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The AAPG/Datapages Combined Publications Database
Showing 1,683 Results. Searched 200,642 documents.
Graphic Correlation of Plio-Pleistocene Sequence Boundaries, Gulf of Mexico: Oxygen Isotopes, Ice Volume, and Sea Level
Ronald E. Martin, Ruth R. Fletcher
Special Publications of SEPM
... the composite based on ODP Core 625B Fig 12 proves instructive Martin and others l990a originally fitted the LOC for Core E67 135 using a Least Squares...
1995
Zeolite minerals from the North Shore of the Minas Basin, Nova Scotia
Georgia Pe-Piper, Lisa Miller
Atlantic Geology
... 1973. Job 9214: indexing and least squares refinement of powder diffraction data. U.S. Dept. of Commerce, NTIS Document, PB-21188. Aumento, F. 1966...
2002
Statistical Time-Series Analysis and Sedimentological Tuning of Bedding Rhythms in a Triassic Basinal Succession (Southern Alps, Italy)
Florian Maurer, Linda Hinnov, Wolfgang Schlager
Special Publications of SEPM
.... 522-533. LOMB, N.R., 1976, Least squares frequency analysis of unequally spaced data: Astrophysics and Space Science, v. 39, p. 447-462. MAURER, F...
2004
Integrated Study of Ancient Delta-Front Deposits, Using Outcrop, Ground-Penetrating Radar, and Three-Dimensional Photorealistic Data: Cretaceous Panther Tongue Sandstone, Utah, U.S.A.
Cornel Olariu, Janok P. Bhattacharya, Xueming Xu, Carlos L.V. Aiken, Xiaoxian Zeng, George A. Mcmechan
Special Publications of SEPM
... model is a simplified model which does not include radial and tangential distortions made by camera lenses. Therefore, a least-squares method is used...
2005
Constraints on the nature and thickness of sedimentary fill and underlying basement rocks in Bowser and Sustut basins, north-central British Columbia from analysis of potential field data
Carmel Lowe, Judith Baker, Carol Evenchick
CSPG Bulletin
... are used to solve Euler's equation by a least squares inversion. The data window is then moved a specified number of elements in the x or y grid...
2006
Varve Formation in the Central Gulf of California: A Reconsideration of the Origin of the Dark Laminae from the 20th Century Varve Record: Chapter 30: Part V. Physical Oceanography, Primary Productivity, Sedimentology
Tim R. Baumgartner, Vicente Ferreira-Bartrina, Pedro Moreno-Hentz
AAPG Special Volumes
... different stations were standardized independently. Table 3 summarizes the statistics of the least squares fits obtained by linear regression of the total...
1991
Origin and Source-Rock Potential of the Sharon Springs Member of the Pierre Shale, Colorado and Kansas
Donald L. Gautier, Jerry L. Clayton, Joel S. Leventhal, Nancy J. Reddin
Rocky Mountain Association of Geologists
... of the linear least-squares line shown in Figure 4. According to this plot, the Sharon Springs samples contain predominantly Type II organic matter...
1984
Revised stratigraphy, regional correlations and new bentonite radiometric ages for the Albian Loon River Formation, Fort St. John Group, northwestern Alberta
B. Hathway, G. Dolby, D. H. McNeil, S. L. Kamo, M. T. Heizler, N. Joyce
CSPG Bulletin
... in Petra® using the ‘highly connected features (least squares)’ option. Figure 4. Structure contour maps for (A) TS1. Solid blue line marks the zero...
2013
Fast Probabilistic Forecasting of Oil Production using Monte Carlo Simulations on Data Driven Acquisition of Decline-Curve Parameter Distributions
V.B.K. Chavali, W. J. Lee
Unconventional Resources Technology Conference (URTEC)
... that rely on clean data as well a simple least squares method to fit a linear model through as much of the data as possible resulting in a bad fit and hence...
2021
Exploitation of Multizones by Water Flooding in the Daqing Oil Field: Chapter 6
Jin Yusun, Yang Wanli, Wang Zhiwu
AAPG Special Volumes
... displacement efficiency (ultimate and without water cut) obtained in laboratory simulation of natural cores and artificial cores by the least-squares method...
1989
Pore Networks in Holocene Carbonate Sediments
Paul Enos, L. H. Sawatsky
Journal of Sedimentary Research (SEPM)
... time are presented in Figure A-1. A simple computer program was written to obtain logarithms, plot the values, calculate the least squares fit...
1981
Chemical and Sr-Isotopic Variations During Diagenesis of Miocene Siliceous Sediments of the Monterey Formation, California
Hannes K. Brueckner, Walter S. Snyder
Journal of Sedimentary Research (SEPM)
... of 0.707945. The decay constant used for Rb87 is 1.42 x 10-11/yr. Simple least-squares lines were fitted to the linear arrays on Rb-Sr isochron...
1985
Pervasive Subsurface Dolomitization of the Nisku Formation in Central Alberta
Hans G. Machel, James H. Anderson
Journal of Sedimentary Research (SEPM)
... per sample, excluding the primary peak, were used. Calculations were performed using a FORTRAN, weight-average, least-squares regression program...
1989
Characteristics, Distribution and Origin of Porosity in Shelf Dolostones: Burlington-Keokuk Formation (Mississippian), U.S. Mid-Continent
Philip W. Choquette, Ann Cox, William J. Meyers
Journal of Sedimentary Research (SEPM)
...-count analysis. A) Percent total porosity versus molds and rugs percent of total porosity, with least-squares lines and 1 SD bands for the two populations...
1992
Illite/Smectite Formation and Potassium Mass Transfer During Burial Diagenesis of Mudrocks: A Study from the Texas Gulf Coast Paleocene-Eocene
D. N. Awwiller
Journal of Sedimentary Research (SEPM)
... depth (Fig. 4). Percent illite in I/S varies from 25-30% in the least illitic samples to 85-90% in the most illitic samples (Fig. 5), and I...
1993
Simulating the Three-Dimensional Distribution of Sediment Units in Braided-Stream Deposits: SPECIAL SECTION: AQUIFER STRATIGRAPHY
Erik K. Webb
Journal of Sedimentary Research (SEPM)
... relationships there is variability about the fitted least-squares regression line. BCS-3D allows the user to define the standard deviation of error...
1994
Establishing a Regional Geologic Framework for Carbon Dioxide Sequestration Planning: A Case Study
Erik R. Venteris, Ronald R. Riley, James McDonald, Lawrence H. Wickstrom, James A. Drahovzal, John A. Harper
AAPG Special Volumes
... calculation, a variety of sources were used to obtain a solution for equation 2. Salinity was modeled using a least-squares relationship between measured...
2009
Elemental and Oxygen Isotope Composition of Early Jurassic Belemnites: Salinity vs. Temperature Signals
Idoia Rosales, Sergio Robles, Santiago Quesada
Journal of Sedimentary Research (SEPM)
...) represented in Figure 6. The total number of observations is n = 67. The lines represent linear least-squares fit regressions. In left side...
2004
Exploration for Oil Accumulations in Entrada Sandstone, San Juan Basin, New Mexico
Richard R. Vincelette , William E. Chittum
AAPG Bulletin
... to determine the base o the sand. The base was then smoothed, using a least-squares fit, and the top of the Entrada adjusted accordingly...
1981
Thermal Maturation by Vitrinite Reflectance of Woodford Shale, Anadarko Basin, Oklahoma
Brian J. Cardott , Michael W. Lambert
AAPG Bulletin
... is a logarithmic function with depth (Dow, 1977; Dow and O'Connor, 1982). The least-squares regression plotted in Figure 5B is used to predict...
1985
Interpretation of Crustal Structure from Regional Gravity Anomalies, Ouachita Mountains Area and Adjacent Gulf Coastal Plain
J. M. Kruger , G. R. Keller
AAPG Bulletin
... analysis of least squares polynomial surfaces with application to gravity data in the Pedregosa basin area: PhD dissertation, University of Texas...
1986
Analysis of Fluid and Heat Regimes in Sedimentary Basins: Techniques for Use with Large Data Bases
S. Bachu, C. M. Sauveplane, A. T. Lytviak, Brian Hitchon
AAPG Bulletin
... (k) from drill-stem tests or core and the porosity (n) obtained from interpretation of geophysical logs. The constants (C, a) are found by the least...
1987
Balanced Section in Thrust Belts Part 1: Construction
Declan G. De Paor
AAPG Bulletin
.... For example, straight contacts may be interpolated between data points by least-squares Fig. 13. (a) Illustration of correspondence between strike...
1988
Marine Geology of Sohm Basin, Canadian Atlantic Margin
Cynthia J. Ebinger , Brian E. Tucholke
AAPG Bulletin
..., 1982). Prior to transformation to the spectral domain, we used a least-squares linear regression to remove long-wavelength trends, interpolated data...
1988
Thermal Histories and Hydrocarbon Generation: Example from Utah-Wyoming Thrust Belt
Dave Deming , David S. Chapman
AAPG Bulletin
..., in press). Corrected BHTs are shown as a function of depth in Figure 4. Average geothermal gradients, derived from least-squares fits to the corrected BHT...
1989