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The AAPG/Datapages Combined Publications Database
Showing 94,203 Results. Searched 195,354 documents.
Joints, tensile strength and preferred fracture orientation in sandstones. New Brunswick and Prince Edward Island, Canada
E.Z. Lajtai, P. Stringer
Atlantic Geology
... a preferred fracture orientation which corre- Fig. 2 - Histograms of joint strike fre quency showing joint sets , and , in two orthogonal joint...
1981
Abstract: Joint network distribution and significance in the Variscan series of the northern margin of the Zag Basin (Anti-Atlas, Morocco); #90137 (2011)
Hassan OUANAIMI and Jean-Pierre PETIT
Search and Discovery.com
... attitude (O1/O2) to previous ones. Most of folds contain at least two sets of orthogonal joints: A/T and O1/O2 with frequent (typical) mutual...
2011
ABSTRACT: Natural Fracture Plays in an Early Palaeozoic Frontier (Eastern Warburton) Basin, South Australia, by Xiaowen Sun; #90913(2000).
Search and Discovery.com
2000
Estimating fracture trace intensity, density, and mean length using circular scan lines and windows
M. B. Rohrbaugh Jr., W. M. Dunne, M. Mauldon
AAPG Bulletin
... and length bias when sampling fracture traces. (A) Fracture pattern with two sets sampled by three progressively larger circles (dots = trace centers...
2002
Aeromagnetic Lineament Study of the Highland Valley Area, British Columbia
David A. Smith
Utah Geological Association
... are distributed directionally as a pronounced NS-EW pairset and two sub-sets. The sub-sets may be interpreted as two orthogonal pairsets (the preferred...
1974
Two-dimensional simulation of controls of fracture parameters on fracture connectivity
Kajari Ghosh, Shankar Mitra
AAPG Bulletin
... and a second set of cross fractures. (c) Two orthogonal set of fractures where both sets have similar characteristics.The results of the simulations are compared...
2009
Joint and Fracture Patterns in Basement and Sedimentary Rocks in the Sudetes Mountains
Tomasz Jerzykiewicz, Michal Mierzejewski, Andrzej Zelazniewicz
Utah Geological Association
... was developed, and the planes belonging to the two complementary sets cut each other along approximately the lines (vector σ2) steadily steepened...
1974
Abstract: The Colorado River Extensional Corridor: An Analog for the Early Stages of Passive Margin Formation, by K. K. Beratan and J. E. Nielson; #91009 (1991)
Search and Discovery.com
1991
Late Cretaceous Chemical Remagnetization of the Paleozoic Carbonates from the Undeformed Foreland of the Western Canadian Cordillera
Philippe Robion, Jean Luc Faure, Rudy Swennen
AAPG Special Volumes
... constrains us to gather samples from different sites in two sets for reconstructing the paleomagnetic pole position. Therefore, a mean latitude...
2004
Regional Fracture Analysis in Western Valley and Ridge and Adjoining Plateau, West Virginia and Maryland: ABSTRACT
S. L. Dean, M. Baranoski, L. Bertoli, G. Kribbs, T. Stephens, B. Kulander, D. Lockman, D. Mumpower
AAPG Bulletin
... are pervasive throughout the entire region. Most commonly only two, or at the most three, joint sets are present at the scale of the individual outcrop...
1983
Chapter 13. Curvilinears: Curvilinear Features Visible on Small Scale Imagery as Indicators of Geologic Structures
Rex M. Peterson
Utah Geological Association
... with dozens of sets of circles that overlap and these are intersected by various other arcs (as in Figs. 1 and 2), then it is necessary to add other...
1974
Abstract: Estimating Fracture Intensity Using Circular Scanlines, by M. B. Rohrbaugh, Jr., M. Mauldon, and W. M. Dunne; #90928 (1999).
Search and Discovery.com
1999
Chapter 4. Great Plains & Central United States: Bedrock Jointing on the Alberta Plains
Elkanah A. Babcock
Utah Geological Association
... unit of jointing is an orthogonal system consisting of two sets of extension fractures. Two or more orthogonal systems may be present at a given...
1974
Fractured reservoirs in the Eastern Foothills, Colombia, and their relationship with fold kinematics
Javier Tamara, Andrés Mora, Wilmer Robles, Andreas Kammer, Alberto Ortiz, Nelson Sanchez-Villar, Alejandro Piraquive, Luz Helena Rueda, Wilson Casallas, Jaime Castellanos, Jorge Montaña, Luis Guillermo Parra, Jaime Corredor, Ángela Ramirez, and Enus Zambrano
AAPG Bulletin
... of fracture sets as arrows and fracture intensity as colored circles. Maps for each fracture system are shown separately, (A) northeast–southwest set, (B...
2015
Novel 3-D Field-scale Characterization of Reservoir Fractures Using Surface Seismic Data by the Double-Beam Method and Field Applications
Yingcai Zheng, Hao Hu, Xinding Fang, Robert Stewart
Unconventional Resources Technology Conference (URTEC)
... with a horizontal reservoir model containing two orthogonal coexistent fracture sets (Zheng et al., 2013). In this paper, we will show another...
2018
Abstract: Fractures of a Triassic Carbonate Reservoir in Northeastern British Columbia, Canada, by T. Joubert and C. Rice; #90942 (1997).
Search and Discovery.com
1997
Lineaments and Their Tectonic Implications in Rocky Mountains and Adjacent Plains Region: ABSTRACT
Edwin K. Maughan, William J. Perry, Jr.
AAPG Bulletin
... 1349 67 8. (August) Two orthogonal sets of lineaments in Phanerozoic rocks of the Rocky Mountains and adjacent plains region probably reflect...
1983
Lineaments and Their Tectonic Implications in Rocky Mountains and Adjacent Plains Region: ABSTRACT
Edwin K. Maughan, William J. Perry, Jr.
AAPG Bulletin
... 856 69 5. (May) Two orthogonal sets of lineaments in Phanerozoic rocks of the Rocky Mountains and adjacent plains region probably reflect recurrent...
1985
Abstract: Fracture Connectivity Patterns of Folded Carbonates, Teton Anticline, Sawtooth Range, Montana, by Kajari Ghosh and Shankar Mitra; #90078 (2008)
Search and Discovery.com
2008
ABSTRACT: Determination of in-Situ Stress and Other Structural Elements Using Sonic Cross-Dipole Waveforms and Image Logs, by Adrian Manescu and Peter Bright; #90913(2000).
Search and Discovery.com
2000
Abstract: Weakly Supervised Structural Interpretation Using Projection Matrices for Latent Space Factorization;
Oluwaseun Joseph Aribido, Ghassan AlRegib
Search and Discovery.com
... space of the model into two orthogonal subspaces using projection matrices. The projection matrices are constrained to be orthogonal and additive. We...
Unknown
Pebble Shape (and Size!): REPLY
Werner K. Illenberger
Journal of Sedimentary Research (SEPM)
... investigation hereof is warrante but is beyond the scope of this discussion. If there is only spurious correlation between two orthogonal variables, then I...
1992
Elk Hills Monterey Formation - Challenge of Incorporating Complex Natural Fractures to Improve Production Understanding
Robert Gales, Rad Sobczyk, Nicholas Harvey
Unconventional Resources Technology Conference (URTEC)
... of the stereonet was considered to be bedding orthogonal. These clusters were removed from the data set. To produce the fracture sets the construction of Polar...
2018
Chapter 14. Non-Serious: Linesmanship: Guidelines for a Thriving Geologic Artform
Donald U. Wise
Utah Geological Association
... meet at angles somewhat more than 45°. If necessary, “orthogonal” can mean any two linears which intersect. This supports a general observation that most...
1974
Crustal Shear Patterns and Orogenesis: ABSTRACT
J. D. Moody
AAPG Bulletin
... are shown and analyzed, and it is concluded that two orthogonal primary compressional shear sets, which are essentially wrench fault zones, exist world...
1965