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NARROW
Format
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Journal
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Section
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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North Africa
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Algeria (1)
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Tunisia (1)
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Southern Africa
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South Africa (1)
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West Africa
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Senegal (1)
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Asia
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Baikal rift zone (1)
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Buryat Russian Federation (1)
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Far East
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China
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Chongqing China (1)
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Japan
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Honshu
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Atlantic Ocean
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North Atlantic
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Canada
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Eastern Canada
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Western Canada
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Commonwealth of Independent States
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Russian Federation
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Baikal rift zone (1)
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Irkutsk Russian Federation (1)
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Magadan Russian Federation (1)
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Rostov Russian Federation (1)
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Zabaykalskiy Russian Federation
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Ukraine
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Cooper Basin (1)
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Spain
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Rhodope Mountains
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Romania
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Serbia (1)
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Ukraine
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Ukrainian Carpathians (1)
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Western Europe
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Belgium (1)
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France
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Mexico
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North America
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Pacific Ocean
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West Pacific
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Northwest Pacific
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Brazil
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United States
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Alabama
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Arizona
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Arkoma Basin (1)
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Atlantic Coastal Plain (2)
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California
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Fresno County California
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Riverside County California
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San Francisco County California
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Tuolumne County California (1)
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Colorado
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Eastern U.S.
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Northeastern U.S. (1)
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Southeastern U.S. (2)
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Florida
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Georgia (1)
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Illinois
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DeKalb County Illinois (2)
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Kansas (1)
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Kentucky (1)
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Louisiana (1)
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Midwest (1)
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Missouri
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Lawrence County Missouri (1)
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Montana
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Cascade County Montana (1)
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Chouteau County Montana (1)
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Silver Bow County Montana
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Nebraska (1)
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Nevada
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Carlin Trend (1)
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Nye County Nevada
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Yucca Mountain (4)
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New Mexico
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North Dakota (1)
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Ohio River (1)
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Oklahoma (2)
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Ozark Mountains (1)
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Pennsylvania
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Chester County Pennsylvania (1)
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Powder River basin (1)
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South Carolina
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Aiken County South Carolina
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Savannah River Site (2)
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Tennessee
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Sevier County Tennessee (1)
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Tennessee Valley (1)
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Texas
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Bexar County Texas
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San Antonio Texas (1)
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Dallas County Texas
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Tarrant County Texas
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Utah (2)
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Washington
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Western U.S. (1)
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Wisconsin (1)
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commodities
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brines (2)
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construction materials
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geothermal energy (1)
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glass materials (1)
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metal ores
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water resources (2)
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elements, isotopes
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carbon
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organic carbon (6)
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chemical elements (2)
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chemical ratios (4)
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halogens
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bromine
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chlorine
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chloride ion (6)
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fluorine
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fluoride ion (3)
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iodine
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I-129 (1)
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hydrogen
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D/H (1)
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tritium (1)
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incompatible elements (2)
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isotope ratios (2)
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isotopes
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radioactive isotopes
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C-14 (4)
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I-129 (1)
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Sr-90 (2)
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Tc-99 (5)
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tritium (1)
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stable isotopes
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Al-27 (1)
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C-13 (1)
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C-13/C-12 (2)
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D/H (1)
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Fe-57 (1)
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S-32 (1)
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Si-29 (1)
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metals
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actinides
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neptunium (4)
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plutonium
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Pu-239 (1)
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thorium (4)
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uranium
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U-234 (1)
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alkali metals
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lithium (4)
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potassium (3)
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Invertebrata
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geologic age
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Cenozoic
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Tertiary
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Paleogene
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lower Paleogene (1)
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Shahejie Formation (1)
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Mesozoic
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Mancos Shale (1)
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Carlile Shale (1)
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Eagle Ford Formation (1)
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Lewis Shale (1)
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Pierre Shale (1)
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Sharon Springs Member (1)
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Turonian
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upper Turonian (1)
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Jurassic
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Fernie Formation (1)
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Lower Jurassic
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Nordegg Member (1)
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Oxford Clay (2)
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Posidonia Shale (2)
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Bossier Formation (1)
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Triassic
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Upper Triassic
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Mercia Mudstone (2)
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Vaca Muerta Formation (1)
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Yanshanian (3)
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Paleozoic
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Berea Sandstone (1)
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Carboniferous
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Huanglong Formation (1)
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Mississippian
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Barnett Shale (2)
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Madison Group (1)
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Upper Mississippian
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Fayetteville Formation (1)
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Pennsylvanian (2)
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Upper Carboniferous
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Devonian
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Upper Devonian
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New Albany Shale (1)
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Ordovician
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Upper Ordovician
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Wufeng Formation (2)
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Permian
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Qixia Formation (1)
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Wolfcampian (1)
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Maokou Formation (1)
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Upper Permian
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Raniganj Formation (1)
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Silurian
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Lower Silurian (3)
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upper Paleozoic
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Antrim Shale (1)
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Woodford Shale (1)
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Precambrian
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upper Precambrian
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Proterozoic
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Great Oxidation Event (1)
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igneous rocks
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Primary terms
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Paleozoic
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GeoRef Categories
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sorption
Binding mechanisms of Y and HREE sorption on birnessite: New insights into the formation and sustainable development of regolith-hosted REE deposits Available to Purchase
Estimating Background Threshold Values for Risk Assessment Open Access
Pore structure–transport relationships in the Bowland Shale Open Access
Abstract Shale rocks are highly structurally and chemically heterogeneous, such that the pore structure–transport relationship is complex. Shales typically have porosity over many length-scales from the molecular up to macroscopic fractures. This work utilizes gas overcondensation to probe pore sizes from micropores to very large macropores all in the same experiment without the potential for damage due to high pressures when conducting mercury porosimetry. Indeed, the Bowland Shale samples studied here are generally inaccessible to mercury intrusion. The gas overcondensation method can also be augmented using scanning loops to assess the spatial juxtaposition of very different pore sizes, and this has been used to determine that some large macropores are shielded by pore necks less than 4 nm in size in the Bowland Shale. In addition, the adsorption calorimetry method has been used to assess the accessibility of the void space. It has been found that mass transport is limited by particular ‘hour-glass’-like pore necks that fill at quite low saturation, and thus present a barrier to molecular migration. The shielding of macroporosity by narrow necks was particularly significant for the Above Marine Band sample, with lower shielding observed in the Marine Band and Below Marine Band materials.
Interfacial interactions controlling adsorption of metal cations on montmorillonite Available to Purchase
Effects of light hydrocarbons and extractable organic matter on the methane sorption capacity of shales Available to Purchase
Sorption of Congo Red anionic dye on natural hydrotalcite and stichtite: kinetics and equilibrium Available to Purchase
Nanometer-scale pore structure and the Monterey Formation: A new tool to investigate silica diagenesis Available to Purchase
ABSTRACT The Monterey Formation and related formations in California have long been the subject of field and laboratory studies on silica diagenesis. Biogenic or amorphous silica (opal-A) alters to a more-ordered opal-CT and eventually to the crystalline end member, quartz, with increasing burial depth and temperature. Low-pressure nitrogen sorption serves as an indicator of silica alteration by detecting the nanometer-scale pore structures associated with opal-CT while excluding contributions from larger pores. To apply this method, calibrations with known compositions are not required, sample preparation and measurements are straightforward, hazardous waste is not generated (as with mercury porosimetry), and subtle changes in silica phase are readily detected. Nitrogen desorption isotherms, collected on mini cores (~0.8 cm diameter × 1 cm) after outgassing at 50 °C and processed using the Barrett-Joyner-Halenda method, provide nanometer-scale pore throat size distributions (nPSD), pore volumes (nPV), and surface areas (nSA). A scatter plot of nPV and nSA reveals two distinct trends. Samples with more nSA per unit volume contain opal-CT, either in transition from opal-A or completely converted. The other nSA trend consists of opal-A and quartz samples in the small nSA and nPV range, whereas samples with small nSA and large nPV also contain opal-CT and are in transition to quartz. These distinct trends are also apparent in the nPSD. Samples with more nSA exhibit a peak between 4 and 10 nm, whereas samples with less nSA have a broad peak between 10 and 100 nm if they contain opal-CT. Images collected via scanning electron microscopy reveal that opal-CT morphologies account for these differences.