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The AAPG/Datapages Combined Publications Database
Showing 23,894 Results. Searched 200,357 documents.
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
Organic Petrography and Geochemistry of Oil Shales, by A. Hutton; #90986 (1994).
Search and Discovery.com
1994
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: High-Resolution Seismic Exploration for Coal in Australia, by David W. King; #90962 (1978).
Search and Discovery.com
1978
Through the Seismic Looking Glass: Challenges of Using Reflections as Geomorphic Surfaces
Search and Discovery.com
N/A
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
Synsedimentary Extension and Iits Effect on Platform Carbonate Cycle Stacking: The Norian Dolomia Principale, the Dolomites, North Italy, by Robert Forkner and Linda A. Hinnov; #90052 (2006)
Search and Discovery.com
2006
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