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The AAPG/Datapages Combined Publications Database

Showing 23,894 Results. Searched 200,357 documents.

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Sediment Dispersal Pattern Off an Eroding Delta on the West Coast of Taiwan

James T. Liu, Ray T. Hsu, Jeong-Shang Huang, Shenn-Yu Chao

Special Publications of SEPM

... direction is the prevailing means of sediment reworking, its degree of influence is less than those of the sources and the dominant longshore sediment...

2003

Intricate Seismic Time-Frequency Analysis in Kujung Patch Reef, Northeast Java Basin

Haryono Haryanto, Erik Yogapurana, Aditya Kusuma

Indonesian Petroleum Association

... to identify the reservoir response caused by gas and water zones. seismic trace can produce various time-frequencies ranging from low to high frequency...

2016

Three-Dimensional Distribution of Lithofacies, Bounding Surfaces, Porosity, and Permeability in a Fluvial Sandstone--Gypsy Sandstone of Northern Oklahoma

J. D. Doyle , M. L. Sweet

AAPG Bulletin

... sandstone is an informal name for the lower part of the Vamoosa Formation that includes the Gypsy and approximately 11 m (35 ft) of overlying marine...

1995

Abstracts: S-wave Attenuation within the Weathering Layer of an Alberta Heavy Oil Field; #90173 (2015)

Kristof De Meersman

Search and Discovery.com

... and continuously emitting mini-vibrator sources. The sources and receivers were installed at typical depths of 80 m and 12 m respectively...

2015

Comparison of Western Facies of Thermopolis, Muddy, and Mowry Formations with Other Areas of the Early Cretaceous Seaway, Northern Rocky Mountains and Great Plains Region: ABSTRACT

Susan Vuke

AAPG Bulletin

... of southwestern Montana). Eastward progradation of marginal marine environments continued on the western side of the seaway despite the sea's second advance...

1983

ABSTRACT Marine Processes in the Northern Lobe of Mahakam Delta and Marangkayu Spit Bar: Implication on Paleogeography Model in the Subsurface, #90103 (2010)

Andang Bachtiar, Armein Sulaiman

Search and Discovery.com

...ABSTRACT Marine Processes in the Northern Lobe of Mahakam Delta and Marangkayu Spit Bar: Implication on Paleogeography Model in the Subsurface...

2010

Vertical and Lateral Seismic Resolution and Attenuation: Part 7. Geophysical Methods

R. E. Sheriff

AAPG Special Volumes

... shape. Thus, shallow reflections often have dominant frequencies around 60 Hz, whereas 15 to 20 Hz is usually the dominant frequency for deep...

1992

Depositional History of Carboniferous (Middle Visean) Limestones from Bristol and Parts of South Wales

W. C. MacQuown, Jr. , T. W. Bloxam

AAPG Bulletin

... be subdivided into informal lithologic units with dominant microfacies that reflect both minor cyclic deposition and the effect of terrigenous influx toward...

1972

Grain-Size Components As Markers of Origin and Depositional Processes In the Coastal Zone of the Golfe Du Lion (Mediterranean Sea, France)

J. Paul Barusseau, Raphaël Braud

Journal of Sedimentary Research (SEPM)

..., between those two morpho-bathymetric levels, seaward fining is associated with reorganization of size frequencies. On the outer bar, a dominant negative...

2014

The Radiation and Dispersal of Agnatha in Early Devonian Time

D. L. Dineley

CSPG Special Publications

... in shallow marine waters the agnatha were equatorially widespread. They entered brackish and freshwater environments in late Silurian and Devonian times...

1988

Structural Development at the West-Central Margin of the Malay Basin

Liew Kit Kong

Geological Society of Malaysia (GSM)

... that is straddled by a number of half grabens. The oldest drilled Tertiary sediments onlap onto this margin and comprise ?Oligocene non-marine sands...

1994

Abstract: Estimating the Spectra of Small Events for the Purpose of Evaluating Microseismic Detection Threshholds; #90174 (2014)

N. Ackerley

Search and Discovery.com

...ff of the spectra at high frequencies. It is important to note that this model is particular to the strike-slip mechanism which is dominant in tecton...

2014

Deposition of Fourth-Order, Post-Rift Sequences and Sequence Sets, Lower Cretaceous (Lower Valanginian to Lower Aptian), Pletmos Basin, Southern Offshore, South Africa: Chapter 3: Recent Applications of Siliciclastic Sequence Stratigraphy

G. J. Brink, J. H. G. Keenan

AAPG Special Volumes

...-------- An interplay among eustatic cycles of at least three frequencies, low tectonic-subsidence rates, and high sediment-supply rates is inferred...

1993

Seismic Exploration for Stratigraphic Traps: Geophysical Exploration Methods

Paul L. Lyons, M. B. Dobrin

AAPG Special Volumes

... this chart when just the dominant visual frequencies are examined. Figure 6 is a similar chart, based on a first-power attenuation law (linear...

1972

Plio-Pleistocene stratigraphy, paleoenvironments, and sea-level history at Florida Shell Quarry, Charlotte County, Florida, U.S.A.

Lucas D. Gomes, Sierra V. Petersen, Roger W. Portell, Peter E. Riemersma

Journal of Sedimentary Research (SEPM)

... to sources of freshwater. The thin, semi-indurated sand and shell bed (RB1) contains a mixed brackish-marine molluscan fauna which may reflect increased...

2025

Applications of Shallow High-Resolution Seismic Reflection to Environmental Problems

Richard D. Miller, William E. Doll, Carlene Merey, William E. Black

Environmental Geosciences (DEG)

...-processing flow to enhance high frequencies and very early (time) arrivals. Reflection surveys designed to image targets deeper than 300 m generally...

1994

Post-migration seismic data conditioning through merged datasets: Enhancing accuracy and insight

Pamela Blanco Dufau, Heather Bedle, Kurt Marfurt

International Meeting for Applied Geoscience and Energy (IMAGE)

... spectrum becomes flatter without dominant frequencies (orange line), with reduced amplitudes at specific values and noticeable improvements above 40 Hz...

2024

A Statistical Approach to Source Determination of Lithic and Fe Oxide Grains: An Example from the Alpha Ridge, Arctic Ocean

Dennis A. Darby, Jens F. Bischof

Journal of Sedimentary Research (SEPM)

... sources contributed IRD in any one-centimeter interval. Despite the fluctuations in sources, the dominant sources for Fe oxide grains coincide...

1996

Theory and Applications of Time Series Analysis to Wireline Logs: Chapter 5

John H. Doveton

AAPG Special Volumes

... clastic sources to the northwest and marine carbonate transgressions from the southeast. Three alternative periodograms of the gamma-ray log (Figure...

1994

Magnetotelluric Investigation of the Pleistocene Nueces River Incised Valley, Mustang Island, Texas

Egon T. Weber, Richard Hay, James R. Garrison, Jr.

GCAGS Transactions

... a measurement of the electrical impedance tensor of a subsurface volume. Higher frequencies represent a shallower integrated volume. Thus, by measuring...

2007

Model for Sandstone-Carbonate "Cyclothems" Based on Upper Member of Morgan Formation (Middle Pennsylvanian) of Northern Utah and Colorado

Steven G. Driese , R. H. Dott, Jr.

AAPG Bulletin

... the presence of 2 kinds of repetitive, regressive-dominant, shoaling-upward vertical sequences. The carbonate sequence consists of, from bottom...

1984

Evaluating the ichnofossil Teredolites as an indicator of salinity and paleoenvironment

R. C. C. Buntin, S.T. Hasiotis, and P. P. Flaig

PALAIOS

... association with respect to occurrence frequency is shown in the Online Supplemental File. Greatest frequencies of Teredolites occur in open-marine...

2022

Tracing Transcontinental Sand Transport: from Anatolia–zagros To the Rub' Al Khali Sand Sea

Eduardo Garzanti, Pieter Vermeesch, Khalid Abdulsamad Al-Ramadan, Sergio AndÒ, Mara Limonta, Martin Rittner, Giovanni Vezzoli

Journal of Sedimentary Research (SEPM)

...-Gulf foreland basin via the Euphrates–Tigris–Karun fluvial system and other rivers draining the Zagros, and blown inland by dominant Shamal winds...

2017

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