Mechanical and fracture stratigraphy

Stephen E. Laubach, Jon E. Olson, Michael R. Gross

AAPG Bulletin

... defined as the total fracture trace length along vertical core sections (essentially the summation of fracture heights) normalized by the thickness...

The use of spectral recomposition in tailored forward seismic modeling of outcrop analogs

Mark Tomasso, Renaud Bouroullec, David R. Pyles

AAPG Bulletin

.... The individual forward seismic models generated are then spectrally recomposed by summation of the individual volumes to generate a final forward seismic...

Permeability and acoustic velocity controlling factors determined from x-ray tomography images of carbonate rocks

Nathaly L. Archilha, Roseane M. Missagia, Cathy Hollis, Marco A. R. de Ceia, Samuel A. McDonald, Irineu A. Lima Neto, David S. Eastwood, and Peter Lee

AAPG Bulletin

... inclusion. Finally, the summation is over all the N inclusion types with its volume concentration (xi). For the complete tensor mathematical formulation...

Quantifying sediment supply to continental margins: Application to the Paleogene Wilcox Group, Gulf of Mexico

Jinyu Zhang, Jacob Covault, Michael Pyrcz, Glenn Sharman, Cristian Carvajal, and Kristy Milliken

AAPG Bulletin

... is quantified. Because this one-at-a-time analysis does not account for interactions between the variables, the summation of change for each variable does not sum...

Mathematical model for calculating the horizontal principal stress of a faulted monoclinal structure in southwest Qaidam Basin, China

Xiangyu Fan, Qiangui Zhang, Meiheng Duan, Yang Yang, Qiang Duan, Xiaohong Chen, and Da Lv

AAPG Bulletin

..., a piecewise summation method was used to calculate the vertical stress (Fan et al., 2014):where σv (MPa; 1 MPa = 145 psi) is the vertical stress, κ...

Classification of elemental chemofacies as indicators of cement diagenesis in mudrocks of the Permian Spraberry Formation and Wolfcamp formation, western Texas

Autumn L. Eakin, Julia S. Reece, Kitty L. Milliken, Robert Locklair, and Andrew P. Rathbun

AAPG Bulletin

...) are normalized such that the summation of each multiplied component equals 100%. (A) The x-ray fluorescence (XRF) measurements are plotted in ternary...

Molecular dynamics simulation of the coupling and distribution patterns of CO2 sequestration and slit pore media

Jingling Xu, Gaoyang Chen, Ling Zan, and Songwei Guo

AAPG Bulletin

... electrostatic terms with the particle–particle-particle–mesh (PPPM) solver instead of the Ewald summation (Luty et al., 1994). The cross terms were determined...

Study on microscale mechanical properties of minerals and organic matter in shale based on atomic force microscopy

Zhuo Gong, Shangbin Chen, Hubert Ishimwe, Shaojie Zhang, Jamil Khan, Yang Wang, and Xiong Sun

AAPG Bulletin

... notation as: where aij are elements of the matrix A; i and j are free indices in tensor notation, following Einstein’s summation convention; n...

Origin of the Lower Cretaceous Heavy Oils (“Tar Sands”) of Alberta, by Michael S. Stanton, #10071 (2004).

Search and Discovery.com

Geologic Framework, Cenozoic History, and Modern Processes of Sedimentation on the North Carolina Continental Margin

Albert C. Hine, Stanley R. Riggs

Special Publications of SEPM

... by the summation Figure 12. A composite trace formed by the summation of closely spaced acoustic horizons. Note that some of closely spaced acoustic...

Tectonostratigraphic Framework of the Geysers-Clear Lake Region, California

Robert J. McLaughlin, Henry N. Ohlin

Pacific Section SEPM

..., excluding Qp, which remain after subtraction of Lv from Lt. Qp and Lv (=V + Vm) percentages here are determined from the summation of Qp + Lv (=V (Ls...

Environmental influence on burrow system features of a colonial and fossorial rodent: implications for interpreting fossil tetrapod burrows

M. Cristina Cardonatto, Ricardo Nestor Melchor

PALAIOS

... in the cast (Cardonatto and Melchor 2020). Complexity of a burrow system (Co).—Summation of the number of entrances þ number of segments þ number...

Maastrichtian atmospheric pCO2 and climatic reconstruction from carbonate paleosols of the Marília Formation (southeastern Brazil)

Maurícius Nascimento Menezes, Patrick Führ Dal' Bó, Jon J. Smith, Amanda Goulart Rodrigues, Álvaro Rodríguez-Berriguete

Journal of Sedimentary Research (SEPM)

... suggested that summation of base oxides (CaO, MgO, K2O, Na2O) is an efficient and more comprehensive measurement of weathering, being related to MAP...

Genetic Global Geomorphology: A Prospectus

Elazar Uchupi, K. O. Emery

Special Publications of SEPM

... is a summation of all these events The configuration of a given region may not change in the Consequently at systematic manner described by Davis...

A Multidisciplinary Analysis of Belly River-Brazeau (Campanian) Fluvial Channel Reservoirs in West-Central Alberta, Canada

Peter E. Putnam

CSPG Bulletin

... twenty professional and support personnel. The following discussion of these results is, by necessity, a summation of the major findings...

Hydrothermal Effects on Recent Diatomaceous Sediments in Guaymas Basin--Generation, Migration, and Deposition of Petroleum: Chapter 38: Part VI. Hydrothermal Processes

Bernd R.T. Simoneit

AAPG Special Volumes

... *. CPI = Carbon Preference Index: for hydrocarbons it is expressed as a summation of the odd carbon number homologs over a range divided...

Natural History of the Gulf Coast Crude Oil: Part II. Origin and Evolution of Petroleum: Group 3. Variation in Physical Properties

Donald C. Barton

AAPG Special Volumes

..." crude oil at any depth can be calculated by summation of the respective values of the "normal" lines for the several constituents. An assumption...

Interpretation Methods in the Exploration of Oligocene-Miocene Carbonate Reservoirs, Offshore Northwest Madura, Indonesia

David C. Carter, Dwi Mandhiri, Robert K. Park, Imron Asjhari, Syaiful Basyuni, Sergey Birdus, John P. Bradfield, Ary Iriawan, Meutia Nasfiah, M.A. Agung Nugroho

Indonesian Petroleum Association

... fold with a 6.25 m common mid-point (CMP) increment and a 25 m cross-line increment. A two-to-one trace summation, performed during processing...

Testing Laramide Hypotheses for the Colorado Front Range Arch Using Minor Faults

Eric A. Erslev, Scott M. Larson

Rocky Mountain Association of Geologists

.... But the summation of a total strain requires knowledge of the amount of slip on each minor fault and slip can not be estimated for the vast majority...

Alberta

W. H. Parsons

CSPG Special Publications

... estimate of the ultimate hydrocarbon reserves trapped in each sedimentary unit, the summation of which would provide the estimate of the ultimate...

Influence of Mixtures of Grain-Size Populations on the Parametric and Modal Characteristics of Coastal Sands (Herault, Mediterranean Sea, France)

J. Paul Barusseau

Journal of Sedimentary Research (SEPM)

... performed the summation of two theoretical log-normal distributions by varying the relative proportions of the components. The program also computes...

Fruit Ecology of Eocene and Neogene Plant Assemblages in Europe: Tracing Shifts in Dispersal Syndromes

Johanna Kovar-Eder, Ute C. Knörr, Petr Mazouch

PALAIOS

... the fossil leaf and pollen record. PALAIOS 889 FRUIT DISPERSAL IN THE EOCENE AND NEOGENE TABLE 1—Summation of localities studied; full references...

African Oil -- Past, Present, and Future

Andy C. Clifford

AAPG Special Volumes

..., of which some already may have been produced or proven. A summation of individual play assessments gives the best result, but, if data are lacking...

The Misener Sandstone in Portions of Lincoln and Creek Counties, Oklahoma

Paul Edward Bauernfeind

Oklahoma City Geological Society

... of Misener deposition. In summation, the Misener in the northeastern two-thirds of the area was deposited in stream or river channels that drained...

Geology of the Strang Area, Mayes County, Oklahoma

I. D. Simpson Jr.

Tulsa Geological Society

... the "Index to the Stratigraphy of Oklahoma" in 1925. Charles E. Decker compiled the characteristic fossil lists. This was the first complete summation...