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Showing 1,739 Results. Searched 200,619 documents.
1.3 Igneous Structures: The Little Murray Ridge
R. S. White
AAPG Special Volumes
... symmetric cross section of the ridge with a slope of 8o on both flanks. The sediment cap is probably formed by a lithified carbonate bank or by a reef...
1983
3.4 Detached Sediments: 3.4.2 Decollement Tectonics (B-Subduction) and Active Margins: OBC 5-A: Overthrusting in a Deep-Water Carbonate Terrane
J. A. Austin, Jr.
AAPG Special Volumes
... dips toward the island margin. However, a broad, symmetric fold (fold #1) almost 20 km (12.4 mi) across begins to disrupt the basin stratigraphy...
1983
Statistical Analysis of Turbidite Cycles in Submarine Fan Successions: Tests for Short-Term Persistence
Chengsheng Chen, Richard N. Hiscott
Journal of Sedimentary Research (SEPM)
... and/or very thin beds; 9 displays a symmetric pattern; 10 a stepwise pattern; and 11 a grouped pattern of thin and thick beds. Packets 12 through 16 were...
1999
Determination of Paleocurrent Direction from Oblique Sections of Trough Cross-Stratification--A Precise Approach: RESEARCH METHODS PAPER
Prabir Dasgupta
Journal of Sedimentary Research (SEPM)
... by the symmetric trace of the bounding surface. Z;prZ; is the trace of the axial plane and YY is the trace of the basal (xy) plane on this section. B...
2002
Chapter 91: Slope-channel Complex Fill and Overbank Architecture, Tinker Channel, Kirkgecit Formation, Turkey
Bryan T. Cronin, Hasan Çelik, Andrew Hurst, Murat Gul, Kemal Gürbüz, Adriano Mazzini, Michael Overstolz
AAPG Special Volumes
..., and mudstones. Each fill element is confined within an erosive surface, which is broadly symmetric about its own axis. The fill elements are separated by finer...
2007
Chapter 3: Introduction: Atlas of Deep-water Outcrops
Roger D. Shew, Gary S. Steffens, Joseph R. J. Studlick
AAPG Special Volumes
... resolvable on seismic; seismic loops may be symmetric or skewed. 5. Occurrence: Basin plain and inner to outer fan, but the midfan lobe is most common...
2007
Influence of Clast Axial Ratio on Macrofabric Strength in Periglacial Colluvium
Susan W.S. Millar, Frederick E. Nelson
Journal of Sedimentary Research (SEPM)
... et al. (1987, Chapter 3), eigenvalues and eigenvectors were extracted from the symmetric 3 3 "orientation matrix" T formed by the sums of squares...
2003
Age Dating of Muscovites from Pennsylvanian Sandstones near Wamego, Kansas: GEOLOGICAL NOTES
D. G. Brookins , J. D. Voss
AAPG Bulletin
...) illite is more abundant and its peaks more symmetric in the sheet sandstone than in the channel sandstone. In addition, chlorite is generally...
1970
Pendulum Effect and Niger Delta Prolific Belt: GEOLOGIC NOTES
Gerard C. Dailly
AAPG Bulletin
... which blows along the axis of the Niger River and creates two symmetric longshore currents (Allen, 1965). However, two reentrants are present...
1976
Internal Kinematics of Salt Diapirs: REPLY
C. J. Talbot , M. P. A. Jackson
AAPG Bulletin
... are ideally symmetric about a vertical axis. In nature, the tendency for asymmetry or tilting is even greater than in the laboratory because of lateral...
1989
Generation and Migration of Petroleum from Abnormally Pressured Fluid Compartments: Discussion (1)
JOZSEF TOTH, M. D. MACCAGNO, C. J. OTTO, and B. J. ROSTRON
AAPG Bulletin
... within hardened rock zones. (5) The typical position of hardened rock zones is approximately central in topographically symmetric basins (intermontane...
1991
Emplacement and evolution of the Mahogany salt body, central Louisiana outer shelf, northern Gulf of Mexico
Mark G. Rowan, Robert A. Ratliff, Bruce D. Trudgill, Jaime Barceló Duarte
AAPG Bulletin
...), and symmetric, bulb-shaped salt stocks, in which salt spreads radially from vertical feeders (Figure 3b) (Rowan, 1997). In both cases, lateral salt...
2001
Factors controlling porosity in Upper CarboniferousLower Permian carbonate strata of the Barents Sea
S. N. Ehrenberg
AAPG Bulletin
... dolostones have higher average porosity with symmetric distribution (few samples 5% porosity). The low limestone porosities result from cementation...
2004
Salt tectonics driven by sediment progradation: Part IIRadial spreading of sedimentary lobes prograding above salt
V. Gaullier, B. C. Vendeville
AAPG Bulletin
... extension and the lack of available source layer force diapirs to fall. In our model, the ridges started to subside rapidly and became symmetric...
2005
Multiple thrust detachments and their implications for hydrocarbon accumulation in the northeastern Sichuan Basin, southwestern China
Chuanxin Li, Dengfa He, Guo Lu, Kai Wen, Abijah Simon, and Yanpeng Sun
AAPG Bulletin
... The thrust belt in the NESB is composed of a series of subparallel tight, nearly symmetric anticlines and gentle synclines (Figure 1; Sichuan Bureau...
2021
Abstract: A Ray+Waveform Inversion for the Potency Tensor; #90187 (2014)
Scott Leaney and Chris Chapman
Search and Discovery.com
...van Gelder, B.H.W. and Soler, T., 2007, On covariance propagation of eigenparameters of symmetric n-D tensors, Geophys. J. Int., 170, 503-510. Heaton, T.H...
2014
Surface Microseismic Monitoring of Hydraulic Fracture Stimulations, Bakken Formation, Nesson
David Abbott, Sherilyn Williams-Stroud, RonShaffer
Search and Discovery.com
... – Red 1000 feet @ 55 degrees 42X-36 Symmetric N/S Zone with half-length of 250 feet Events are sized by relative amplitude 44X-36 500 feet @ 130...
2009
Opening of the North Atlantic and Norwegian - Greenland Sea Basin - Lessons from the South Atlantic; #30190 (2011)
Chris Parry
Search and Discovery.com
... symmetric spreading model can be used to explain the opening of the Norwegian – Greenland Sea. NW-SE trending, coast-perpendicular fracture zones...
2011
The Identification and Implication of Injectites in the Shwe Gas Field, Offshore Northwestern Myanmar; #20225 (2013)
Stephen Cossey, Dongil (David) Kim, Su-Yeong Yang, and Ho Young Jung
Search and Discovery.com
... distribution - Dominant Ta facies, lack of Tb/Tc facies - Symmetric distribution within injectite - Normally turbidite shows fining upward trend G3.2 G5.2 14...
2013
Evaluating Hydrocarbon Migration Paths Using Fault Displacement Distributions, #41234 (2013)
Pablo Giampaoli,
Search and Discovery.com
... over the deep and shallow segments along the main faults. Single fault throw profiles are symmetric with greater values at its center and zero...
2013
Displacement Length Linkage Model Applied to Footwalls Traps: Examples from the Eastern Llanos Basin of Colombia, #10568 (2014)
Oscar Lopez-Gamundi, Diana P. Carrascal, Andrea Pablos
Search and Discovery.com
... or there is no seismic cover. Conclusions 1. Examples of simple, complete or incomplete, symmetric (unimodal) D-L relationship plots or profiles...
2014
Fourier Analysis of the Laminated Facies of the Middle Bakken Member, Sanish-Parshall Field, Mountrail County, North Dakota, #50996 (2014).
Virginia A. Gent, Stephen A. Sonnenberg
Search and Discovery.com
... system. LAMINATION THICKNESS - cm FOCUSED DATA SET INITIAL TIME PERIOD Bartleson 44-1H periodogram - first 327 laminations Non-symmetric sequence...
2014
Sedimentological Criteria for Distinguishing Stacked Dune-trough Muds from Muds in Inclined Heterolithic Strata in the Subsurface Insights from McMurray Formation Outcrops and Modern Analogues; #51023 (2014)
Milovan Fustic, Robert Dalrymple, Rudy Strobl, Bryce Jablonski, Eirik Vik, Allard Martinius
Search and Discovery.com
...) with the corresponding tidal-rhymite deposit (right). In this simplified symmetric tide example, three individual mud layers (black) are formed during the slack water...
2014
Structural Geology Observations Derived From Full Tensor Gravity Gradiometry Over Rift Systems, #41784 (2016).
Desmond FitzGerald, Horst Holstein
Search and Discovery.com
... zx g zy g zz g yy g yz Theory: • G is symmetric, • trace(G)=0 5 independent quantities Properties of the gradient tensor • Classic principal...
2016
The Three Elements of Structural Geology Part 8, #41849 (2016).
Engelder,
Search and Discovery.com
... zone at the tip of the fault is symmetric with respect to the fault • Within this zone, all points on a ray which goes through the tip line...
2016