates
-
amphibole group
-
clinoamphibole
-
hornblende (1)
-
-
-
pyroxene group
-
clinopyroxene
-
aegirine (1)
-
-
-
-
framework silicates
-
feldspar group
-
alkali feldspar
-
K-feldspar (4)
-
-
plagioclase
-
albite (1)
-
-
-
silica minerals
-
chalcedony (1)
-
cristobalite (7)
-
opal
-
opal-CT (6)
-
-
quartz (5)
-
tridymite (1)
-
-
zeolite group
-
analcime (20)
-
chabazite (8)
-
clinoptilolite (159)
-
epistilbite (1)
-
erionite (8)
-
ferrierite (3)
-
heulandite (32)
-
laumontite (5)
-
mordenite (28)
-
phillipsite (10)
-
stilbite (2)
-
wairakite (1)
-
-
-
sheet silicates
-
chlorite group
-
chlorite (2)
-
-
clay minerals
-
beidellite (1)
-
halloysite (1)
-
kaolinite (7)
-
montmorillonite (14)
-
nontronite (2)
-
smectite (17)
-
vermiculite (2)
-
-
illite (9)
-
mica group
-
biotite (3)
-
celadonite (2)
-
glauconite (2)
-
muscovite (2)
-
-
palygorskite (2)
-
sepiolite (3)
-
-
-
sulfides
-
pyrite (2)
-
-
-
Primary terms
-
absolute age (1)
-
Africa
-
East Africa
-
Ethiopia (1)
-
Kenya
-
Kenya Rift valley (1)
-
Lake Magadi (1)
-
-
-
East African Lakes
-
Lake Magadi (1)
-
-
-
Arctic region
-
Greenland
-
East Greenland (1)
-
-
-
Asia
-
Far East
-
China (1)
-
Japan
-
Hokkaido (1)
-
Honshu
-
Fukushima Japan (1)
-
-
-
Korea
-
South Korea
-
Pohang South Korea (1)
-
-
-
Philippine Islands
-
Luzon (1)
-
-
-
Indian Peninsula
-
India (1)
-
-
Middle East
-
Cyprus
-
Troodos Massif (1)
-
-
Iran
-
Tehran Iran (1)
-
-
Israel
-
Negev (1)
-
-
Turkey
-
Anatolia (4)
-
Ankara Turkey (3)
-
Izmir Turkey (1)
-
-
-
-
Atlantic Ocean
-
Mid-Atlantic Ridge (2)
-
North Atlantic (1)
-
-
Atlantic Ocean Islands
-
Faeroe Islands (1)
-
-
Australasia
-
New Zealand
-
Taupo volcanic zone (1)
-
-
-
boron deposits (1)
-
Canada
-
Eastern Canada
-
Maritime Provinces
-
Nova Scotia (1)
-
-
-
-
carbon
-
C-14 (1)
-
-
Caribbean region
-
West Indies
-
Antilles
-
Greater Antilles
-
Cuba (1)
-
-
-
-
-
Cenozoic
-
Quaternary
-
Holocene (1)
-
Pleistocene (1)
-
upper Quaternary (1)
-
-
Tertiary
-
Neogene
-
Miocene
-
Crater Flat Tuff (1)
-
Paintbrush Tuff (2)
-
Topopah Spring Member (1)
-
-
Pliocene (3)
-
-
Paleogene
-
Eocene
-
Bracklesham Group (1)
-
Flournoy Formation (1)
-
Green River Formation (1)
-
Lake Gosiute (1)
-
middle Eocene
-
Tyee Formation (1)
-
-
upper Eocene
-
Jackson Group (1)
-
-
-
Oligocene
-
upper Oligocene (1)
-
-
Paleocene (1)
-
White River Group (1)
-
-
-
-
chemical analysis (1)
-
clay deposits (1)
-
clay mineralogy (74)
-
construction materials
-
cement materials (2)
-
-
crust (1)
-
crystal chemistry (12)
-
crystal growth (4)
-
crystal structure (17)
-
data processing (2)
-
deformation (1)
-
diagenesis (27)
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Eastern Hemisphere (1)
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ecology (1)
-
economic geology (2)
-
electron microscopy (1)
-
engineering geology (1)
-
Europe
-
Carpathians
-
Eastern Carpathians (1)
-
Ukrainian Carpathians (1)
-
-
Central Europe
-
Austria
-
Styria Austria (1)
-
-
Slovakia (4)
-
-
Georgian Republic (1)
-
Southern Europe
-
Bulgaria
-
Bulgarian Rhodope Mountains (1)
-
-
Greece
-
Greek Aegean Islands
-
Cyclades
-
Santorin (1)
-
Thera (2)
-
-
Samos (1)
-
-
Greek Thrace (1)
-
-
Italy
-
Sardinia Italy
-
Logudoro (2)
-
-
-
Rhodope Mountains
-
Bulgarian Rhodope Mountains (1)
-
-
Romania (1)
-
Serbia (2)
-
-
Thrace
-
Greek Thrace (1)
-
-
Transcaucasia (1)
-
Ukraine
-
Ukrainian Carpathians (1)
-
-
Western Europe
-
France
-
Armorican Massif (1)
-
Paris Basin (3)
-
Seine-Maritime France
-
Rouen France (1)
-
-
-
Scandinavia
-
Norway (1)
-
-
United Kingdom
-
Great Britain
-
England
-
Isle of Wight England (1)
-
-
Wales (1)
-
-
-
-
-
geochemistry (55)
-
ground water (3)
-
igneous rocks
-
volcanic rocks
-
basalts
-
trap rocks (1)
-
-
dacites (1)
-
glasses
-
perlite (1)
-
volcanic glass (5)
-
-
pyroclastics
-
ash-flow tuff (1)
-
ignimbrite (2)
-
tuff (34)
-
welded tuff (1)
-
-
rhyolites (2)
-
-
-
Indian Ocean
-
Madagascar Basin (1)
-
-
industrial minerals (8)
-
isotopes
-
radioactive isotopes
-
C-14 (1)
-
Sr-90 (1)
-
-
stable isotopes
-
Nd-144/Nd-143 (1)
-
Sr-87/Sr-86 (2)
-
-
-
lava (2)
-
marine geology (1)
-
Mediterranean region
-
Aegean Islands
-
Greek Aegean Islands
-
Cyclades
-
Santorin (1)
-
Thera (2)
-
-
Samos (1)
-
-
-
-
Mesozoic
-
Cretaceous
-
Mishash Formation (1)
-
Upper Cretaceous
-
Campanian
-
upper Campanian (1)
-
-
Cenomanian (2)
-
Moreno Formation (1)
-
Senonian (2)
-
Turonian (2)
-
-
-
Jurassic
-
Lower Jurassic (1)
-
-
-
metal ores
-
polymetallic ores (1)
-
-
metals
-
actinides
-
uranium (1)
-
-
alkali metals
-
cesium (4)
-
potassium (5)
-
sodium (8)
-
-
alkaline earth metals
-
barium (3)
-
calcium (8)
-
magnesium (6)
-
radium (1)
-
strontium
-
Sr-87/Sr-86 (2)
-
Sr-90 (1)
-
-
-
aluminum (1)
-
chromium (1)
-
copper (2)
-
iron
-
ferric iron (1)
-
-
manganese (1)
-
nickel (1)
-
platinum group
-
ruthenium (1)
-
-
rare earths
-
europium (1)
-
lanthanum (1)
-
neodymium
-
Nd-144/Nd-143 (1)
-
-
-
silver (3)
-
zinc (1)
-
-
metamorphic rocks
-
quartzites (1)
-
-
metasomatism (24)
-
Mexico
-
Durango Mexico (1)
-
Guanajuato Mexico (1)
-
Sonora Mexico (1)
-
Trans-Mexican volcanic belt (1)
-
-
mineral deposits, genesis (2)
-
mineral exploration (1)
-
mineral resources (1)
-
mineralogy (14)
-
minerals (35)
-
nitrogen (1)
-
North America
-
Great Plains (1)
-
Rocky Mountains
-
U. S. Rocky Mountains (1)
-
-
-
ocean basins (1)
-
Ocean Drilling Program
-
Leg 127
-
ODP Site 795 (1)
-
-
-
ocean floors (1)
-
oceanography (1)
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oil and gas fields (1)
-
Pacific Ocean
-
North Pacific
-
Northwest Pacific
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Japan Sea (2)
-
-
-
West Pacific
-
Northwest Pacific
-
Japan Sea (2)
-
-
-
-
paleogeography (1)
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paragenesis (3)
-
petroleum
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natural gas (1)
-
-
petrology (6)
-
phase equilibria (10)
-
Plantae
-
algae
-
Coccolithophoraceae (1)
-
nannofossils
-
Nannoconus (1)
-
-
-
-
pollution (11)
-
rock mechanics (1)
-
sedimentary petrology (15)
-
sedimentary rocks
-
carbonate rocks
-
chalk (2)
-
limestone (1)
-
-
chemically precipitated rocks
-
chert (1)
-
evaporites
-
salt (1)
-
-
phosphate rocks (2)
-
siliceous sinter (1)
-
-
clastic rocks
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arenite (1)
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bentonite (6)
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conglomerate (1)
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diatomite (1)
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eolianite (1)
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mudstone (1)
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sandstone (4)
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shale (2)
-
-
coal
-
lignite (1)
-
-
-
sedimentation (3)
-
sediments
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clastic sediments (1)
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marine sediments (1)
-
-
soils (4)
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South America
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Argentina (1)
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Chile (1)
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Patagonia (1)
-
-
spectroscopy (2)
-
springs (3)
-
stratigraphy (1)
-
thallophytes (1)
-
thermal analysis (4)
-
thermal waters (1)
-
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GeoRef Categories
Era and Period
Epoch and Age
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Date
Availability
clinoptilolite
Abstract Volcaniclastic rocks are commonly overlooked as reservoirs or seals in hydrocarbon plays because their compositions are variably unstable and reactive during burial diagenesis. This study investigated the petrography and petrophysical characteristics of 60 volcaniclastic and four siliciclastic samples from three Paleogene volcanic provinces – East Greenland, Faroe Islands and Ethiopia. The volcaniclastic samples have highly variable helium porosities (average 25.2%), but negligible total optical porosities (average 1.9%), implying reduced reservoir potential. The samples have, however, highly variable air permeabilities (average 11 mD), suggesting that they could make tight reservoirs. The permeabilities are related to either early calcite cements or the devitrification of volcanic glass. Mercury injection capillary pressure data were collected for a subset of 33 samples that at leakage/breakthrough saturations could, under near-surface conditions, hold oil column heights of between 4 and 1181 m (average 240 m). The best seals consistently have zeolite contents of >20 vol% owing to their small pore throat radii. Conversely, the worst seals are dominated by smectite and a conspicuous absence of zeolite minerals. The zeolite-rich volcaniclastic rocks could, therefore, make good shallow seals. These features also apply to CO 2 storage, but questions remain about the reactivity of the volcanic material and secondary minerals with injected CO 2 , but also the adsorbent properties of zeolites, particularly clinoptilolite, in the presence of CO 2 .