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The AAPG/Datapages Combined Publications Database
Showing 1,739 Results. Searched 200,619 documents.
Tidal-Bundle Sequences in the Jordan Sandstone (Upper Cambrian), Southeastern Minnesota, U.S.A.: Evidence for Tides Along Inboard Shorelines of the Sauk Epicontinental Sea
Carl H. Tape,, Clinton A. Cowan, Anthony C. Runkel
Journal of Sedimentary Research (SEPM)
... opposing dip directions. Thin (< 10 cm) shale beds, laminae, and intraclasts are common locally. Both symmetric and asymmetric ripples are common...
2003
Sedimentology of Modern, Inclined Heterolithic Stratification (IHS) in the Macrotidal Han River Delta, Korea
Kyung Sik Choi,, Robert W. Dalrymple, Seung Soo Chun, Seong-Pil Kim
Journal of Sedimentary Research (SEPM)
... lamination is moderately common, with deformed intervals reaching up to 20 cm thick (Fig. 10). Both symmetric and plunging asymmetric folds are present...
2004
Fingerprints of Fluid Flow: Chemical Diagenetic History of the Jurassic Navajo Sandstone, Southern Utah, U.S.A.
Brenda Beitler, W.T. Parry, Marjorie A. Chan
Journal of Sedimentary Research (SEPM)
... present and show a different type of distribution (symmetric versus skewed) between apparently mobile and stable mineralogies (Fig. 5). Redbed Bleaching...
2005
50-Million-Year-Long Record of Glacial to Postglacial Marine Environments Preserved in a Carboniferous–Lower Permian Graben, Northern Perth Basin, Western Australia
N. Eyles, A.J. Mory, C.H. Eyles
Journal of Sedimentary Research (SEPM)
... lamination, asymmetric (current) and symmetric (wave) ripple forms (Fig. 12), and rare trough and planar cross bedding. Rippled facies show evidence...
2006
Geostatistical Simulation and Numerical Upscaling, to Model Ground-Water Flow in a Sandy-Gravel, Braided River, Aquifer Analogue
Fabrizio Felletti, Riccardo Bersezio, Mauro Giudici
Journal of Sedimentary Research (SEPM)
... to orthogonal directions of the average hydraulic gradient, are sufficient to compute Keq, which is symmetric. As a consequence, three flow problems were...
2006
Evolution of the Late Pleistocene–Holocene Dead Sea Basin from Sequence Statigraphy of Fan Deltas and Lake-Level Reconstruction
Yuval Bartov, Yehouda Enzel, Naomi Porat, Mordechai Stein
Journal of Sedimentary Research (SEPM)
...-front environment. Symmetric ripples and small-scale cross-beds are abundant. A flooding surface was followed by a dark brown silty unit (8.4 ± 0.2...
2007
Structure and Stratigraphy of San Francisco Mountains, Western Utah
Edwin H. East
AAPG Bulletin
... Click to view image in GIF format. Fig. 10. [Grey Scale] Small symmetric fan fold in Kanosh Shale of Pogonip Group, just below thrust plane in Barrel...
1966
Stratigraphy and Petrology of Crow Mountain Sandstone Member (Triassic), Chugwater Formation, Northwestern Wyoming
Bruce Tohill , M. Dane Picard
AAPG Bulletin
... sandstone and siltstone unit. Orientations of symmetric ripple marks (azimuths at right angles to strike of crests) correspond closely in sense...
1966
Middle Devonian Muskeg Evaporites of Western Canada
A. M. Klingspor
AAPG Bulletin
..., indicating relative stability of this feature throughout the epoch. It must be a mitted, however, that the otherwise rather symmetric basin plan is grossly...
1969
Middle Pennsylvanian Rocks of Eastern Great Basin
Mark Rich
AAPG Bulletin
... with a slowly rising sea level in time T-1, reaching maximum submergence in T-2, and ending with some gradual sea level fall but mostly stillstand. A symmetric...
1971
Stratigraphy, Structure, and Zonation of Large Silurian Reef at Delphi, Indiana
Indiana University Paleontology Seminar
AAPG Bulletin
... lower to higher horizontal planes, and assuming some forereef-backreef differentiation, the zonal distribution should change from symmetric to asymmetric...
1980
Geodynamic Peaks in Alpinotype Orogenies and Changes in Ocean-Floor Spreading During Late Jurassic-Late Tertiary Time
Werner Schwan
AAPG Bulletin
... axis or in the type of spreading (symmetric or asymmetric) as well as through the reactivation of the rifting and spreading process (Vogt et al, 1969...
1980
Triassic Rocks of Argana Valley, Southern Morocco, and Their Regional Structural Implications
Roy H. Brown
AAPG Bulletin
... laterally within 10 to 50 m. Sandstones and some siltstones have small trough cross-beds, symmetric and asymmetric ripple marks, parallel laminae, and flaser...
1980
Structural Framework, Stratigraphy, and Evolution of Brazilian Marginal Basins
H. A. O. Ojeda
AAPG Bulletin
... symmetric) along the intumescence axis, and (b) asymmetric rift valleys, located between the central graben and the stable craton (not affected by crustal...
1982
Zuni Sequence in Williston Basin--Evidence for Mesozoic Paleotectonism
George W. Shurr , Lawrence O. Anna , James A. Peterson
AAPG Bulletin
... (UK-1), specifically that associated with the Greenhorn Formation, are relatively symmetric. Three cycles in the Upper Cretaceous (UK-2, UK-3, UK-4...
1989
Occurrence of Fracture-Hosted Impsonite and Petroleum Fluid Inclusions, Quebec City Region, Canada (1)
JEFFREY R. LEVINE , IAIN M. SAMSON , and REINHARD HESSE
AAPG Bulletin
..., but their presence is uncertain. Water was not detected in the Raman spectra. The methane symmetric stretching peaks for these inclusions occur at 2909...
1991
Divergent Wrench Faulting in the Belize Southern Lagoon: Implications for Tertiary Caribbean Plate Movements and Quaternary Reef Distribution
Maria Ester Lara
AAPG Bulletin
... view. Half-graben forms, rather than symmetric full grabens, are identified as the fundamental structural unit in rift zones, at least during early...
1993
Permeability Prediction from Geologic Models
Steven Bryant , Christopher Cade , David Mellor
AAPG Bulletin
... original pack that we use here is roughly spherical. Thus, imposing a spherically symmetric pressure gradient on the network is convenient. However, when...
1993
Thermal Maturation and Organic Richness of Potential Petroleum Source Rocks in Proterozoic Rice Formation, North American Mid-Continent Rift System, Northeastern Kansas
K. David Newell , Robert C. Burruss , James G. Palacas
AAPG Bulletin
... by the mineral matrix (Katz, 1983; Dembicki, 1992), our data are consistent and the S2 peaks on the pyrograms are symmetric and distinct. Microscopy...
1993
Hydrocarbon exploration potential within intraplate shear-related depocenters: Deseado and San Julian basins, southern Argentina
Juan F. Homovc, Luis Constantini
AAPG Bulletin
... and transpressional highs. The main graben is symmetric, trends east-west, and contains 3500 m of sediments (Figure 10). This graben contains a large east...
2001
Polyphase deformation of diapiric areas in models and in the eastern Prebetics (Spain)
Eduard Roca, Maura Sans, Hemin A. Koyi
AAPG Bulletin
... al., 1998) (Figure 4). Although they show a symmetric graben structure on both sides of the diapir, the overburden units and basin-fill sediments...
2006
Normal fault growth and its function on the control of sedimentation during basin formation: A case study from field exposures of the Upper Cambrian Owen Conglomerate, West Coast Range, western Tasmania, Australia
Christian Alistair Noll, Mike Hall
AAPG Bulletin
... on the central segment. Whereas most segments exhibit symmetric displacement profiles, the central segments indicate partial asymmetry...
2006
Predicting the depth of viscous stress peaks in moving salt sheets: Conceptual framework and implications for drilling
Ruud Weijermars and Martin P. A. Jackson
AAPG Bulletin
... coordinate system is fixed halfway up in the salt layer, parallel to its upper and lower boundaries. By contrast, the Poiseuille flow is symmetric about...
2014
Geomechanics of hydraulic fracturing microseismicity: Part 2. Stress state determination
Seth Busetti, and Ze’ev Reches
AAPG Bulletin
..., and (3) ahead of a hydraulic fracture, near the crack tip region (note that although the figure depicts an idealized symmetric bi-wing fracture, fracture...
2014
Failure of cap-rock seals as determined from mechanical stratigraphy, stress history, and tensile-failure analysis of exhumed analogs
E. S. Petrie, J. P. Evans, and S. J. Bauer
AAPG Bulletin
... to 30 wt. % Fe between bleached and unbleached samples (Table 1). The bleached zones range from mm to m in width and are generally symmetric across...
2014