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The AAPG/Datapages Combined Publications Database
Showing 1,431 Results. Searched 200,630 documents.
An Application of the Truncated Pluri-gaussian Method for Modeling Geology
A. Galli, G. Le Loch, F. Geffroy, R. Eschard
AAPG Special Volumes
... caused by the vertical stacking of several depositional cycles. The fourth-order sequences have been interpreted as the result of high-frequency, relative...
2006
Analysis of Temperatures and Thermal Processes in the Uinta Basin
Sean D. Willett, David S. Chapman
CSPG Special Publications
... by the A.A.P.G. (A.A.P.G. 1976) in which a correction, Tc, is given as a fourth-order polynomial in depth, z Fitting this polynomial in a least squares sense...
1987
The Stratigraphy Machine
Andrew D. Miall, John M. Holbrook, Janok P. Bhattacharya
Journal of Sedimentary Research (SEPM)
... within macroforms generated by seasonal or longer-term flood events. Fourth-order surfaces represent the upper bounding surfaces of macroform...
2021
Formation of Cardium Erosion Surface E5, and Associated Deposition of Conglomerate: Carrot Creek Field, Cretaceous Western Interior Seaway, Alberta
K. M. Bergman, R. G. Walker
CSPG Special Publications
... of 167,000 to 333,000 years. We specifically do not refer to these as “fourth-order” cycles; firstly because they cannot be identified using the same...
1988
An Integrated Lithostratigraphic and Palynostratigraphic Study of the Ostracode Zone and Adjacent Strata in the Edmonton Embayment, Central Alberta
Indranil Banerjee, Edward H. Davies
CSPG Special Publications
... et al. 1987), and may possibly represent fourth-order fluctuations within a third-order cycle that terminated at the Aptian-Albian boundary...
1988
Stratigraphic Relationships of a Miocene Mixed Carbonate-Siliciclastic Interval in the Badak Field, East Kalimantan, Indonesia
James A. Hook, Moyra E. J. Wilson
Indonesian Petroleum Association
...) note that some workers relate similar cyclic deltaic deposits elsewhere to fourth order sequence stratigraphic cyclicity. However, more work...
2003
Detection and Significance of Lineaments and Lineament Intersections in Parts of the Northern Cordillera
Jacques B. Wertz
Utah Geological Association
... or fourth order) within a distance of less than a mile. Albers, J. P., 1967, BELT OF SIGMOIDAL BENDING AND RIGHT-LATERAL FAULTING IN THE WESTERN GREAT...
1974
Chaos in El Paso?
R. K. Goldhammer, Daniel J. Lehrmann
West Texas Geological Society
... from 10,000 - 400,000 years, and a hierarchy of high-frequency cycle periods may be designated with fifth-order cycles (0.01-0.1 myr) and fourth-order...
1996
Sedimentologic Reservoir Characterization of Tensleep Sandstone, South Casper Creek Field, Wyoming
R. D. Cole, C. E. Mullen
Wyoming Geological Association
... represent minor erosional events that occur during migration of a dune (i.e., reactivation surfaces). Fourth-order surfaces represent the boundaries...
1992
Regional Tectonic and Hydrocarbon-Trap Modeling Along the Louisiana Offshore
Allen Lowrie, Neil M. Sullivan, Karen S. Hoffman
GCAGS Transactions
... and subsequent precipitation. If the basin sill is near sea level, fluctuating fourth order (Milankovitch) eustatic cycles could provide the recurring...
1990
Characterization of the Source Horizons Within the Late Cretaceous Transgressive Sequence of Egypt: Chapter 7
Vaughn D. Robison, Michael H. Engel
AAPG Special Volumes
... phosphorite horizons within each group of phosphorites may represent the flooding surface of an individual parasequence or fourth order sequence...
1993
The Concept of Autocyclic and Allocyclic Controls on Sedimentation and Stratigraphy, Emphasizing the Climatic Variable
C. Blaine Cecil
Special Publications of SEPM
... et al., 1977) often appear to be the result of aperiodic allocyclic processes. Fourth-order sequences are primarily the result of periodic orbital...
2003
Cyclostratigraphic Approach to Earths History: An Introduction
Alfred G. Fischer, Bruno D'Argenio, Isabella Premoli Silva, Helmut Weissert, Vittoria Ferreri
Special Publications of SEPM
... of these, the Middle Purbeck cycle. This is divisible into five fourth-order sequences corresponding to the 400 ky eccentricity cycle. Each...
2004
Mississippi's Revised Neogene Stratigraphy in Northern Gulf Context
Ervin G. Otvos
GCAGS Transactions
... thin, shelly, limestone lenses formed through cementation and recrystallization of molluscan fragments (Campbell and Otvos, 1992). Numerous fourth...
1994
Patterned Cones in Permo-triassic Redbeds of Wyoming and Adjacent Areas
Donald W. Boyd, H. Thomas Ore
Journal of Sedimentary Research (SEPM)
... of 39 degrees. Most of the specimens exhibit third or fourth order branching, and fifth order branching is observable on one specimen. The ridges...
1963
The Evolution of Mesozoic-Cenozoic Sedimentary Basins along the Japanese Convergent Margin: Chapter 16: Sea-Level and Seismic Stratigraphic Studies
Makoto Ito, Fujio Masuda
AAPG Special Volumes
...). Periodicity of each cycle corresponds to fourth-order cycles (Miall, 1984). The average thickness of each cycle is from ten to a few tens of meters (Figure...
1992
Well Performance and Completion Efficiency Assessment in the Delaware Basin using the Diffusive Time of Flight
Jaeyoung Park, Yuxing Ben, Vivek Muralidharan
Unconventional Resources Technology Conference (URTEC)
.... The assumption is that 𝑤(𝜏) can be expressed with fourth-order B-spline basis functions: 𝑛 𝑏𝑎𝑠𝑖𝑠 (6) 𝑤(𝜏) = ∑ 𝛼 𝑘 𝜙 𝑘 (𝜏) 𝑘=1 where...
2021
Deriving Elastic and Petrophysical Properties From Small Sample Volumes Using Digital Rock Analysis
Vegar Ravlo, Pål-Eric Øren, Cathrine Ringstad
Unconventional Resources Technology Conference (URTEC)
... micro-porosity is estimated to be φμ ≃ 40%. A fourth order Runge-Kutta method is used to solve the DEM equations. Table 6 summarizes the elastic input...
2022
New Depositional Architecture for an Old Giant: The Matzen Field, Austria
Reinhard Fuchs, Walter Hamilton
AAPG Special Volumes
.... The 9th Tortonian horizon is a textbook example of a shelf-slope-basin succession, laterally as well as vertically (fourth-order cycle) (Knox et al., 1999...
2006
Chapter 12: Mexico—Area 1—Amoca, Miztón, and Tecoalli Oil Discoveries, Sureste Basin, Gulf of Mexico
Tito Andrea Bianco, Emanuele Tozzi
AAPG Special Volumes
... with associated minor sequence boundaries and transgressive surfaces, developed in response to the high-order cyclicity (fifth and fourth order...
2021
Pedofeatures from a Modern Soil Chronosequence, a Technique for Estimating the Relative Age of Ancient Pedogenic Features
David F. Ufnar
GCAGS Transactions
... estimates presented here might help constrain the order of sea level (e.g., fourth, fifth) oscillations that affected the Cretaceous deposits...
2006
Hydraulic Fracture Geometry Improvements Through Oriented Perforations: Case Study in Vaca Muerta Formation
Martín Vítolo, Marcelo Frydman, Juan José Fernandez, Leandro Quintana, Ivan Lanusse, Federico Gonzalez Tomassini, Juan Pablo Palacio, Victoria Lazzari, Alfredo Moler, Sofia Marinari
Unconventional Resources Technology Conference (URTEC)
... of the Upper zone (Upper Contrast) and corresponds to a high gamma-ray and resistivity peak, interpreted as a flooding surface within a fourth-order...
2025
Coupling Spatial and Frequency Uncertainty Analyses in Reservoir Modeling: Example of Judy Creek Reef Complex in Swan Hills, Alberta, Canada
Y. Zee Ma, Andrew Seto, Ernest Gomez
AAPG Special Volumes
... with about 350 wells drilled and nearly 6000 m (19,685 ft) of cores. The reservoir contains eight third- to fourth-order transgressive-regressive (T-R...
2011
Carbonate Dissolution on the Muir Seamount (Western North Atlantic): Interglacial/Glacial Changes
William L. Balsam
Journal of Sedimentary Research (SEPM)
... glacial (Fig. 3D) time, fourth-order equations were used. Higher order and statistically weaker equations are required to explain glacial data sets...
1983
Fluvial Bars Reconstructed from a Deep, Straight Channel, Upper Carboniferous Coalfield of Northeast England
R. Stuart Haszeldine
Journal of Sedimentary Research (SEPM)
... hierarchy (Fig. 3, compare with Brookfield, 1977). Fourth-order bounding surfaces always occur within sets. Third- and second-order surfaces separate...
1983