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The AAPG/Datapages Combined Publications Database

Showing 1,682 Results. Searched 200,639 documents.

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Transactions: Gulf Coast Association of Geological Societies; 2016 Front Matter

Jennifer M. Smith-Engle, James J. Willis, Jill C. Willis, Norman C. Rosen, Dorene B. West

GCAGS Transactions

..., Using Corrected Bottom-Hole Temperatures 635 Wilson, Zachary, and Seiichi Nagihara Practical Application of Adaptive Least-Squares Reverse Time...

2016

Pollen, PB-210, and Opaque Spherules: An Integrated Approach to Dating and Sedimentation in the Intertidal Environment

James S. Clark , William A. Patterson III

Journal of Sedimentary Research (SEPM)

... excess activity from 6 cm to the surface dictate that this section be considered separately. Excluding the two surface values, least-squares analysis...

1984

The Role of Magnesium in the Crystallization of Calcite and Aragonite in a Porous Medium

Lurdes Fernandez-Diaz , Andrew Putnis , Manuel Prieto , Christine V. Putnis

Journal of Sedimentary Research (SEPM)

... 508V Guinier viewer. The lattice parameters of the different samples were refined using between 12 and 22 reflections and a least-squares program CELL...

1996

Structural and Stratigraphic Evolution of the Campos Basin, Offshore Brazil: Chapter 38: Analogs

W. U. Mohriak, M. R. Mello, G. D. Karner, J. F. Dewey, J. R. Maxwell

AAPG Special Volumes

... the Campos basin were determined for each well by fitting an exponential curve, in a least-squares sense, to the present-day variation of porosity...

1989

Dynamics of Bedforms in the Lower Mississippi River

David J. Harbor

Journal of Sedimentary Research (SEPM)

... lines show a least-squares linear regression. The downstream segment (triangles) has larger dunes for a given flow depth. FIG. 9. Enhancement of bedform...

1998

Distribution and Generation of the Overpressure System, Eastern Delaware Basin, Western Texas and Southern New Mexico

Ming Luo , Mark R. Baker , David V. LeMone

AAPG Bulletin

... of depth in Figure 16. A least-squares fit to the BHTs shown yields an average geothermal gradient of 21°C/km for War-Wink field with a surface temperature...

1994

Outcrop-based reservoir characterization: A composite phylloid-algal mound, western Orogrande basin (New Mexico)

Patrick D. Doherty, Gerilyn S. Soreghan, John P. Castagna

AAPG Bulletin

... into a mathematical grid using a least-squares calculation method and Surfer software. Mathematical gridding algorithms are subject to error, particularly...

2002

An integrated evaluation of hydrocarbon charge and retention at the Griffin, Chinook, and Scindian oil and gas fields, Barrow Subbasin, North West Shelf, Australia

Mark Brincat, Anthony Gartrell, Mark Lisk, Wayne Bailey, Luke Johnson, Dave Dewhurst

AAPG Bulletin

... (excluding the Ramillies-1 well), yields a correlation coefficient (R2) calculated from a least-squares regression of 0.98.Figure 7. Relationship between...

2006

Diagenetic characteristics of the Jurassic Navajo Sandstone in the Covenant oil field, central Utah thrust belt

W. T., Parry, Marjorie A. Chan,, Barbara P. Nash

AAPG Bulletin

... of petrographic point counting (1000 points per thin section, 300-m step) and least squares fit of mineralogy, mineral chemistry, and whole-rock chemistry using...

2009

Outcrop-constrained hydrogeological simulations of brine reflux and early dolomitization of the Permian San Andres Formation

Beatriz Garcia-Fresca, F. Jerry Lucia, John M. Sharp Jr., Charles Kerans

AAPG Bulletin

..., M., and Y. Eckstein, 1995, Use of weighted least-squares method in evaluation of the relationship between dispersivity and field scale: Ground Water...

2012

2015

Downstream Changes of Alpine Zircon Fission-Track Ages in the Rhone and Rhine Rivers

Matthias Bernet,, Mark T. Brandon, John I. Garver, Brandi Molitor

Journal of Sedimentary Research (SEPM)

... component of the mixture. We use a constrained weighted least-squares method to find best-fit estimates for the unknown proportions j. The probability...

2004

Paleomagnetic Data from Mustique, West Indies, suggest counterclockwise rotation in pre-Late Miocene rocks

Burmester, R.F. Beck, M.E. and Speed, R.C.

Geological Society of Trinidad & Tobago

... in sedimentary rocks, J Geophys. Res. 54,131-167. Kirschvink, J.L., 1980, The least-squares line and plane and the analysis of paleomagnetic data...

1995

Water-Rock Interactions in Sedimentary Basins

Yousif K. Kharaka, Robert W. Hull, William W. Carothers

Special Publications of SEPM

...) and distribution of major cations and anions. The 6D and 6180 values for these waters with the least-squares line drawn through them are shown...

1985

Clay Typing, Mineralogy, Kerogen Content and Kerogen Characterization from DRIFTS Analysis of Cuttings or Core

Michael Herron, MaryEllen Loan, Alyssa Charsky, Susan L. Herron, Andrew E. Pomerantz, Marina Polyakov

Unconventional Resources Technology Conference (URTEC)

... Tmax values. DRIFTS Mineralogy and FTIR The DRIFTS methodology of performing a weighted least squares regression of a sample spectrum on a library...

2014

Analysis of Recent and Historical Salt-Crust Thickness Measurements and Assessment of their Relationship to the Salt Laydown Project, Bonneville Salt Flats, Tooele County, Utah

W. W. White III, Moises Terrazas

Utah Geological Association

... method). The CPS/PC program uses the least squares algorithm to extrapolate thickness values from the actual data points to grid nodes that comprise...

2006

Reservoir Characterization and Modeling: A Look Back to See the Way Forward

Xinghe Yu, Y. Zee Ma, David Psaila, Paul La Pointe, Ernest Gomez, Shengli Li

AAPG Special Volumes

... performance data using the least squares method was proposed by Coats et al. (1970). Reservoir description based on well-logging data was conducted...

2011

Statistical Analysis of Turbidite Cycles in Submarine Fan Successions: Tests for Short-Term Persistence

Chengsheng Chen, Richard N. Hiscott

Journal of Sedimentary Research (SEPM)

... correlation, and Pearson's correlation) and the least-squares method. The utility and power of these methods are confirmed, below, by our results...

1999

Origin of overpressure and pore-pressure prediction in the Baram province, Brunei

Mark R. P. Tingay, Richard R. Hillis, Richard E. Swarbrick, Chris K. Morley, Abdul Razak Damit

AAPG Bulletin

... (Cp). density = density porosity.The Cp and tma can thus be determined using linear regression (least squares fit) from the density t crossplot...

2009

Estimation of kerogen porosity in source rocks as a function of thermal transformation: Example from the Mowry Shale in the Powder River Basin of Wyoming

Christopher J. Modica, Scott G. Lapierre

AAPG Bulletin

...). Dashed line is least-squares fit to data, and solid line is computed from the assumption that S2 yields are 85% carbon by weight. This assumption...

2012

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...

2002

Quantitatively evaluating the sources of taphonomic biasing of skeletal element abundances in fossil assemblages

Jason R. Moore, David B. Norman

PALAIOS

... of simple linear regression. Simple linear regression is also known as ordinary least squares (OLS) regression. OLS regression is a bivariate...

2009

Using Ground-Penetrating Radar and Capacitively Coupled Resistivity to Investigate 3-D Fluvial Architecture and Grain-Size Distribution of a Gravel Floodplain in Northeast British Columbia, Canada

Adrian S. Hickin, Benjamin Kerr, Thomas E. Barchyn, Roger C. Paulen

Journal of Sedimentary Research (SEPM)

..., M.H., and Barker, R.D., 1996, Rapid least-squares inversion of apparent resistivity pseudosections by a quasi-Newton method: Geophysical Prospecting, v...

2009

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...

2009

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