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The AAPG/Datapages Combined Publications Database

Showing 6,629 Results. Searched 200,673 documents.

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Ascending

Paleo-Ballantyne Strait of the Sverdrup Basin - Late Paleozoic and Early Mesozoic Gateway to Alaska, #50369 (2010)

Ashton Embry, Tom Brent,

Search and Discovery.com

... the Amerasia Basin at right angles. Restoration of northern Alaska and adjacent northeast Russia against the Canadian margin by clockwise rotation results...

2010

Stress Analysis of the Casper Mountain — Emigrant Gap Anticline Juncture, Natrona County, Wyoming

William C. Beck, Arthur E. Burford

Wyoming Geological Association

... to horizontal shows markedly more distinct groupings of maxima after rotation and suggests the following sequence of stress fields. The initial sigma...

1985

Measurement and Analysis of Fractures in Core

John C. Lorenz, Robin E. Hill

Rocky Mountain Association of Geologists

...Measurement and Analysis of Fractures in Core John C. Lorenz, Robin E. Hill Geological Studies Relevant to Horizontal Drilling: Examples from...

1992

Paleomagnetic Study of La Quinta Formation, Venezuela

R. B. Hargraves , R. Shagam

AAPG Bulletin

.... However, this correlation between the average vectors becomes worse if the beds are rotated to a horizontal position. The relative rotation needed...

1969

Drilling Induced Petal Fractures in Coal Core: A Simple Method of Using These Features in Conjunction with Bore-Wall Breakout to Determine the Angular Relationship between Cleat and Maximum Horizontal Stress as Well as Cleat Azimuth in Vertical Drill-Holes

David Titheridge

Petroleum Exploration Society of Australia (PESA)

... (PP) Effective stress (σV) = WOB-PP Effective stress (σH,h) = TS + LSIWOB-PP Effective stress and components of horizontal stress Eastern...

2012

AAPG Archie Series, No. 1, Chapter 6: Petrophysical Properties of Thinly Bedded Formations

Q. R. Passey, K. E. Dahlberg, K. B. Sullivan, H. Yin, R. A. Brackett, Y. H. Xiao, and A. G. Guzmán-Garcia

AAPG Special Volumes

..., and a single horizontal semi-axis length, bh. We can define the aspect ratio, α, of such an ellipsoid as the ratio of the vertical to the horizontal semi...

2006

Problem of Secondary Tilt--Harker's Solution Corrected

Edmund M. Spieker

AAPG Bulletin

.... Draw AD^prime and turn off the angle AD^primeC^prime equal to the amount of rotation (dip of the upper beds). Draw OC^prime, which, according to Harker...

1938

ABSTRACT: The Importance of Bedding Orientation When Looking for Fractures; #90108 (2010)

Charles R. Berg and Andrew Newson

Search and Discovery.com

... by rotation. In polar plots, most fractures will concentrate at the perimeter of the plot, to within 20 degrees of perpendicular, and will be most...

2010

Transtensional Analogue Modelling Applied to the Perth Basin, Western Australia

L. B. Harris, R. I. Higgins, M. C. Dentith, M. F. Middleton

Petroleum Exploration Society of Australia (PESA)

... the maximum principal stress was horizontal, not incorporated in this experiment, or rigid block rotation forming curved faults along which some layers...

1994

A look back at the Great Alaska Earthquake of March 27, 1964 - Abstract

George Plafker

Alaska Geological Society

... that circum-Pacific arcs represented major strike-slip zones related to counterclockwise rotation of the Pacific Ocean basin. These arguments were based...

2003

Insights into the mechanisms of fault-related folding provided by volumetric structural restorations using spatially varying mechanical constraints

Chris A. Guzofski, Joachim P. Mueller, John H. Shaw, Pierre Muron, Donald A. Medwedeff, Frank Bilotti, Carlos Rivero

AAPG Bulletin

... established forward models. In particular, our restoration results imply that detachment folds may grow with significant components of both limb rotation...

2009

Folding Mechanisms in a Fault-propagation Fold Inferred from the Analysis of Unconformity Angles: The Sant Llorenc Growth Structure (Pyrenees, Spain)

J. L. Alonso, F. Colombo, O. Riba

AAPG Special Volumes

... are hinge migration plus rotation (limited activity axial surfaces of Poblet et al., 1997) (Figure 11b) or shearing along the horizontal limb (Erslev...

2011

Development, Testing and Field Case Histories of a Sealed Junction Multilateral Well Completion System

J. R. Longbottom, Dana Dale, Kevin Waddell, John Roberts

Indonesian Petroleum Association

... material. The fixture was placed on a horizontal stand which allowed its rotation. A hydraulic ram assembly provided the push/pull force, and hydraulic...

1996

Age and Tectonics of Plutonic Belts in Accreted Terranes of the Klamath Mountains, California and Oregon

William P. Irwin

Circum Pacific Council Publications

... Triassic or E a r l y Jurassic t i m e and that virtually all rotation o f the K l a m a t h terrane h a d ceased by Early C r e t a c e o u s t i m e...

1985

Has the Eastern End of the Uinta Mountains Been Bent?: Paleomagnetic and Fault Kinematic Assessment

J. M. Ashby, J. W. Geissman, A. B. Weil

Utah Geological Association

... to test the hypothesis that the easternmost Uinta Mountains, northwest Colorado and northeast Utah, experienced clockwise sense rotation in response...

2005

Successful Strategies for Cost Reduction in Plug and Ball Seat Milling Operations

Don McClatchie, Jake Kardash, Lyndsey Thomas, Kevin, Lypkie

Unconventional Resources Technology Conference (URTEC)

... before circulation could resume. This method continued to be successful with the advent of horizontal wells since pipe rotation and the turbulence...

2015

Basic Wrench Tectonics

Ronald E. Wilcox , T. P. Harding , D. R. Seely

AAPG Bulletin

... between structural elements in wrench zones. MECHANICS OF WRENCHING Wrench faults form in response to horizontal shear couples within the earth's...

1973

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