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The AAPG/Datapages Combined Publications Database

Showing 23,315 Results. Searched 195,354 documents.

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Understanding the Uncertainty of Gas Saturation Estimates: An Example from a Single Subbituminous Coal Seam

Tennille Mares, Tim Moore, Catherine Moore

Petroleum Exploration Society of Australia (PESA)

... and a standard deviation of 0.40 m3/t. The methane adsorption isotherm curves (Figure 1) clearly show the variability in maximum holding capacity for the Jasper...

2012

Reproducibility and Significance of Measurements of Sedimentary Size Distributions

John J. W. Rogers

Journal of Sedimentary Research (SEPM)

... somewhat larger percentage deviations than do those of mean and standard deviation. The reproducibility of the various parameters is satisfactory...

1965

A Sample Splitter for Moist, Saturated, or Suspended Sediment: NOTES

Dean A. Mcmanus, Larry G. Hanson, James V. Baker

Journal of Sedimentary Research (SEPM)

... the splits. Comparison of the median particle size among the splits reveals little variation, and, although the mean, standard deviation and skewness show more...

1966

Trace and Minor Elements in Evaporites

Walter E. Dean

Special Publications of SEPM

... = 80) Standard Deviation B. Castile (Permian) Mean (N = 510) Standard Deviation F. Zechstein (Permian) G. Yates(Permian) H. Windsor (Triassic...

1987

Abstract: Constraints on the Geochemical Provenance of Refined Copper and Brass Artifacts from Nova Scotia, Canada: Insights into the Metallurgical and Trace Element Systematics of European Contact-Era Trade Alloys Brought to Atlantic Canada

Paige Fleet, Glen Hodge, Jacob Hanley, Katie Cottreau-Robins, Brandon Boucher, Chris Mcfarlane, Graham Layne, Bruce Stewart, Mike Sanders

Atlantic Geology

... of the same object. Standard deviation values for each average were used to identify significant outliers outside the range of 2 sigma values, which were...

2015

Dune Cross-bedding on Mustang Island, Texas: GEOLOGICAL NOTES

Earle F. McBride , Miles O. Hayes

AAPG Bulletin

...------------ Cross-beds of eolian, marine, and fluvial origin may differ sufficiently in shape, dip angle, standard deviation of dip azimuths...

1962

X-Ray Imaging for Compaction Band Characterisation in Porous Sandstones; #41662 (2015)

E.M. Charalampidou, S. Stanchits, S. Hall, G. Viggiani, H. Lewis, G. Couples

Search and Discovery.com

... the experiments, defining the changes caused by deformation. The standard deviation of the grey-scale values in Vosges is smaller than that in Bentheim (undeformed...

2015

EXTENDED ABSTRACT: Raman Spectroscopy of Reflectance Suppression in Artificial Source Rock

Margaret Sanders, Aaron Jubb, Paul Hackley, Ken Peters, Andrew Pomerantz

The Society for Organic Petrology (TSOP)

..., APM100 = only Green River shale. All samples were pyrolyzed at 330 °C for 72 hours. Reflectance error bars represent one standard deviation. RBS error...

2021

Power-Law Distribution of Fracture Attributes: Integrated Approach to Fractured Basement Reservoir of Garba Formation, South Sumatra Basin

Rizky Dwi Renaldy, Ektorik Dimas, Anggun Apriliani, Santa Marchilya Tarigan

Indonesian Petroleum Association

...-stages of tectonic activities occured during the basement configuration. The standard deviation of apertures is 3.45 mm with range between 0.1 to 30 mm...

2018

Surface Prediction using Rejection Sampling to Handle Non-linear Constraints

Petter Abrahamsen, Pål Dahle, Vera Louise Hauge, Ariel Almendral-Vazquez, Maria Vigsnes

CSPG Bulletin

...ed realizations will be an approximation for the prediction, and the pointwise standard deviation of the simulated realizations will be an approximati...

2015

Comparison of Satellite Altimetric Gravity and Ship-Borne Gravity„Offshore Western Australia

Asbjorn Norlund Christensen, Ole B. Andersen

Petroleum Exploration Society of Australia (PESA)

... the Geoscience Australia marine gravity database. The standard deviation of the difference between the ship-borne gravity data and the satellite...

2016

In-Situ Analysis of Traces, Minor and Major Elements in Rocks and Soils with a Portable XRF Spectrometer; #41836 (2016)

Anthony Thomas, Joachim Heckel, Dirk Wissmann

Search and Discovery.com

... using the same calibration. A pure quartz sample was measured 10 times to determine the lower limits of detection, LOD. The absolute standard deviation...

2016

Estimation of Channel Sinuosity from Paleocurrent Data: A Method Using Fractal Geometry: DISCUSSION

J.P. Le Roux

Journal of Sedimentary Research (SEPM)

..., J.P., 1994, The angular deviation of paleocurrent directions as applied to the calculation of channel sinuosities: Journal of Sedimentary Research, v...

2001

ABSTRACT: Bireflectance of Vitrinite in Arkoma Basin Dispersed Organics: Insights for Understanding Reflectance Populations in High Thermal Maturity Regions

David W. Houseknecht, David Bensley, Lori A. Hathon, Paul H. Kastens

The Society for Organic Petrology (TSOP)

..., linear relationship exists between mean random vitrinite reflectance and standard deviation of vitrinite reflectance. This relationship is manifested...

1991

A Suggested Standard Procedure for the Construction of Unimodal Current Rose-Diagrams: RESEARCH METHOD PAPER

Christian Andreassen

Journal of Sedimentary Research (SEPM)

...: London, Allen and Unwin, 169 p. KRAUSE, G. F., AND GEIJER, T. A. M., 1987, An improved method for calculating the standard deviation and variance...

1990

Orthoconic Nautiloids as Indicators of Shoreline Surface Currents: NOTES

R. A. Reyment

Journal of Sedimentary Research (SEPM)

... was determined by the following analog of the standard deviation, the mean angular deviation s = 2(1 - r) (3) where r is defined in (2...

1968

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