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The AAPG/Datapages Combined Publications Database

Showing 18,792 Results. Searched 200,599 documents.

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Pore-scale Evaluation of Nuclear Magnetic Resonance Measurements in Organic-Rich Mudrocks Using Numerical Modeling

Saurabh Tandon, Zoya Heidari, Hugh Daigle

Unconventional Resources Technology Conference (URTEC)

... of magnitude higher than that for WMT model to get comparable values of surface relaxation coefficients. (5) WMT model predicts that surface relaxation...

2017

Hydraulic Sorting of Heavy-Mineral Grains by Swash on a Medium-Sand Beach

Michael G. Hughes, Jock B. Keene, Rebecca G. Joseph

Journal of Sedimentary Research (SEPM)

... beaches, where incident swell frequencies dominate the wave spectrum at the shoreline (Hughes 1992; Hughes et al. 1997). Moreover, the magnitude...

2000

Authigenesis of Impact Spheroids in the K/T Boundary Clay from Italy: New Constraints for High-Resolution Stratigraphy of Terminal Cretaceous Events

Alessandro Montanari

Journal of Sedimentary Research (SEPM)

... been found in a 4-m interval containing the K/T boundary. These peaks are 1-2 orders of magnitude smaller than those reported by Crocket et al. (1988...

1991

Depositional Systems, Biostratigraphy and Sequence Stratigraphy of Lower Cambrian Grand Cycles, Southwestern Great Basin

Jeffrey F. Mount, Donna L. Hunt, Lawrence R. Greene, Jennifer Dienger

Pacific Section SEPM

... of the transition from rift-phase subsidence to thermotectonic subsidence associated with continental separation remains in dispute. This uncertainty stems...

1991

Alluvial Fan Sequence and Megasequence Models: With Examples From Westphalian D — Stephanian B Coalfields, Northern Spain

Alan P. Heward

Dallas Geological Society

... event magnitude, and an absence of reworking by subsequent floods. “The prime requisite of fan formation is the setting of highland and lowland side...

1977

Alluvial Fan Sequence and Megasequence Models: With Examples From Westphalian D — Stephanian B Coalfields, Northern Spain

Alan P. Heward

CSPG Special Publications

... event magnitude, and an absence of reworking by subsequent floods. “The prime requisite of fan formation is the setting of highland and lowland side...

1977

Quantitative analysis of slip-induced dilation with application to fault seal

Scott J. Wilkins, Stephen J. Naruk

AAPG Bulletin

.... 17271747.Panda, M. N., and L. W. Lake, 1994, Estimation of single-phase permeability from parameters of particle-size distribution: AAPG Bulletin, v. 78, p...

2007

Inherited Grain-Rimming Clays in Sandstones from Eolian and Shelf Environments: Their Origin and Control on Reservoir Properties

Michael D. Wilson

Special Publications of SEPM

... spectrum iron in both this and the area X ray EDX analysis for the shown in D is virtually identical previous spectrum may primarily occur...

1992

Clastic Tidalites„A Partial Retrospective View

George D. Klein

Special Publications of SEPM

... it is not ABSTRACT Research PHASE I Facies on tidalites sediments mapping of Holocene tidalites in discussed herein on intertidal sand bodies...

1998

Experimental Dissolution of Calcium, Magnesium, and Strontium from Recent Biogenic Carbonates: A Model of Diagenesis

Johannes H. Schroeder

Journal of Sedimentary Research (SEPM)

... positions, absorbed in lattice interstices, or as inclusions). This suggests the presence of more than one mineral phase in the skeletal material studied...

1969

The Use of Borehole Imaging Techniques in the Exploration for Stratigraphic Traps: An Example from the Middle Devonian Gilwood Channels in North-Central Alberta

Roger N. Dueck, Eric F.W. Paauwe

CSPG Bulletin

.... Marine Geology, v. 1, p. 240-258. Miall, A.D. 1974. Paleocurrent analysis of alluvial sediments: a discussion of directional variance and vector magnitude...

1994

The Use of Borehole Imaging Techniques in the Exploration for Stratigraphic Traps: an Example from the Middle Devonian Gilwood Channels in North-central Alberta

Roger N. Dueck, Eric F. W. Paauwe

CSPG Special Publications

... of alluvial sediments: a discussion of directional variance and vector magnitude. Journal of Sedimentary Petrology, v. 44, p. 1174–1185. Moody-Stuart, M...

1995

Field and Modelling Studies of Cambrian Carbonate Cycles, Virginia Appalachians: REPLY

J. F. Read, W. F. Koerschner III, D. A. Osleger, G. A. Bollinger, C. Coruh

Journal of Sedimentary Research (SEPM)

..., DAVISON, F.C., SIBOL, M.S., AND BIRCH, J.B., 1989, Magnitude recurrence relations for the southeastern United States and its subdivisions: Journal...

1991

Chalk From the Ekofisk Area, North Sea: Nannofossils + Micropores = Giant Fields

Charles T. Feazel, Helen E. Farrell

Special Publications of SEPM

... such sediments under normal sea-floor conditions until they are grain-supported leaves 45-50 percent porosity. Porosities approaching t h i s magnitude...

1988

Experimental Results and Potential for Hot Dry Rock Geothermal Resources

John C. Rowley, Grant Heiken, Hugh D. Murphy, Michio Kuriyagawa

Circum Pacific Council Publications

..., California. A l l the above research a n d development projects h a v e provided demonstrations of energy production from a spectrum of differ­ ent...

1982

Origin of Remanent Magnetization in Dolomite from the Monterey Formation

J. Scott Hornafius

Pacific Section SEPM

... Curves Thermal demagnetization experiments demonstrate that the blocking temperature spectrum of the magnetic mineral carrying both the primary...

1984

Analysis of Electromagnetic Depth Sounding Responses Over a Layered Earth: Investigating Oil & Gas Seeps in the Petroleum Provinces

Shastri L. Nimmagadda, Andrew Ochan

Petroleum Exploration Society of Australia (PESA)

... in which the observations are made and radiation and phase retardation are negligible, so to say, the effects of propagation are totally disregarded...

2016

Mapping Stratigraphic Traps with Electrical Transients

Jamil Azad

CSPG Bulletin

... in the subsurface and may provide a semiquantitative estimate of their magnitude. The method works irrespective of structure, making it ideally suited to deal...

1977

Biogeochemical Reactions in a Diffusion-limited Zone Around Wellbore Cement Relevant to Underground Hydrogen Storage

Christopher Rooney, Qingyun Li

Unconventional Resources Technology Conference (URTEC)

... at 2471 eV and 2482.5 eV where the S K-edge spectrum for sulfide and sulfate have their greatest intensity. Multi-energy maps of Fe on cement cross...

2023

Enhancing Lithology Classification through a Deep Learning Framework

P. Zhang, T. Gao, R. Li

Unconventional Resources Technology Conference (URTEC)

... aspect of the ML pipeline—from raw data acquisition to model optimization. The following sections outline each phase in detail. Data Collection...

2025

Petrographic Examination of Sedimentary Rocks in the Sem Using Backscattered Electron Detectors

Kenneth Pye, David H. Krinsley

Journal of Sedimentary Research (SEPM)

..., A reappraisal of the complete electron emission spectrum in scanning electron microscopy: Jour. Phys. D, v. 6, p. L105-LI07. ROBINSON, V. N. E., 1975...

1984

Influence of Organic Matter in Soils on Radar-Wave Reflection: Sedimentological Implications

Remke L. van Dam,, Elmer H. van den Berg, Sytze van Heteren, C. Kasse, Jeroen A.M. Kenter, Koos Groen

Journal of Sedimentary Research (SEPM)

... to the magnitude of change, is reflected. The reflection coefficient is given by RC = (Z2 - Z1)/(Z2 + Z1), where Z1 and Z2 are the dielectric impedances...

2002

Depositional Patterns in the Late Holocene Po Delta System

Annamaria Correggiari, Antonio Cattaneo, Fabio Trincardi

Special Publications of SEPM

...) Piacenza (936 m3 s-1), (4) Boretto (1150 m3 s-1), and (5) Pontelagoscuro (1470 m3 s-1). Arrow width indicates discharge magnitude. In brackets...

2005

CRITERIA FOR IDENTIFYING FOSSIL NUCLEAR REACTORS AND THEIR APPLICATION TO SASKATCHEWAN

K.E. Apt and E.A. Bryant

Saskatchewan Geological Society

... in the form of water and hydrated mineral species moderated the fission neutron spectrum, suggesting that as the "critical" uranium emplacement occurred...

1977

The Future of Fossil Fuels in Canada: Presented to the C.S.P.G. Wednesday, June 20, 1973 at the Al San Club

G. D. Grant

CSPG Bulletin

... that the major thrust of our energy brief concern itself with the location of and magnitude of these resources, and their availability to society...

1973

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