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The AAPG/Datapages Combined Publications Database
Showing 25,591 Results. Searched 195,387 documents.
The Rodessa Formation in Bossier Parish, Louisiana: Lithofacies Analysis of a Hydrocarbon-Productive Shallow Water Clastic-Carbonate Sequence
Jamsie L. Roberts , Brian E. Lock
GCAGS Transactions
... at 4388, field of view 2 wide. Truncation surface, wackestone overlain by shaley lime mudstone; (a) later, sand-filled burrow in depression on truncation...
1988
The Blasillo Field (Upper Miocene), Salina del Istmo Basin, Southeastern Mexico, Part 1: Regional Setting and Petroleum Geology
Humberto Torres-Sastré, Paul Weimer, Renaud Bouroullec, James Adson
GCAGS Transactions
... flattened on the RS–14 surface. Note the distinct onlap of sequences 1–6 and 9–14 onto the Blasillo salt body and the erosional truncation of sequence 8...
2014
Pliocene Sub-Willis Unconformity in Southeastern Texas: Forebulge to the Pliocene Mississippi Delta
Thomas E. Ewing
GCAGS Transactions
... exaggeration, 40x. The apparent truncation of the Miocene correlation surfaces by the base of Willis gives a revealing subcrop map (Fig. 5). The subcrop...
2016
Tectonic Setting of the San Juan Basin in the Jurassic
Elmer S. Santos, Christine E. Turner-Peterson
AAPG Special Volumes
.... Webster, 1984, U-Pb systematics and apparent ages of uranium ores, Ambrosia Lake and Smith Lake districts, Grants mineral belt, New Mexico: Economic...
1986
Geology of Late Cretaceous Mesaverde and Paleocene Fort Union Oil Production, Birch Creek Unit, Sublette County, Wyoming
D. O. Asquith
AAPG Bulletin
... structural and stratigraphic elements: (1) truncation of reservoir sandstone beds at the unconformity; (2) pinchout of individual sandstone beds within...
1966
Biostratigraphic Framework of Grand Banks
C. F. Upshaw , W. E. Armstrong , W. B. Creath , E. J. Kidson , G. A. Sanderson
AAPG Bulletin
... undoubtedly are complex. Because the full significance of the data cannot be established at this time, the effects of structural activity and truncation...
1974
Oklahoma City Oil--Second Crop from Preserved Subunconformity Source Rocks: DISCUSSION
Donald S. Stone
AAPG Bulletin
... City field is held in a truncation trap (Fig. 1). Also, the gas saturation in the pre-Pennsylvanian pool a Oklahoma City indicates...
1977
Deerfield Oil Field, Monroe County, Michigan
George D. Lindberg
AAPG Special Volumes
... recovery of 2,500 barrels per acre. This reservoir is of the gas-expansion type with no apparent water drive. The oil is dark green and has a gravity...
1948
Sequence Stratigraphy as a Tool for Interpretation of the Cockfield/Yegua in Southwestern Louisiana
Brian E. Lock , Sheila L. Voorhies
GCAGS Transactions
..., but as an example of what Peter Vail has called "apparent truncation" (Vail, 1987) and which he attributes to depositional thinning (sediment...
1988
Braided Fluvial to Marine Transition: The Basal Lower Cambrian Wood Canyon Formation, Southern Marble Mountains, Mojave Desert, California: REPLY
Christopher M. Fedo, John D. Cooper
Journal of Sedimentary Research (SEPM)
... taken from the limbs of trough cross-stratifi ation sets (apparent dip) rather than from true foreset-dip directions. Our paleocurrent pattern...
1991
High-Frequency Sequence Stratigraphy and Facies Architecture of the Sego Sandstone in the Book Cliffs of Western Colorado and Eastern Utah
John C. Van Wagoner
AAPG Special Volumes
...------------------------- Fig. 10. A cross section showing the details of sequence-boundary 2 expressed by 1) truncation and a basinward shift in facies below...
1991
Delta-Fed Turbidites Infilling Topographically Complex Basins: A New Depositional Model for the Annot Sandstones, SE France
H.D. Sinclair
Journal of Sedimentary Research (SEPM)
... infilling an irregular truncation surface; within the breccia are clasts of both the marl and the Nummulitic Limestones. The basal sandstone contact is also...
2000
Seismic Restorations: a New Technique for Sequence Boundary Identification and Correlations
Schuman Wu, Paul Weimer, Gareth Taylor
Geological Society of Malaysia (GSM)
... in the back of the earlier fault with a similar piggyback basin (Fig. 4c). All units were then folded or tilted and an erosional truncation surface...
1995
Chapter 13. Curvilinears: Curvilinear Features Visible on Small Scale Imagery as Indicators of Geologic Structures
Rex M. Peterson
Utah Geological Association
.... Many curvilinears are so large that they are not apparent on large-scale photos or photo mosaics. Because many curvilinears are very subtle...
1974
Middle Cambrian Lithostratigraphy of Southeastern Canadian Cordillera
D. K. Norris, R. A. Price
CSPG Bulletin
... on weathered surfaces. Bedding is not always apparent, and may be defined in terms of parallel zones of differing texture. Locally these are zones...
1966
Sequence Stratigraphic Correlation of Well-Log Cross Sections
James W. Mulholland
Rocky Mountain Association of Geologists
... boundary (SB), if an unconformity, is "a surface separating younger from older strata along which there is evidence of subaerial-erosional truncation...
1994
Zenith Pool, Stafford County, Kansas--An Example of Stratigraphic Trap Accumulation
W. C. Imbt
AAPG Special Volumes
.... The limited distribution of the Misener sand and limestone and Maquoketa dolomite; truncation of the producing formations at the north end of the pool...
1941
Subsurface Geology of the Joiner City Field, Carter County, Oklahoma
John Dale Hellman
Oklahoma City Geological Society
... the attitude of the pre-Pennsylvanian formations prior to truncation. There are one or two comments to be made on the written material because some...
1964
Statfjord Field--A North Sea Giant
R. H. Kirk
AAPG Special Volumes
... sections. The top of the Brent was encountered 66 ft (20 m) low to the eventual field oil-water contact (Fig. 9). The apparent truncation now...
1980
Big Geology for Big Needs
A. I. Levorsen
AAPG Bulletin
... variables involved. Thus, the wedge of permeability might be the result of the truncation of a pre-unconformity sequence of dipping formations; it may...
1964
Different scales of salt–sediment interaction during passive diapirism
Mark G. Rowan and Katherine A. Giles
AAPG Bulletin
.... It is the minibasin-scale deformation that defines the geometry of three-way truncation traps against diapirs or their equivalent welds and controls...
2023
Morphology Of Channels And Channel-Sand Bodies In The Glauconitic Sandstone Member (Upper Mannville), Little Bow Area, Alberta
John C. Hopkins, Shirley W. Hermanson, Don C. Lawton
CSPG Bulletin
... the horizon on top of the large channels in the area. Rapid variations in lithology are apparent from gamma-sonic or density logs, and the few cores...
1982
The Middle Cretaceous Urgonian Platform of Southeastern France: Chapter 32
Dave Hunt , Maurice E. Tucker
AAPG Special Volumes
... sequences largely on the basis of stratal geometries and/or stratal termination patterns as depicted in sequence stratigraphic models (slope truncation...
1993
Stratigraphy and Facies of the Dodsland Viking Tight Oil Resevoir
Ed Mathison
Williston Basin Symposium
... the Viking sand) as datum gives an apparent southward imbrication of Viking units 1-3 (Figs. 2a and 2b). The apparent southward imbrication of strata has been...
2013
Structure and Bathymetry of Western End of Bartlett Trough, Caribbean Sea
Norman G. Banks , Michael L. Richards
AAPG Special Volumes
..., folding and truncation of what may be either older sedimentary or basement rocks are apparent. The 10-15-km-wide terrace between the 1,000...
1969