Welcome to the new Datapages Archives
Datapages has redesigned the Archives with new features. You can search from the home page or browse content from over 40 publishers and societies. Non-subscribers may now view abstracts on all items before purchasing full text. Please continue to send us your feedback at emailaddress.
AAPG Members: Your membership includes full access to the online archive of the AAPG Bulletin. Please login at Members Only. Access to full text from other collections requires a subscription or pay-per-view document purchase.
Welcome to the new Datapages Archives
Search Results > New Search > Revise Search
The AAPG/Datapages Combined Publications Database
Showing 43,723 Results. Searched 196,360 documents.
Easy Solutions to Stereonet Rotation Problems: GEOLOGIC NOTES
C. A. Bengtson
AAPG Bulletin
... the half-tangent method because a plane tangent to a unit stereographic reference sphere can be represented on a polar stereonet by the end point...
1983
Vector Constraints on Quaternary Deformation of the Western United States East and West of the San Andreas Fault
J. Bernard Minster, Thomas H. Jordan
Pacific Section SEPM
...>) are the corresponding angular velocity vectors of these two plates. The unit tangent vector to the path is t = dt/ds, and the total (conjugate) derivative...
1984
Problem of Secondary Tilt--Harker's Solution Corrected
Edmund M. Spieker
AAPG Bulletin
... to the tangent of the dip of the lower beds, in the direction of dip, thus making it a tangent vector. The simplest way of doing this is by means...
1938
Structural Analysis of the Boktukola Syncline, Central Ouachita Mountains, Oklahoma
Aaron Ball
Oklahoma City Geological Society
... Faults may have developed. Equal-area stereonets and Bengtson tangent diagrams were used to analyze bedding attitudes measured in the field...
2014
Abstract: Vector Attributes: An Approach Based on the Analysis of Normal Vector Field to Seismic Layering to Assist in Geological Interpretation; #90319 (2018)
Aicha Bounaim, Marie Etchebes, Jarle Haukaas, Hilde G. Borgos
Search and Discovery.com
...Abstract: Vector Attributes: An Approach Based on the Analysis of Normal Vector Field to Seismic Layering to Assist in Geological Interpretation...
2018
Fault Controlled Dolomitization of the Wabamun Group, Tangent Field, Peace River Arch, Alberta
F. Stoakes
CSPG Special Publications
...Fault Controlled Dolomitization of the Wabamun Group, Tangent Field, Peace River Arch, Alberta F. Stoakes 1987 73 85 Carbonates of the Upper...
1987
MaxG and MaxBHT Basin Temperature Modelling Using Bottom Hole Temperature Datasets
Ian Deighton, Erika Tibocha, Pete Dotsey
Unconventional Resources Technology Conference (URTEC)
... envelope of the BHT cloud for each major lithostratigraphic unit. If there is significant erosion in the basin, then the IGG used is adjusted...
2014
Entrapment of Petroleum Under Hydrodynamic Conditions
M. King Hubbert
AAPG Bulletin
..., and let the vector E, of unknown magnitude and direction, be the force per unit mass exerted upon the fluid by its environment. The work required...
1953
Non-opaque and Opaque Grain Fabrics of Siltstones in Red Peak Member (Triassic), Central Wyoming
M. Dane Picard, Douglas D. Beckmann
Journal of Sedimentary Research (SEPM)
..., p. 23). Any component that behaves as a single unit in relation to an applied force is a fabric element, specifically, a detrital fragment...
1966
Dimensional Grain Orientation Studies of Recent Coastal Sands
Joseph R. Curray
AAPG Bulletin
..., 1956). The system is briefly to consider an individual grain-orientation observation as a vector with direction and with unit magnitude. Because...
1956
Comparison of Percentage and Ratio Data in Facies Mapping
W. C. Krumbein
Journal of Sedimentary Research (SEPM)
.... For a given area and stratigraphic unit composed of sand and shale, for example, the control points and measured thicknesses are the same for either...
1957
Fracture Surface Extraction and Stress Field Estimation From Three-Dimensional Microseismic Data
Dylan Copeland, Alfred Lacazette
Unconventional Resources Technology Conference (URTEC)
... 𝑠𝑠 𝑥𝑥𝑥𝑥 𝑠𝑠 𝑦𝑦𝑦𝑦 𝐻𝐻 = � 𝑠𝑠 𝑧𝑧𝑧𝑧 𝑠𝑠 𝑥𝑥𝑥𝑥 𝑠𝑠 𝑦𝑦𝑦𝑦 𝑠𝑠 𝑧𝑧𝑧𝑧 (𝐻𝐻𝐻𝐻) ∙ 𝑣𝑣. The curvature in the direction of any unit vector v is given...
2015
Grain Orientation and Paleocurrent Systems in the Thorold and Grimsby Sandstones (Silurian), Ontario and New York
I. P. Martini
Journal of Sedimentary Research (SEPM)
... as the "direction ... of two parallel lines with the minimum amount of separation which can be drawn tangent to the grain direction" (Dapples and Rominger...
1971
Abstract: Regular Grids Travel Time Calculation A Practical Huygens Wavefront Expansion Approach; #90187 (2014)
Zhengsheng Yao, Mike Galbraith, and Randy Kolesar
Search and Discovery.com
...int A on wavefront. ( ) ( ( ) ⃗⃗) ( ⃗) (4) where, ⃗⃗ is a unit vector perpendicular to ray direction vector ⃗ . In the right side of equation (4), ...
2014
An Instrument for Measuring Planes and Vectors in Space: NOTES
G.C. Armstrong
Journal of Sedimentary Research (SEPM)
... the direction and inclination of a vector (fig 3). MEASURING OF PLANES 1. A Brunton compass, adjusted to read true north, is fixed to plate E by means of two...
1967
Structural and Stratigraphic Uses of Dip Profiles in Petroleum Exploration
C. A. Bengtson
AAPG Special Volumes
... than the well's dipmeter survey. Figure 10D is a polar tangent or "true vector" plot of the dipmeter data (Bengtson, 1980) that shows an east-west...
1982
The Three Elements of Structural Geology Part 5, #41849 (2016).
Terry Engelder,
Search and Discovery.com
...). The tangent vector, t, is defined to lie parallel to the dislocation line. The Burger's and tangent vectors are perpendicular for an edge...
2016
Fully 3-D Simulation of Diagnostic Fracture Injection Tests with Application in Depleted Reservoirs
Shuang Zheng, Ripudaman Manchanda, HanYi Wang, Mukul M. Sharma
Unconventional Resources Technology Conference (URTEC)
...-function model and uses the tangent line method to estimate closure stress (Nolte, 1979; Barree and Mukherjee, 1996). A G-function is calculated...
2019
A New Model of Inclinometer and its Application in Determination of Attitude of Foreset Planes: RESEARCH METHOD PAPER
Prabir Dasgupta
Journal of Sedimentary Research (SEPM)
... are uneven surfaces and can easily be divisible into a number of planar segments of different orientation. A cross-stratified unit may thus be intersected...
1995
Lower Tertiary Paleocurrent Trends, Santa Cruz Island, California: ABSTRACT
Walter R. Merschat
AAPG Bulletin
...(?)-Bulitian) age, approximately 1,400 ft of mainly shale and siltstone of Eocene (Penutian-Narizian) age, and a Narizian unit which consists...
1969
The Exploration Desk: Standardization of Stratigraphic Data
H. H. Suter
CSPG Bulletin
... tool to do this visual integration in the form of the Vector Diagram. The eye can easily integrate a number of vectors, if these are arranged...
1954
Some Dip Problems
D. Jerome Fisher
AAPG Bulletin
... the values thus obtained in feet (or the unit in which the contour interval is measured) at the mapping scale. The slope scale is simply a graphic...
1937
Abstract: Changes in Paleomagnetic, Rock Magnetic and Geochemical Properties in the Exshaw Formation: Evidence for Permeability Variations?; #90225 (2015)
M.T. Cioppa, I.S. Al-Aasm, M.R. Vernon, D.T.A. Symons, and J. Packard
Search and Discovery.com
... and geochemical properties of the lower black shale unit of the Mississippian-Devonian Exshaw Formation in the Tangent Field area of the Western Canada...
2015
Multiple Phase Fracture and Fault-Controlled Burial Dolomitization, Upper Devonian Wabamun Group, Alberta
Eric W. Mount Joy, Marjammanda K. Halim-Dihardja
Journal of Sedimentary Research (SEPM)
...-Dihardja 1991 Vol. 61 No. 4. (July), Recent data from the subsurface Tangent, Eaglesham and Normandville fields, located east of the Peace River Arch...
1991
A New Parallel Fold Construction Method from Borehole Dip for Structural Delineation; #41969 (2016)
Tetsushi Yamada, Isabelle Le Nir, Eric Moscardi, Arnaud Etchecopar
Search and Discovery.com
... when the data are from the same structure. The dip vector plot (Figure 1d) is also a recommended plot, which is drawn by creating unit vectors of dip...
2016