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The AAPG/Datapages Combined Publications Database
Showing 7,671 Results. Searched 200,693 documents.
Biogenic Structures in Outcrops and Cores. I. Approaches to Ichnology
Robert W. Frey, S. George Pemberton
CSPG Bulletin
... in rocks or shells show equally close fidelity with original environmental conditions, although those in shells are apt to suffer the same taphonomic fate...
1985
Patterned Cones in Permo-triassic Redbeds of Wyoming and Adjacent Areas
Donald W. Boyd, H. Thomas Ore
Journal of Sedimentary Research (SEPM)
... of the pattern-bearing layers must be the result of an equally distinctive set of conditions in the depositional environment and within the sediment soon after...
1963
Deformational Structures in Brazilian Coastal Dunes
Edwin D. Mckee, Joao Jose Bigarella
Journal of Sedimentary Research (SEPM)
... are north-easterly to easterly, characteristic of the trade winds, crossbeds in the Lagoa area dip nearly equally in all quadrants. Large parts...
1972
Supercritical Flow in Density Currents
Bryce M. Hand
Journal of Sedimentary Research (SEPM)
... show that equations derived for antidunes and hydraulic jumps in open channels are equally valid for density currents, provided a term is introduced...
1974
A Stochastic Anisotropic Coal Permeability Model Using Mercury Intrusion Porosimetry, MIP and Stress-Strain Measurements
Syed Shabbar Raza, Victor Rudolph, Tom Rufford, Zhongwei Chen
Unconventional Resources Technology Conference (URTEC)
.../cleats through the coal; 2) these cleats form parallel paths in the orthogonal face and butt cleat directions which provide the permeability; and 3...
2019
Computer Simulation Models of Salt Domes
James C. Howard
AAPG Bulletin
... occupying a nine-cell, orthogonal grid that is centered on the displacing element (Fig. 16). A random number is generated from a uniform distribution...
1971
Origin of Fabrics in Speleothems Composed of Columnar Calcite Crystals
Alan C. Kendall , Paul L. Broughton
Journal of Sedimentary Research (SEPM)
... crystals will commonly be inclined with respect to the substrate surface because the crystal with the faster-growing (or the more favourably-oriented...
1978
Estuarine Facies Models: Conceptual Basis and Stratigraphic Implications: PERSPECTIVE
Robert W. Dalrymple, Brian A. Zaitlin, Ron Boyd
Journal of Sedimentary Research (SEPM)
.... These three zones are not equally developed in all estuaries because of such factors as sediment availability, coastal zone gradient and the stage...
1992
Fractured Reservoirs of Middle East
E. J. Daniel
AAPG Bulletin
... at this inclination but with a different strike 3. Vertical or near-vertical breaks There are numerous intermediate directions among the inclined...
1954
Distribution of Holocene Marine Ostracoda from Belize: PART 1
James W. Teeter
AAPG Special Volumes
... margin with a straight, horizontal median part and equally inclined anterior and posterior parts, terminating abruptly at the anterior and posterior...
1975
Salt Structures of Gulf of Mexico Basin--A Review
Grover E. Murray
AAPG Bulletin
... be related to regional fracture zones (Fisk, 1944; Murray, 1956). Individual salt stocks stand vertically to slightly inclined, with any or all flanks...
1966
Fracture characterization in sigmoidal folds: Insights from the Siah Kuh anticline, Zagros, Iran
Giulio Casini, Indiana Romaire, Emilio Casciello, Eduard Saura, Jaume Vergés, Naiara Fernández, and David William Hunt
AAPG Bulletin
... and longitudinal terms refer to the fact that these sets are generally orthogonal (transversal) and parallel (longitudinal) to the trend of the belt and the fold...
2018
Computer Mapping: A Review of What is Available and What is Useful for Exploration Purposes
Nigel M. Waters
CSPG Bulletin
... of nonorthogonal or the more rigorous, orthogonal polynomials. Programs for fitting nonorthogonal polynomials and displaying the trend as a contour map printed...
1981
Preliminary Map of Fracture Patterns in Coal in the Western United States
Stephen E. Laubach, Roger Tyler, W. A. Ambrose, C. M. Tremain, M. A. Grout
Wyoming Geological Association
... position. Widely spaced "third" and "fourth" cleats are also prevalent. As a consequence of well-developed orthogonal fracture sets, dispersion in cleat...
1992
The Use of the Bimodal Production Decline Curve for the Analysis of Hydraulically Fractured Shale/Tight Gas Reservoirs
Christine Doughty, George J. Moridis
Unconventional Resources Technology Conference (URTEC)
... extent A perpendicular to the wellbore and a network of smaller secondary fractures orthogonal to the primary fracture. It is assumed that for a tight...
2018
Relationships Between Pore Pressure, Stresses, and Present-Day Geodynamics in the Scotian Shelf, Offshore Eastern Canada
N. A. Yassir , J. S. Bell
AAPG Bulletin
... equally in response to an increase in Sv (density × depth); ^sgrH therefore would not change (Figure 10). Breckles and van Eekelen (1981) observed...
1994
Exploration of the Rio Tinto Gossan, Northeastern Nevada: How Prospector S. Frank Hunt Discovered the Mountain City Copper Mine
Laurence P. James
Utah Geological Association
... inclined prospect shaft finally cut ore at 218 feet beneath the capping area in 1932. The vertical transition from a ferruginous gossan virtually lacking...
2006
Using Technology to Avoid Trespass Liability Based on Subsurface Intrusions of Hydraulic Fractures
Arash Dahi Taleghani, Keith Hall
Unconventional Resources Technology Conference (URTEC)
... the border would be equally likely to flow to White’s well as to Black’s. (Barnard v. Monongahela Natural Gas Co., 65 A. 801 (Pa. 1907)); (Kelly v...
2014
A Relict Triangle Zone at Benjamin Creek Gas Field, Southern Alberta Foothills: Geometry, Kinematics and Preservation
Roland G. Dechesne, James W. Muraro
CSPG Bulletin
... and processed for deep Palezoic targets. Shooting and recording parameters used were: 20 m group interval with 12 geophones over 20 m, 140 m shot interval, 3620...
1996
The Regional Structure of the Ouachita Mountains of Arkansas, A Hypothesis
George W. Viele
Kansas Geological Society
... are tightly appressed and inclined northward; folds in the Pinnacle Mountain and North Little Rock quadrangles are relatively open, though the axial...
1966
Structural Modification of Corals in Relation to Waves and Currents: Reef Biota
Richard R. Graus , John A. Chamberlain Jr. , Alexa M. Boker
AAPG Special Volumes
... inclined intothe current would experience a stress minimum. Branches pointing away from the current ( > 90°) have high stresses because FN augments WN...
1977
The Dead Sea Rift: Impact of Climate and Tectonism on Pleistocene and Holocene Sedimentation
Warren Manspeizer
Special Publications of SEPM
... pinching out toward the source on the west and flaring out downcurrent to the east area In the Their flanks are inclined at about 25 300...
1985
Control of Estuarine Valley-Fill Deposition by Fluctuations of Relative Sea-Level, Cretaceous Bearpaw-Horseshoe Canyon Transition, Drumheller, Alberta, Canada
R. Bruce Ainsworth, Roger G. Walker
Special Publications of SEPM
.... Within the estuary, there was lateral shifting of individual channels along with lateral accretion of inclined heterolithic stratification (IHS). The IHS...
1994
Permian Blanket Sandstones of Colorado Plateau
D. L. Baars
AAPG Special Volumes
... sorted, very calcareous, with large scale uniformly inclined cross-strata with an average dip of 20.5° and an average direction of S. 35° E. (Fig. 5-B...
1961
Origin of Rollover (1)
HONGBIN XIAO and JOHN SUPPE
AAPG Bulletin
... and inclined collapse (Gibbs, 1983; Jackson and Galloway, 1984; White et al., 1986). In vertical collapse, the hanging wall material drops down vertically...
1992