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The AAPG/Datapages Combined Publications Database

Showing 1,682 Results. Searched 200,619 documents.

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Calcite and Aragonite Precipitation Under Controlled Instantaneous Supersaturation: Elucidating the Role of CaCO3 Saturation State and Mg/Ca Ratio on Calcium Carbonate Polymorphism

Vionette De Choudens-Sanchez, Luis A. Gonzalez

Journal of Sedimentary Research (SEPM)

... of Regression Equations.—Regression equations were calculated using least-squares regressions, and χ2 goodness of-fit-testing indicate that all...

2009

STRATIGRAPHIC AND STRUCTURAL RELATIONSHIPS OF THE EASTERN TALLADEGASLATE BELT OF ALABAMA

James F. Tull

Alabama Geological Society

.... 1-65. Wright, T.L, an Doherty, P.C., 1970 A linear programming and least squares computer method for solving petroWright, T.L, anddDoherty, P.C., 1970...

1979

Domba Conglomerate, Devonian, Norway: Process and Lateral Variability in a Mass Flow-Dominated, Lacustrine Fan-Delta

W. Nemec, R. J. Steel, S. J. Poreebski, Å. Spinnangr

CSPG Special Publications

... = number of data). The thick oblique line with corresponding equation is a least-squares regression line fitted to the data (r = linear correlation...

1984

Lithology and reservoir properties of the Delaware Mountain Group of the Delaware Basin and implications for saltwater disposal and induced seismicity

Katie Smye, D. Amy Banerji, Ray Eastwood, Guin McDaid, Peter Hennings

Journal of Sedimentary Research (SEPM)

... by interpolating between well data points using a least-squares method. While differentiating reservoir sandstones and mapping their distribution...

2021

Sedimentology and Depositional Environments of the Emery Sandstone Member of the Mancos Shale, Emery and Sevier Counties, Utah

J. Paul Matheny, M. Dane Picard

Rocky Mountain Association of Geologists

.... mean grain size. Grain size limits and sorting values are shown. Line A (y = .15x-.175, correlation coefficient = 33) is a least squares fit. Line 6 (y...

1985

Rain-Lahar Generation and Sediment Delivery Systems at Mayon Volcano, Philippines

Kelvin S. Rodolfo, A. Tevfik Arguden

Special Publications of SEPM

... is presumed to have been equal at both sites Upper right panel Triggering rainfall versus duration The line is a least squares fit r 0 68 for the 16...

1991

Chapter 7: Curie Point Depths in Northwestern South America and the Southwestern Caribbean Sea

Carlos A. Vargas, Javier Idarraga-Garcia, Juan M. Salazar

AAPG Special Volumes

... of the power spectrum density and linearization by the least squares method, and 1w1 and 1w2 represent the boundary values of the wavelengths that allow...

2015

Trishear: A Review of Kinematics, Mechanics, and Applications

Stuart Hardy, Richard W. Allmendinger

AAPG Special Volumes

... the identification of best-fit criteria; Allmendinger chose a least-squares linear regression to identify the point at which an unfolding keybed most...

2011

Petrologic and Experimental Evidence for the Etching of Garnets by Organic Acids in the Upper Jurassic Morrison Formation, Northwestern New Mexico

Paula L. Hansley

Journal of Sedimentary Research (SEPM)

... Energy Agency, p. 219-253. APPLEMAN, D. E., and EVANS, H. T., JR., 1973, Job 9214--Indexing and least-squares refinement of powder diffraction data: U.S....

1987

Pleistocene Shallowing-Upward Sequences in New Providence, Bahamas: Signature of High-Frequency Sea-Level Fluctuations in Shallow Carbonate Platforms

Marc Aurell , Donald F. McNeill , Thierry Guyomard , Pascal Kindler

Journal of Sedimentary Research (SEPM)

...-level rise: Sedimentary Geology, v. 80, p. 319-329. KIRSCHVINK, J.L., 1982, The least-squares line and plane and the analysis of paleomagnetic data...

1995

Correlation of Terrestrial Climatic Fluctuations with Global Signals During the Upper Cretaceous–Danian in a Compressive Setting (Provence, France)

Isabelle Cojan, Marie-Gabrielle Moreau

Journal of Sedimentary Research (SEPM)

... specimens, most of which come from the Vitrolles section, no direction could be calculated by means of least-squares regression because demagnetization...

2006

Calculation of Ages of Hydrocarbons in Oils--Physical Chemistry Applied to Petroleum Geochemistry I

Allen Young , Patrick H. Monaghan , R. T. Schweisberger

AAPG Bulletin

.... The ages of single samples commonly can be determined with some confidence because the least-squares correlations are based on groups of 29 and 56...

1977

Interpreting Sedimentary Growth Structures from Well Log and Seismic Data (With Examples)

Richard E. Bischke

AAPG Bulletin

... Pliocene-Pleistocene section, with correlation 27 erratically departing from least squares fit line, indicating a data miscorrelation. Thus, the method can...

1994

Quantification of Tertiary Exhumation in the United Kingdom Southern North Sea Using Sonic Velocity Data

Richard R. Hillis

AAPG Bulletin

... Sandstone, and the Bunter Shale were plotted against each other to check their consistency (Figure 6). Regression analysis was used to determine least-squares...

1995

Forecasting the Domestic Utilization of Natural Gas in Nigeria (2015…2020)

J. J. Adaji, R. U. Onolemhemhen, S. O. Isehunwa, A. Adenikinju

Africa Energy and Technology Conference, 2016

... likely growth rate for a short-term period, using an econometric methodology of ordinary least squares and an ARIMA model, it estimates...

2016

Fracture-enhanced Porosity and Permeability Trends in the Bakken Formation, Williston Basin, Western North Dakota

Wayne B. Freisatz

Williston Basin Symposium

... member). The three informal members of the Bakken Formation show an apparent onlapping relation, with the lower shale the least extensive...

1995

Anomalous Tectonic Subsidence of the Southern Australian Passive Margin: Response to Cretaceous Dynamic Topography or Differential Lithospheric Stretching?

B. J. Brown, R. D. Müller, H. I. M. Struckmeyer

Petroleum Exploration Society of Australia (PESA)

... (~ factor). The misfit between the model (modelled subsidence and strain rate curve) and backstripped tectonic subsidence is minimised in a least-squares...

2001

Chapter 4: Synthetic Seismograms and Their Uses

Tom Wittick

North Texas Geological Society

... resistivity to sonic values. The Pseudosyn process uses a least squares minimum error technique to fit the data to an equation of the same form...

1992

A Review of Permian and Triassic Paleomagnetic Data With Respect to Paleogeographic Conditions at, and the Location of, the Permian-Triassic Boundary

A. E. M. Nairn, D. N. Peterson

CSPG Special Publications

... that the magnetic field be dipolar (Runcorn, 1959), an assumption which can be reasonably demonstrated (e.g. Helsley and Steiner, 1969). If the least squares...

1973

Evaluating Reservoir Compartmentalization by Correlating Laboratory and Field Data

Michael J. Heymans

Rocky Mountain Association of Geologists

... permeabilities should be as close as possible to a least squares fit curve for the porosity-permeability relationship. Permeability estimates from...

1998

The Relationship of Lithology and Tectonics to Fracturing in the Monterey Formation, Point Arguello Field, Offshore California

By R. K. Sadler

Special Publications of SEPM

... a non-negative least squares procedure. Detritus is considered to be the sum of feldspars, clay minerals, kerogen, pyrite, and detrital quartz...

1990

Preliminary Report on Curved Fractures Near Faults as Related to Fluid Extraction

Richard J. Erdlac, Jr., Richard J. Erdlac

West Texas Geological Society

..., R.H., Jr., 1974, Experimental test of least squares strain gage calculation using twinned calcite: Geological Society of America Bulletin, vol. 85, p...

2000

Phytostabilization of a landfill containing coal combustion waste

Christopher Barton, Donald Marx, Domy Adriano, Bon Jun Koo, Lee Newman, Stephen Czapka, John Blake, Donald Marx, Domy Adriano, Bon Jun Koo, Lee Newman, Stephen Czapka, John Blake, Domy Adriano, Bon Jun Koo, Lee Newman, Stephen Czapka, John Blake, Bon Jun Koo, Lee Newman, Stephen Czapka, John Blake, Lee Newman, Stephen Czapka, John Blake, Stephen Czapka, John Blake, John Blake

Environmental Geosciences (DEG)

... by backtransformation of the least-squares mean (LSM) from the logistic models (eLSM)/(1 + eLSM). Seedling growth was estimated by subtracting the initial height (April...

2005

The Influence of Pore Structure in Rocks on the Entrapment of Oil

N. C. Wardlaw

CSPG Special Publications

.... Rocks chosen at random to represent a wide range of porosities. Line is from a least squares linear regression. One can transform Snwr, which has been...

1980

Synthetic Seismograms and Their Uses

Abilene Geological Society

... that transforms resistivity to sonic values. The Pseudosyn process uses a least squares minimum error technique to fit the data to an equation...

1993

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