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The AAPG/Datapages Combined Publications Database

Showing 1,906 Results. Searched 200,616 documents.

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Facies and Architectural Asymmetry in a Conglomerate-Rich Submarine Channel Fill, Cerro Toro Formation, Sierra Del Toro, Magallanes Basin, Chile

Zane R. Jobe, Anne Bernhardt, Donald R. Lowe

Journal of Sedimentary Research (SEPM)

... deposition and complex temporal and/or spatial (head to tail) changes in rheology are likely (Fisher 1983; Sohn et al. 2002). A synonymous term...

2010

Regional Review of the Nova Scotian Outer Margin

Dorrick A. V. Stow

Atlantic Geology

... the shelf break, but many head in waters greater than 400 m in depth, and -mostly die out on the rise. The southwest part of this margin has gentler...

1978

Sponge Spicules, Silicification, and Sequence Stratigraphy

Fritz Neuweiler, Stéphanie Larmagnat, John Molson, Francis Fortin-Morin

Journal of Sedimentary Research (SEPM)

... model (10−5 to 10−3 m/y; Holzbecher 2002) and assigning a reference fixed head (pressure) along the top, to represent the sea floor (Fig. 3). No-flow...

2014

Quantitative Analysis of Submarine-Flow Deposit Shape In the Marnoso-Arenacea Formation: What Is the Signature of Hindered Settling From Dense Near-Bed Layers?

Giuseppe Malgesini, Peter J. Talling, Andrew J. Hogg, Dominic Armitage, Alex Goater, Fabrizio Felletti

Journal of Sedimentary Research (SEPM)

.... Assuming a speed of ∼ 1.6 m/s, this 50 minute duration would imply that the depositional part of the flow was ∼ 3 km in length, from its head to tail...

2015

Stratigraphy and Sedimentary Petrology of the Upper Jurassic Mariposa Formation, Western Sierra Nevada, California

Nicholas L. Bogen

Pacific Section SEPM

... beds are internally structureless, but features such as coarse-tail grading of granules and coarse sand, distribution grading, laminated T. intervals...

1984

Influence of Seabed Morphology and Substrate Composition On Mass-Transport Flow Processes and Pathways: Insights From the Magdalena Fan, Offshore Colombia

Andrea Ortiz-Karpf, David M. Hodgson, Christopher A.-L. Jackson, William. D. McCaffrey

Journal of Sedimentary Research (SEPM)

...) and is associated with aligned megaclasts (Fig. 9). Erosion could have been caused by the bypassing head of the flow, and the megaclasts could have been deposited...

2017

Planform Recognition and Implications of a Cretaceous-age Continental-scale River Avulsion Node in the Western Interior Basin, Alberta, Canada

Harrison K. Martin,, Stephen M. Hubbard, Cynthia A. Hagstrom, Sean C. Horner, Paul R. Durkin

Journal of Sedimentary Research (SEPM)

... characteristics, including erosional truncation at the head of the bar and parallel accretion sets at the bar tail, demonstrate that paleoflow was also northward...

2019

Neoichnology of Tropical and Arid Scorpions: Environmental Impacts on Burrow Construction and Form

Skyler K. Houser, Daniel I. Hembree

PALAIOS

... body can be divided into three regions, the cephalothorax (head), mesosoma (body), and metasoma (tail) (Hjelle 1990) (Fig. 1A). The cephalothorax...

2024

Origin of the Peripheral Rim, Redwater Reef, Alberta

Grant D. Mossop

CSPG Bulletin

... at the head of each projection. (Location SWDW #1, 3315). C. Steep-walled stylolite. Note that a minor stylolitic contact is truncated by the steep...

1972

Occurrences of Oil and Gas in Association with the Paleo-Shelfbreak

William C. Krueger Jr., F. K. North

Special Publications of SEPM

... and the shallow shelf on the southwest The association of the fields with the fluctuating tiary the tween paleo shelfedge tail Daniel has been studied...

1983

Dinosaur Footprints from the Dakota Group of Eastern Colorado

Martin G. Lockley

Rocky Mountain Association of Geologists

...), may be better than the former method, which, coupled with Alexander's41 rule of thumb, apparently leads to underestimates of size. My estimate of head...

1987

Late Cretaceous, Paleocene, and Early Eocene Paleogeography of the Bighorn Basin and Northwestern Wyoming

David Seeland

Wyoming Geological Association

... summation each crossbed azimuth is assigned a unit length, and these vectors are added "tail to head". The resultant is the vector mean, and its length...

1998

Shale Grit and Grindslow Shales: Transition from Turbidite to Shallow Water Sediments in the Upper Carboniferous of Northern England

Roger G. Walker

Journal of Sedimentary Research (SEPM)

... reference square no. SK 143914) and at Alport Head (SK 109955 and 105955).< P> The area studied in detail (figs. 1 and 3) lies FOOTNOTE 2. Present...

1966

Eolian Sand Control

Richard C. Kerr, John O. Nigra

AAPG Bulletin

... to the head of the windward face of the dune, thereby causing migration down-wind; however, since deposition occurs on the slip-face and since sand is carried...

1952

Diagenetic Fabrics of Aragonite, Calcite, and Dolomite in an Ancient Peritidal-Spelean Environment: Triassic Calcare Rosso, Lombardia, Italy

Riccardo Assereto , Robert L. Folk

Journal of Sedimentary Research (SEPM)

...-surfaced but a few show lumpy protuberances like a deformed head of broccoli. Crystal terminations are quadratic to feathery (Fig. 14c); rays themselves...

1980

Carbonate Debris Sheets and Turbidites, Exuma Sound, Bahamas

Paul D. Crevello , Wolfgang Schlager

Journal of Sedimentary Research (SEPM)

... and Oldershaw, 1979). Grain Flow.--In a very few isolated cases visually estimated coarse-tail grading occurs in the rubble, a type of grading that Middleton...

1980

Compositional Analysis of Lithologies from Wireline Logs: Chapter 3

John H. Doveton

AAPG Special Volumes

... tossing. The optimal prediction is 0.5 head/0.5 tail. This result never occurs, so the prediction is always wrong. However, the average squared error...

1994

Introduction to Offshore Geologic Hazards: Section 1: PART 2

Arnold H. Bouma

AAPG Special Volumes

... above. In constructive bedform areas, one may find boulders around which some erosion has taken place, and some may form a tail on the lee side...

1981

Characteristics of Sediments on Modern and Ancient Continental Slopes

Harry E. Cook, Michael E. Field, James V. Gardner

AAPG Special Volumes

...), showing canyon head axes (c on top photograph), subsidiary gullies, and large slumped areas. From Belderson and Stride (1969) and reprinted...

1982

Classification of Offshore Mass Movements

Thierry Mulder ,, Pierre Cochonat

Journal of Sedimentary Research (SEPM)

... are sorted: large boulders are usually concentrated at the head and on the lateral part of the flo body (Johnson 1970, 1984). Sorting can be linked...

1996

Modeling Carbonate Microfacies in the Context of High-Frequency Dynamic Relative Sea-Level and Environmental Changes

Guy H. Spence , Maurice E. Tucker

Journal of Sedimentary Research (SEPM)

... suggests that carbonate successions can be characterized by a series of individual relays arranged stratigraphically head-to-tail at the scale of systems...

1999

Seismogenic Deformation Structures in Microbialites and Mudstones, Silurian Lockport Dolomite, Northwestern Ohio, U.S.A.

Charles F. Kahle

Journal of Sedimentary Research (SEPM)

... fault, southeast Turkey: Tectonophysics, v. 98, p. T7-T14. HISCOTT, R.N., AND JAMES, N.P., 1985, Carbonate debris flows, Cow Head Group, western...

2002

Upper Oligocene to Lowermost Miocene Strata of King George Island, South Shetland Islands, Antarctica: Stratigraphy, Facies Analysis, and Implications for the Glacial History of the Antarctic Peninsula

Alexa L. Troedson,James B. Riding

Journal of Sedimentary Research (SEPM)

... Miocene (Stover et al. 1996). However, rare Bitectatodinium tepikiense also occurs in samples from the Low Head Member of the Polonez Cove Formation...

2002

Chapter 121: Channel-levee Complexes of the Fossil Bluff Group, Alexander Island, Antarctica

Peter J. Butterworth, David I. M. Macdonald

AAPG Special Volumes

... by pebbly sandstone and conglomerate facies, Himalia Ridge. Immediately above the hammer head are stratified, poorly sorted, medium- to coarse-grained...

2007

Marine Isotope Stage 6 Canyon and Spillover Deposits of the Bryant and Eastern Canyon Systems, Northwest Gulf of Mexico: Importance of Fine-Grained Turbidites on a Delta-Fed Prograding Slope

Efthymios K. Tripsanas, William R. Bryant, Niall C. Slowey, Jin Wook Kim

Journal of Sedimentary Research (SEPM)

... turbidity currents were of a waning nature, characterized by structural characteristics similar to those of typical surge-like turbidity currents: head...

2006

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