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The AAPG/Datapages Combined Publications Database

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

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Dispersal Patterns of Sands in Grays Harbor Estuary, Washington

K. F. Scheidegger , J. B. Phipps

Journal of Sedimentary Research (SEPM)

... estuaries (Meade, 1969), (4) the distinctive mineral assemblages of fluvial as compared with marine sources (Kulm and Byrne, 1967), and (5) the textural...

1976

The Role of Drilling Predation in Isolated, Nutrient-Poor Ecosystems: First Insights from RAPA Nui, Polynesia

Julieta C. Martinelli, Sandra Gordillo, M. Carla De Aranzamendi, Marcelo M. Rivadeneira

PALAIOS

...), a time when new predators and prey were evolving in marine communities (Vermeij 1977). The drilling frequencies from our findings are more like...

2023

Abstracts: Synthetic Microseismic Files; #90173 (2015)

J. Wong, P. M. Manning, L. Han, and J. B. Bancroft

Search and Discovery.com

... the dominant frequencies in the synthetic seismograms to be 300 Hz or less. These are low compared to frequencies exceeding 500 Hz commonly observed...

2015

Continental Shelf Sediments Off the West Coast of Florida

Howard R. Gould , Robert H. Stewart

Journal of Sedimentary Research (SEPM)

... by rivers entering the Gulf, which suggests that the ,sediments were derived from these sources. The five outer zones, combined, have an average width of 100...

1953

Proposed Model for Cenozoic Sedimentary History of Bering Sea: ABSTRACT

D. M. Hopkins, C. H. Nelson, D. W. Scholl

AAPG Bulletin

... and Holocene times. Basin-filling was dominated by continental sedimentation in the early Tertiary and by marine deposition in the later Tertiary...

1972

Holocene Transgressive Stratigraphy and Sediment Dispersal, Eastern Shore, Nova Scotia: ABSTRACT

R. K. Hall, R. Boyd

AAPG Bulletin

... topography. Evolution of barrier systems follows a 500-1,000 year cyclic sequence of: (1) generation from marine erosion of glacial deposits, (2...

1985

Recognition of cyclicity in the petrophysical properties of a Maastrichtian pelagic chalk oil field reservoir from the Danish North Sea

Morten Stage

AAPG Bulletin

... consistent cycles at approximately 2 m wavelength, as well as additional frequencies where the relative dominance of the different frequencies differs...

2001

Low Frequency Shadow Zone Analysis Based on CWT Spectral Decomposition: Case Study of South Sumatra Basin

Abdul Haris, I Nengah Suabdi, Erwinsyah, Adriansyah, Abdullah Nurhasan, Ahsanul Khair, Ian A. Kainama

Indonesian Petroleum Association

... of high-frequency energy in the reservoir is predicted as the main factor affecting the low frequency anomaly, which shifts the dominant frequency...

2008

Application of high-resolution reflection seismology to eastern Kansas cyclothems

Ralph W. Knapp

Kansas Geological Society

...-frequency data with dominant frequencies of 250 Hz or greater and upper frequency limits of 500 Hz or greater. This band width tunes to the general...

1989

Cycles in Lake Beds of the Triassic Sanford Sub-Basin of North Carolina

Lisa N. HU, Daniel A. Textoris

Special Publications of SEPM

...=fine- and coarse-grained lithic fragments). Groce No. I well. mica schists and fine-grained mica phyllites are the dominant rock fragments...

1996

Biogeographic Units as Biostratigraphic Units

James W. Valentine

AAPG Bulletin

... and nomenclature of biotic provinces in biostratigraphy. Recent marine provinces are regions of fairly uniform climatic regimes, within which communities maintain...

1963

Palynology of the Lowland Seberang Prai and Kuala Kurau Areas North -West Peninsular Malaysia

Kamaludin Bin Hassan

Geological Society of Malaysia (GSM)

.... Pollen types from other ecological sources are present in very low frequencies : Pinus, Quercus, Arecaceae, Pandanus, Compnosperma, Macaranga...

1989

3-D Surface-Wave Estimation and Separation Using an Iterative Closed-Loop Approach; #41898 (2016)

Tomohide Ishiyama, Gerrit Blacquiere

Search and Discovery.com

... ([email protected]) Delft University of Technology, Delft, Netherlands 2 Abstract Surface waves in seismic data are often dominant and mask...

2016

Mineralogy of Recent Sediments of Tigris and Euphrates Rivers and Some of the Older Detrital Deposits

George Philip

Journal of Sedimentary Research (SEPM)

... mineral species in about the same relative frequencies, characterized by an abundance of iron ores, epidotes, amphiboles and pyroxenes that make more than...

1968

ABSTRACT: SPECTRAL DECOMPOSITION ANALYSIS, SOUTHWEST SOLDADO FIELD, TRINIDAD & TOBAGO

Sierra, J., Landa, A., Cova, C, Cardinez S., Dharpaul, T. and YoungOn, V.

Geological Society of Trinidad & Tobago

..., based on the dominant frequency of the seismic data. Nevertheless, there still being much information that remains hided in others frequencies...

2007

ABSTRACT: Seismic modeling of Upper Cretaceous coal-bearing strata east of Drumheller, Alberta, Canada: implications for CBM exploration; #90007 (2002)

Willem Langenberg, Fran Hein, Sarah Richardson, Don Lawton, Rudi Meyer

Search and Discovery.com

... with dominant frequencies of approximately 100 Hz, whereas the more closely-spaced inclined beds require higher frequencies, approximately 150 Hz...

2002

Abstract: Spectral Decomposition Applications; #90211 (2015)

Satinder Chopra, John Castagna, and Vladimir Alexeev

Search and Discovery.com

... that are based on the dominant frequency in the seismic data. Spectral decomposition allows int erpreters to ut ilize the discr ete components of the se...

2015

Intense Naticid Drilling Predation on Turritelline Gastropods from Below the K-T Boundary at Rajahmundry, India.

Sumanta Mallick, Subhendu Bardhan, Shubhabrata Paul, Subham Mukherjee, Shiladri S. Das

PALAIOS

... that although predation frequencies vary widely through space and time (Dudley and Vermeij, 1978), the Cretaceous level is believed to be lower than...

2013

Glacio-Eustatic Origin of Permo-Carboniferous Stratigraphic Cycles: Evidence from the Southern Cordilleran Foreland Region

William R. Dickinson, Gerilyn S. Soreghan, Katherine A. Giles

Special Publications of SEPM

... four other types of processes might involve frequencies and amplitudes suitable for sequences of stacked cyclothems and correlative all-marine cycles...

1996

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