A mechanical basis of fault-bend folding

N. P. Benesh, and J. H. Shaw

AAPG Bulletin

... modified after Suppe (1983). We calculate S using a least-squares criterion and find that the trends in Γ for each ϕ value share very similar slope values...

Forecast of economic gas production in the Marcellus Shale

Wardana Saputra, Wissem Kirati, David Hughes, and Tadeusz W. Patzek

AAPG Bulletin

... the best—in the least squares sense—predictions of possible futures, are free from bias, and avert significant over- or underpredictions of reserves...

Guizhou modern karsts as analogues for paleokarst reservoirs in the Shunbei oil field, Tarim Basin, China

Jingbin Wang, Dongya Zhu, Zhiliang He, Haiming Song, Quanyou Liu, Cheng Zeng, Tianbo Yang, and Qian Ding

AAPG Bulletin

... a least-squares inversion by RES2DINV. These inversion data were further introduced into Surfer software to restrain potential abnormal occurrences...

GEO 2008 - Middle East Conference and Exhibition, March 2-5, 2008, Manama, Bahrain - Abstracts, #90077 (2008)

Search and Discovery.com

AAPG 2016 International Conference and Exhibition

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Abstract: Optimization of SAGD Process Accounting for Geological Uncertainties Using proxy Models; #90187(2014)

Eugene Fedutenko, Chaodong Yang, Colin Card, and Long Nghiem

Search and Discovery.com

... terms; and aij are the coefficients of cross (interaction) terms. The coefficients are typically estimated by the least squares fitting of the model...

CSPG/CSEG/CWLS GeoConvention 2011; - Abstracts, #90173 (2015).

Search and Discovery.com

Application of Vitrinite Reflectivity to Paleogeothermometry Studies: Some Examples from Papua New Guinea Basins

N. J. Russell

Papua New Guinea (PNG) Petroleum Convention Proceedings

... is similar to the value of 5°C used by Exon and Marlow (1988) for calculating sub­ surface tem peratures in the New Ireland Basin. Least squares...

Geochemistry of North Central North Fiji Basin Sediments

Gary M. McMurtry, Eric H. DeCarlo, Kee Hyun Kim

Circum Pacific Council Publications

... calculated by a least-squares fit of the logarithm of the excess T h activity (expressed as the alpha track production density in tracks/cm day) versus...

Bass Basin Geology and Petroleum Exploration

G. C. Smith

Petroleum Exploration Society of Australia (PESA)

... and the least-squares fitting technique of partial trend-surfaces . Geothermal gradients were calculated for all wells drilled up to 1980 using dT/dX...

A Conodont- and Graptolite-Based Silurian Chronostratigraphy

Mark A. Kleffner

Special Publications of SEPM

... of most or all of those best controlled points were subsequently used to calculate an equation for the LOC by the method of least squares...

Secular Variations in the Phanerozoic Reef Ecosystem

Wolfgang Kiessling

Special Publications of SEPM

... on a least-squares of carbonate survival rates Mackenzie than older ones The reconstruction of ancient sediment masses fit The than older ones...

Fault/Fracture Controlled Hydrothermal Dolomitization and Associated Diagenesis of the Upper Devonian Jean Marie Member (Redknife Formation) in the July Lake Area of Northeastern British Columbia

Jack Wendte, Ihsan Al-Aasm, Guoxiang Chi, David Sargent

CSPG Bulletin

... for calcite components. The least squares regression line and the corresponding correlation coefficient for all equant calcite cement components...

Earthquake-Induced Landslides and Their Effects on Alluvial Fans

David K. Keefer

Journal of Sedimentary Research (SEPM)

... with equation is log-linear least-squares regression mean from Keefer and Wilson (1989). End_Page 85------------------------- debris flows. A smaller number...

Petrologic evolution of the San Juan volcanic field, southwestern Colorado: Pb and Sr isotope evidence

Peter W. Lipman, Bruce R. Doe, Carl E. Hedge, Thomas A. Steven

Grand Junction Geological Society

.... America Bull., v. 55, p. 1047–1079. York, Derek, 1969, Least squares fitting of a straight line with correlated errors: Earth and Planetary Sci...

Compensational Stacking of Channelized Sedimentary Deposits

Kyle M. Straub, Chris Paola, David Mohrig, Matthew A. Wolinsky, Terra George

Journal of Sedimentary Research (SEPM)

..., in both studies, reported values of σss at small measurement time windows were underestimated by exponential least-squares fits. Lyons (2004) assumed...

Orbital Climate Forcing in Mudflat to Marginal Lacustrine Deposits in the Miocene Teruel Basin (Northeast Spain)

Hemmo A. Abels, Hayfaa Abdul Aziz, Dario Ventra, Frederik J. Hilgen

Journal of Sedimentary Research (SEPM)

... Spain): Neues Jahrbuch fur Geologie und Palaontologie Monatshefte, v. 6, p. 327–360. Kirschvink, J.L., 1980, The least-squares line and plane...

New U-Pb Zircon and 40AR/39AR Age Constraints on the Late Mesozoic to Cenozoic Plutonic Record in the Western San Juan Mountains

David A. Gonzales

Rocky Mountain Association of Geologists

... Society of America Bulletin, v. 108, no. 7, p. 757–767. York, D., 1969, Least squares fitting of a straight line with correlated errors: Earth...

Deep-Water Channel Run-Out Length: Insights from Seafloor Geomorphology

Jacob A. Covault, Eitan Shelef, Miles Traer, Stephen M. Hubbard, Brian W. Romans, Andrea Fildani

Journal of Sedimentary Research (SEPM)

... systems (Fig. 4A). When these three systems are removed, the coefficient of determination (r2 value) from least-squares regression of the relief...

An Integrated Approach to Determining 4D Stress Development at Castle Cove

Hugo B. Burgin, Khalid Amrouch, Philippe Robion, David Kulikowski

Australian Petroleum Production & Exploration Association (APPEA) Journal

... test of least-squares strain gage calculation using twinned calcite. Geological Society of America Bulletin 85(12), 1855–1864. doi:10.1130/0016-7606...

Magnetic-Fabric Analysis As A Tool To Constrain Mechanisms of Deep-Water Mudstone Deposition In the Marnoso Arenacea Formation (Miocene, Italy)

Eleonora Dall'olio, Fabrizio Felletti, Giovanni Muttoni

Journal of Sedimentary Research (SEPM)

... was then fit to the data by means of least-squares analysis, and errors were calculated using multivariate statistics (Jelinek 1978) with the software Anisoft...

Spatial and stratigraphic variation of marine paleoenvironments in the upper Miocene Gatun Formation, Isthmus of Panama

Austin J.W. Hendy

PALAIOS

...) Scatter plot of 48 species with DCA 1 scores graphed against mean bathymetry. An ordinary least-squares algorithm was used to establish correlation...

Simple X-Ray Diffraction Techniques to Identify Mg Calcite, Dolomite, and Magnesite in Tropical Coralline Algae and Assess Peak Asymmetry

Merinda C. Nash, Bradley N. Opdyke, Zhongwei Wu, Huifang Xu, Janice M. Trafford

Journal of Sedimentary Research (SEPM)

... modeling of XRD patterns combined with a least-squares fitting procedure, such as Rietveld refinement (Hunter 1998). This method has been used (e.g., Nash...

State of stress in the Illinois Basin and constraints on inducing failure

R. W. Lahann, J. A. Rupp, C. R. Medina, G. Carlson, and K. M. Johnson

Environmental Geosciences (DEG)

... tensor catalog (Herrmann et al., 2011) and Global Centroid Moment Tensor Catalog (Ekström et al., 2012). This method is a damped least squares inversion...

Analysis of global navigation satellite system data along the Southern Gas Corridor and estimate of the expected displacements

Giuliana Rossi, Riccardo Caputo, David Zuliani, Paolo Fabris, Massimiliano Maggini, and Panagiotis Karvelis

Environmental Geosciences (DEG)

..., it is robust, well tested, and of widespread use. A future improvement of the procedure will employ more rigorous methods, such as the weighted least...