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The AAPG/Datapages Combined Publications Database

Showing 1,906 Results. Searched 200,621 documents.

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Small Scale Aeolian Bedforms

John M. Ellwood, Peter D. Evans, and Ian G. Wilson

Journal of Sedimentary Research (SEPM)

... is unimodal the high relief and asymmetry of profile indicate a relatively prominent coarse fraction in the tail. End_Page 557...

1975

The Orientation of Discoidal Clasts in Resedimented Conglomerates, Cambro-Ordovician, Gaspe, Eastern Quebec

Hugh E. Hendry

Journal of Sedimentary Research (SEPM)

... to rest, the "tail" of the FIG. 4. Orientation of c-axes of clasts plotted on Schmidt nets (equal area projection, lower hemisphere). The letters refer...

1976

Biogenic Sedimentary Structures Formed By Rays

James D. Howard, Taylor V. Mayou, Richard W. Heard

Journal of Sedimentary Research (SEPM)

... by the ray's tail. The marginal sand ridge is asymmetrical in cross section, being thickest at the margin of the feeding depression and sloping gently...

1977

Upper Cretaceous Carbonate Turbidites of the Alps and Apennines Deposited Below the Calcite Compensation Level

Mario Sagri

Journal of Sedimentary Research (SEPM)

... and was deposited by the low density tail of the turbidity-current cloud, whereas the upper part of the mud layer (f division of Hesse, 1975) lies...

1979

Grain-Size and Moment Measures: A New Look at Karl Pearson's Ideas on Distributions

Samuel D. Leroy

Journal of Sedimentary Research (SEPM)

... measures start interfering with each other. Hoadley (1968) and Muller and Vahl (1976) have treated single tail truncation rigorously. My own work requires...

1981

Size Distribution of Disaggregated Inorganic Suspended Sediment: Southern New Jersey Inner Continental Shelf

Joseph T. Kelley

Journal of Sedimentary Research (SEPM)

... in the fine tail of the particle size distribution. While electronic particle sizers produce an artificially truncated distribution (they generally do...

1981

Relationship Between Tracers And Background Beach Material

Neil E. Caldwell

Journal of Sedimentary Research (SEPM)

... particles which made up the extreme right-hand tail of the size-frequency curve in Figure 3, a fact which casts doubt on the representative nature...

1981

Tidal Sedimentation from a Fluvial to Estuarine Transition, Douglas Group, Missourian--Virgilian, Kansas

William P. Lanier , Howard R. Feldman , Allen W. Archer

Journal of Sedimentary Research (SEPM)

...), and tetrapod footprints with tail drag marks (Fig. 10A). The abundance of raindrop impressions and well defined tetrapod footprints indicate that bedding...

1993

Aspects of Seismic Resolution: Chapter 1

R. E. Sheriff

AAPG Special Volumes

... which leads this tangent wavefront by a quarter-wavelength (Figure 10a). The tail end of the reflection from the reflection point will be arriving...

1985

Chapter 29: Stratigraphic Architecture and Depositional Evolution of a Levee to Proximal Crevasse-splay to Channel-fill Succession: Units 13 and 14, Castle Creek North, Isaac Formation, Windermere Supergroup, British Columbia, Canada

R. W. C. Arnott

AAPG Special Volumes

..., distribution grading), but, upon inspection in thin section, are conspicuously coarse-tail graded (inset photomicrographs). In the field, beds consist...

2007

Chapter 87: Submarine Fans and Associated Sediments of the Tertiary Coastal Range of Guipúzcoa, Spain

Arthur van Vliet

AAPG Special Volumes

..., is of the coarse-tail type. The beds are interpreted as being emplaced by high-density turbidity currents that passed through a final stage of fluidized sediment...

2007

Chapter 10: Channel-levee Complexes of the Fossil Bluff Group, Antarctica

Peter J. Butterworth, David I. M. Macdonald

AAPG Special Volumes

...; average; sorting Very fine- to fine-grained sand with coarse-grained sand coarse-tail normal grading; average fine-grained sand; well sorted. Common...

2007

High-Resolution Rapid Elemental Analysis Using an XRF Microscanner: RESEARCH METHODS PAPERS

Toshitada Koshikawa, Yoshiki Kido, Ryuji Tada

Journal of Sedimentary Research (SEPM)

... Gaussian functions (e.g., Herglotz and Birks 1978). A low-energy tail and shelf are not significant for all the spectrum peaks measured by XGT. Therefore...

2003

Late Cretaceous Nappes in Oman Mountains and Their Geologic Evolution: DISCUSSION

H. Hugh Wilson

AAPG Bulletin

... the so-called "tail-end turbidite," or allodapic limestone in the case of limestone tu bidites. The reworking of cleaned nannofossils from older...

1973

Revaluation of Carbon-Isotope Compositions of Natural Methanes

D. J. Frank , J. R. Gormly , W. M. Sackett

AAPG Bulletin

..., the mass-44 tail under the 45 peak, and the mass-45 background. From replicate determinations the averag deviation, including both sample preparation...

1974

Effect of Fault-Related Granulation on Porosity and Permeability of Quartz Sandstones, Simpson Group (Ordovician), Oklahoma

Edward D. Pittman

AAPG Bulletin

... trap. Oil is trapped in multiple sandstones, which are juxtaposed to different sandstones across five "horse tail" faul s that branch from a main...

1981

Deposits of the sandy braided South Saskatchewan River: Implications for the use of modern analogs in reconstructing channel dimensions in reservoir characterization

Ian A. Lunt, Gregory H. Sambrook Smith, James L. Best, Philip J. Ashworth, Stuart N. Lane, Christopher J. Simpson

AAPG Bulletin

... in their lateral extent. Observations of the bed surface show that clay deposits are formed in sheltered low-velocity zones, such as bar tail areas...

2013

ABSTRACT Natural Fractures, Mechanical Properties, and In Situ Stress in the Planning and Execution of the Desert Peak EGS Experiment, #90128 (2011)

Nicholas C. Davatzes, Stephen H. Hickman

Search and Discovery.com

... fractures in the stimulation interval at 3000-3500 ft, with dip azimuth indicated by position of dots and dip angle by angle of the tail from horizontal...

2011

Abstract: Correlation of Sequences and the Global Eustasy Paradigm: A Review of Current Data; #90171 (2013)

Andrew D. Miall

Search and Discovery.com

... are shown at right. From Betzler et tail-wagging-dog circular reasoning of the Exxon school that al. (2000). Two additional sets of sequence should...

2013

Abstract: Depositional Continuum of Sand to Mud-Rich Basin-Floor Sandstones Associated with a Submerged Hydraulic Jump Downflow of an Avulsion Node, Upper Kaza Group, Neoproterozoic Windermere Supergroup, British Columbia, Canada; #90224 (2015)

Nataša Popović and Robert W. Arnott

Search and Discovery.com

.... Beds are structureless, massive or coarse-tail graded with grain size ranging from lower medium to lower coarse sand with abundant (25% up to >50...

2015

Abstract: Advanced Characterization of Cretaceous Carbonate Reservoirs in South Iraq Using Nuclear Magnetic Resonance Logs and Electrical Borehole Images; #91204 (2023)

Wassem Alward, Mohammed Al-Jubouri, Xu Xiaori, Ling Zongfa, Jin Rongrong, Cui Yi

Search and Discovery.com

...-Image composite pore-body spectrum (right). The “tail” corresponds to the larger pores extracted from image logs. Figure 4: Spectral porosity analysis...

2023

Abstract: Prospects Maturation of Unique Globigerina Limestone by Integration of Formation Evaluation and Pre-Stack Seismic Inversion Analysis; #91209 (2025)

Hendra Himawan, Indra Sumantri

Search and Discovery.com

... and un-invaded zones. The formation evaluation started with quality control (QC) of log data, which included log patching, removing tail, merging...

2025

Development of a Hydrofacies Framework for Dual-Domain Transport Modeling

Mary K. Harris, Margaret R. Millings and Gregory P. Flach

Search and Discovery.com

... (unitles ss) 0.9 Single-domain w/ effective θ 0.8 0.7 0.6 0.5 Dual-domain 0.4 0.3 Heavy tail y 0.2 Early arrival 0.1 0 0 1 2 3 4 5 6 time...

Unknown

The Intrinsic Effect of Shape on Retrogradation Motif and Timing of Drowning: An Example from a Frasnian Carbonate Pinnacle Reef System, Bugle Gap, Canning Basin, Western Australia, #30096 (2009)

Erwin W. Adams, and Claude-Alain Hasler

Search and Discovery.com

... and Laidlaw Range outcrops Tail of Laidlaw Range No. 1 Glenister Knolls No. 2 •Limestone ranges represent exhumed platforms and valleys coincide with basinal...

2009

Seismic Technologies for Unconventional Reservoir Characterization: Wamsutter Field Case Study; #110159 (2011)

Rosemarie Geetan, Brian Hornby, Ricko Wardhana

Search and Discovery.com

... locations and eliminate the tail? Simpler more integrated seismic workflows • • • Increased bandwidth with additional lows Spatial resolution improved...

2011

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