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The AAPG/Datapages Combined Publications Database
Showing 1,682 Results. Searched 200,630 documents.
A Late Neoproterozoic age for the Caledonia Mountain Pluton, a high Ti-V layered gabbro in the Caledonia (Avalon) terrane, southern New Brunswick
Sandra M. Barr, Michael A. Hamilton, Chris E. White, Scott D. Samson
Atlantic Geology
.... New Brunswick Department of Natural Resources and Energy Assessment Report 474544. YORK, D. 1969. Least squares fitting of a straight line...
2000
Facies and Lithological Controls on Paleomagnetism: An Example From the Rainbow South Field, Alberta, Canada
M.T. Cioppa, J.S. Lonnee, D.T.A. Symons, I.S. Al-Aasm, K.P. Gillen
CSPG Bulletin
.... Tectonophysics, v. 149, p. 245-264. Kirschvink, J.L. 1980. The least-squares line and plane and the analysis of paleomagnetic data. Geophysical Journal...
2001
Geodetic Baselines Across the Gulf of California Using the Global Positioning System: Chapter 24: Part IV. Satellite Geodesy
T. H. Dixon, D. M. Tralli, G. Blewitt, J. P. Dauphin
AAPG Special Volumes
...), which essentially performs multiparameter weighted least-squares estimation. This filter allows simultaneous estimation of station locations...
1991
Reconstruction of a 20th Century Varve Chronology from the Central Gulf of California: Chapter 29: Part V. Physical Oceanography, Primary Productivity, Sedimentology
Tim R. Baumgartner, Vicente Ferreira-Bartrina, James Cowen, Andy Soutar
AAPG Special Volumes
..., The determination of low levels of polonium-210 in environmental materials: Analytica Chimica Acta, v. 43, p. 221-227. Gentleman, W. M., 1973, Least...
1991
Core Magnetostratigraphy: Chron 33r in the Southern Alberta Plains
Taslima Anwar, Andrew J. Mumpy, Dunia Blanco, Vadim A. Kravchinsky, Octavian Catuneanu
CSPG Bulletin
... Kauffman (eds.). Geological Association of Canada, no. 39, p. 397–434. Kirschvink, J.L. 1980. The least-squares line and plane and the analysis...
2017
Structure of the Outer Convergent Margin Off Kodiak Island, Alaska, from Multichannel Seismic Records: Convergent Margins
Roland Von Huene
AAPG Special Volumes
... slope and mid-slope terrace areas are summarized by a least-squares curve (Fig. 4, dashed line), shown with a similar curve based upon more data...
1979
From Reservoir Characterization to Reservoir Monitoring: An Integrated Workflow to Optimize Field Development Using Geochemical Fingerprinting Technology
Faye Liu, Jiang Wu, Muqing Jin, Douglas L. Hardman, Dave Cannon
Unconventional Resources Technology Conference (URTEC)
... extracted from the rock samples as end members and the produced oil samples as the target. Such a calculation is performed using linear least-squares...
2020
A Comparative Study of Monotonic and Cyclic Injection Hydraulic Fracturing in Saturated Tight Rocks Under Triaxial Stress
Saurabh Goyal, Mark E. Curtis, Carl H. Sondergeld, Chandra S. Rai
Unconventional Resources Technology Conference (URTEC)
... the arrival times at the sensors (adjusted for the sensor delays) and a weighted least squares inversion method. Only those events which have clear...
2020
The Connected Pore Space Paradigm: An Evaluation of the Effect of Crushing on Pore Volume and Structure
James Greene, Jorge Viamontes, Britt Hill
Unconventional Resources Technology Conference (URTEC)
... to the experimental data between closure and intrusion pressures using least-squares relative error regression (Figure 3). Between these pressures, confining pressure...
2020
Heavy Mineral Correlations and Provenances
Louis I. Briggs
Journal of Sedimentary Research (SEPM)
... in Huerfano Park, the left-hand part of the function = 2.12-0.54 Md was determined by least squares regression on 99 samples whose median diameter was less...
1965
The Marine Dolomitization of the Mifflin Member Platteville Limestone in Southwest Wisconsin
George Benjamin Asquith
Journal of Sedimentary Research (SEPM)
... fossils. Note the higher percent of broken fossils in the sparite facies. The line is a linear least squares fit to the data. All samples with poorly...
1967
Sediments of Charlotte Harbor, Southwestern Florida
Ter-Chien Huang, H. G. Goodell
Journal of Sedimentary Research (SEPM)
... the linear to quintic equations were computed using least squares. These polynomials represent surfaces of best fit. Standard regression techniques...
1967
Clay Fabric and its Relation to Structural Properties in Mid-Continent Pennsylvanian Sediments
I. Edgar Odom
Journal of Sedimentary Research (SEPM)
... with Pennsylvanian coals in Illinois, Regression line computed by least squares (r=correlation coefficient) assuming semilogarithmic correlation...
1967
Integration of Production Communication and Hydraulic Fracture Connection in Unconventional Reservoirs
Yanrui Ning, Ge Jin, Xiaoyu Zhu, Ali Tura
Unconventional Resources Technology Conference (URTEC)
... (unit: days-1), 𝑡 is time in days. Least-squares minimization is used to estimate the optimal parameters in Eq. (1) to match the real production data...
2022
Tyee Formation: A Study of Proximality in Turbidites
J. P. B. Lovell
Journal of Sedimentary Research (SEPM)
... are all on the same horizontal scale (see fig. 4); the numbers refer to the squares of the grid shown on figure 2. The least squares lines were...
1969
Dynamic Stress Effects on Production Decline in Haynesville Shale Gas Wells
Ehab Rabah, I. Yucel Akkutlu
Unconventional Resources Technology Conference (URTEC)
..., in graphical form. The decline of the well was analyzed using the least squares regression. This gives the best matched values for qi, Di, b, and c...
2025
Strontium Isotope Compositions of Non-marine Carbonate Rocks from the Beacon Supergroup of the Transantarctic Mountains
Gunter Faure, Peter J. Barrett
Journal of Sedimentary Research (SEPM)
... rocks: A summary--2: New Zealand Jour. Geology and Geophysics, v. 8, No. 2, p. 221-230. YORK, D., 1966, Least squares fitting of a straight line. Canadian...
1973
Boron in Illite as an Indicator of Paleosalinity of Illinois Coals
B. F. Bohor, H. J. Gluskoter
Journal of Sedimentary Research (SEPM)
... is performed by the colorimetric method. FIG. 4. Boron in illite versus illite percentage of clay mineral fraction. (Least squares regression on data...
1973
Ooids from Great Salt Lake, Utah, as an Analogue for the Genesis and Diagenesis of Ooids in Marine Limestones
Charles F. Kahle
Journal of Sedimentary Research (SEPM)
.... S. HANWERKER, 1963, The least-squares refinement of crystal unit cells with powder diffraction data by an automatic computer indexing method (abs.): Pros. Ann...
1974
Identifying Salt Suture Zones and Lithological Changes of the Louann Salt in the Gulf of Mexico Basin, Louisiana
Jamie Singer, Julie Bloxson, and William A. Heins
GCAGS Transactions
... calibration for bulk elements. XRF and ICP–MS results were compared using least squares regression, generating correction equations for raw XRF data...
2025
Modern Cool-Water Beach Sands of Southwest England
John R. Merefield
Journal of Sedimentary Research (SEPM)
.... The regression line is a least-squares fit. TABLE 1. Carbonate mineralogy of modern beach sands of southwest England End_Page 417...
1984
Recognition and Significance of Inherited Quartz Overgrowths in Quartz Arenites
Ivan D. Sanderson
Journal of Sedimentary Research (SEPM)
... with visible signs of truncation, were calculated. Results of the experiment are shown in Figure 8, a least-squares regression in which s/p values are plotted...
1984
Morphology and Origin of an Erosion Surface Cut into the Bad Heart Formation During Major Sea-Level Change, Santonian of West-Central Alberta, Canada
A. Guy Plint, Roger G. Walker
Journal of Sedimentary Research (SEPM)
... the isopach data. A regular grid of data points was first set up by a weighted, moving least-squares analysis of the real data points in Figure 4. The grid...
1987
Storm-dominated Sedimentation on the Inner Shelf of the Canadian Beaufort Sea
Philip R. Hill , Odette C. Nadeau
Journal of Sedimentary Research (SEPM)
... of the transmissometer was obtained, despite the wide range of concentrations. Least squares regression analysis shows a linear relationship (Fig. 2...
1989
Bed Configurations in Steady Unidirectional Water Flows. Part 1. Scale Model Study Using Fine Sands
Lawrence A. Boguchwal , John B. Southard
Journal of Sedimentary Research (SEPM)
... by fitting least-squares straight lines through full centerline profiles--a method that itself introduced an error of a few percent in depth measurement...
1990