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The AAPG/Datapages Combined Publications Database

Showing 675 Results. Searched 200,673 documents.

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Controls on the Deposition of Bedded Halite within the Haynesville Formation, Champion-Klepac No. 1 Core, Southwestern Alabama

Rachel A. Eustice, Lynton S. Land

GCAGS Transactions

..." toward higher bromide concentrations. Thus, the bromide concentrations are buffered to approximately 85 ppm throughout the chevron halite zone. Within...

1994

Geochemistry and origin of shallow gas in the Baise Basin, southern China

Yanhua Shuai, Ping’an Peng, Yanrong Zou, Shuichang Zhang, Ling Huang

CSPG Bulletin

..., p. 8–12. Hanor, J S. 2001. Reactive transport involving rock-buffered fluids of varying salinity. Geochimica et Cosmochimica Acta, v. 65, p. 3721...

2015

Mineral Buffering of Contaminated Ground Water Compositions at a Hazardous Waste Site in Southwestern Louisiana

Jeffrey S. Hanor , Kathleen M. McManus ,, Vishnu Ranganathan ,, Shaobing Su

GCAGS Transactions

... were partially buffered in terms of pH, Na+, K+, Mg2+, Ca2+, and dissolved silica by metastable equilibrium with respect to the mineral assemblage...

1995

Clay Minerals Of The Silurian Clinton Ironstones, New York State

Robert schoen

Journal of Sedimentary Research (SEPM)

..., M. L., 1960, Iron oxide removal from soils and clays by a dithionite-citrate system buffered with sodium bicarbonate: Clays and Clay Minerals; Proc...

1964

Modeling Hydrogen Geochemistry Using Fundamental Quantum-mechanical Approaches to Enable Hydrogen Geostorage

Vardhan Satalkar, Deepak Devegowda, Chandra Rai, Son Dang

Unconventional Resources Technology Conference (URTEC)

.... Giffaut, “Kinetics of pyrite to pyrrhotite reduction by hydrogen in calcite buffered solutions between 90 and 180°c: Implications for nuclear waste...

2023

Evaluation of Hydrogen Interaction with Mudrocks: Implication for Geo-Storage

Sidi Mamoudou, Son Dang, Mark Curtis, Chandra Rai

Unconventional Resources Technology Conference (URTEC)

... to pyrrhotite reduction by hydrogen in calcite buffered solutions between 90 and 180°C: Implications for nuclear waste disposal. Geochimica et Cosmochimica...

2024

Assessing Hydrogen Sulfide Generation from Pyrite Reduction: Implications for Underground Hydrogen Storage

Rana AL Homoud, Marcos Vitor Barbosa Machado, Hugh Daigle

Unconventional Resources Technology Conference (URTEC)

...e Buffered Solutions between 90 and 180°C: Implications for Nuclear Waste Disposal. Geochimica et Cosmochimica Acta 2010, 74, 2894–2914, doi:10.1016/...

2024

Sedimentary Components of Northwest Pacific Pelagic Sediments

Robert K. Oser

Journal of Sedimentary Research (SEPM)

...) and the remaining samples were collected on U. S. Naval Oceanographic Office surveys of 1968 and 1969. Samples were treated with buffered (pH 7) 10...

1972

Pore Fluid and Mineralogical Studies of Recent Marine Sediments: Bauer Depression Region of East Pacific Rise

James L. Bischoff , F. L. Sayles

Journal of Sedimentary Research (SEPM)

..., A., AND DISTECHE, S., 1967. The effect of pressure on the dissociation of carbonic acid from measurements with buffered glass electrode cells, Jour...

1972

Formation of Barrel Concretions around Methane Seepage Pathways in Upper Middle Eocene Shelf Sediments, Stone City Bluff, Texas

Jennifer K. Hendricks, Thomas E. Yancey, James E. Flis, Christopher J. Flis, Ethan L. Grossman

GCAGS Transactions

... are buffered from dissolution and carbonate can persist and be retained in the sediment. These conditions occur in the fine grained marine sediment layers...

2012

Clay Mineral Changes in Antarctic Deep-Sea Sediments and Cenozoic Climatic Events

Marian B. Jacobs

Journal of Sedimentary Research (SEPM)

.... 170, p. 1085-1087. MEHRA, O. P., AND M. L. JACKSON, 1960, Iron oxide removal from soils and clays by a dithionitecitrate system buffered with sodium...

1974

Distribution of Microborings Within Continental Margin Sediments of the Southeastern United States

Brian D. Edwards , Ronald D. Perkins

Journal of Sedimentary Research (SEPM)

... microboring generally requires fixation of the study samples in buffered formaldehyde at the time of collection. As the samples available to us...

1974

Genesis of Chlorite Pellets from Mesozoic Bedded Cherts of Sicily

Marco Leone, Rosario Alaimo, Salvatore Calderone

Journal of Sedimentary Research (SEPM)

... pellets were separated from samples of chert beds by means of a magnetic separator, and from the Fe-Mn carbonate samples by acetic acid buffered with sodium...

1975

The Occurrence and Chemical Composition of Recent Fe-Rich Mixed Carbonates in a River Bog

Dieke Postma

Journal of Sedimentary Research (SEPM)

... not to be buffered by the iron carbonate. In the oxidized zone, the pH generally ranges between 4.5 and 5.5. These lower pH values are the result of oxidation of some...

1977

Hydrology of Uranium Deposits in Calcretes of Western Australia

A. J. Gaskin, C. R. M. Butt, R. L. Deutscher, R. C. Horwitz, A. W. Mann

AAPG Special Volumes

... in a highly leached environment buffered by a complex set of factors including the presence of sufficient bicarbonate ion to prevent the deposition...

1981

Diagenetic Albitization of Detrital K-Keldspars in Jurassic, Lower Cretaceous and Tertiary Clastic Reservoir Rocks from Offshore Norway, II. Formation Water Chemistry and Kinetic Considerations

P. Aagaard , P. K. Egeberg , G. C. Saigal , S. Morad , K. Bjorlykke

Journal of Sedimentary Research (SEPM)

... will be buffered along the univariant equilibrium line; see Figure 3. During burial, the pore water will respond chemically by increasing aK+/aNa...

1990

Oxygen Isotopic Analysis of Diagenetic Quartz Overgrowths from the Brent Sands: A Comparison of Two Preparation Methods

J. F. Brint , P. J. Hamilton, R. S. Haszeldine, A. E. Fallick, S. Brown

Journal of Sedimentary Research (SEPM)

... (buffered to pH = 5) to remove carbonates (Jackson 1979). Each sample was then size separated (< 20, 20-50, 50-85, 85-160, 160-250, 250-500 and > 500 microns...

1991

Effects of Sulfate Reduction on CaCO3 Dissolution and Precipitation in Mixing-Zone Fluids

Ronald K. Stoessell

Journal of Sedimentary Research (SEPM)

... reduction are strongly pH buffered, requiring substantial amounts of CaCO3 dissolution and precipitation to reach equilibrium. The pH is locked into a narrow...

1992

Great Bahama Bank Aragonitic Muds: Mostly Inorganically Precipitated, Mostly Exported

John D. Milliman , Deborah Freile , Randolph P. Steinen , R. Jude Wilber

Journal of Sedimentary Research (SEPM)

... the banktop and the leeward slope also were analyzed. Algal samples were soaked in buffered H2O2 to remove organic matter and then oven-dried. Each sediment...

1993

Origin of Secondary Porosity and Cement Distribution in a Sandstone/Shale Sequence from the Frio Formation (Oligocene): Part 2. Aspects of Porosity Modification

G. K. Moncure, R. W. Lahann, R. M. Siebert

AAPG Special Volumes

...------------------------ at low concentrations because aluminum was buffered to low levels by the reaction of smectite to illite, an aluminum-consuming...

1984

A Method for the Determination of Nitrogen in Clays, with Application to the Burial Diagenesis of Shales: RESEARCH METHOD PAPER

Paul A. Schroeder , Ellery D. Ingall

Journal of Sedimentary Research (SEPM)

... and Levinson 1986). (5) Both iron oxide and hydroxide coatings are removed using a 0.3 M Na citrate bicarbonate solution (buffered). A solution...

1994

Multiple Authigenesis of K-Feldspar in Sandstones: Evidence from the Cretaceous Areado Formation, Sao Francisco Basin, Central Brazil

L.F. De Ros , G.N.C. Sgarbi , S. Morad

Journal of Sedimentary Research (SEPM)

... oxide removal from soils and clay by a dithionite citrate system buffered with sodium bicarbonate, in Swineford, A., ed., Clays and Clay Minerals...

1994

Carbonate Botryoids in Lower Devonian Amygdaloidal Basalts: Evidence for Precipitation of High-Magnesium Calcite from Heated and Volcanic CO2-Buffered Marine Waters

Denis Lavoie

Journal of Sedimentary Research (SEPM)

... waters would have been rapidly buffered and led to precipitation of 13C-depleted calcites. Magmatic CO2 is also recorded in the isotopic ratio...

1995

Assessing Mineralogical and Geochemical Heterogeneity in the Sub 63 Micron Size Fraction of Holocene Lime Muds

Julian E. Andrews, Socrates Christidis , Paul F. Dennis

Journal of Sedimentary Research (SEPM)

... for sieving was buffered to pH 8 with NaOH pellets to avoid selective dissolution of the metastable Mg-calcite (mean, 12 mol % MgCO3) and aragonite...

1997

Influence of Depth, Temperature, and Geologic Age on Porosity of Quartzose Sandstone

John C. Maxwell

AAPG Bulletin

... alkaline, highly buffered by contained salts, and hence probably behave similarly toward quartz through rather large changes in composition. Presumably...

1964

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