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The AAPG/Datapages Combined Publications Database
Showing 519 Results. Searched 200,691 documents.
Flow Transformations in Particulate Gravity Currents
Dave Waltham
Journal of Sedimentary Research (SEPM)
..., F0 = 2) because the velocity would go from zero at the flow base to 2 at the flow top. Other flow profiles (e.g., parabolic or logarithmic) have...
2004
New Techniques Improve Directional Drilling Performance in the Handil Field, Kalimantan
Djoko Minto
Indonesian Petroleum Association
...-parabolic and flatbottom profiles), it was concluded that the flatbottom profile is the most effective PDC bit in the Handil field for kick-off...
1989
REPLY TO COMMENT ON KATO et al. (2017) PALEOECOLOGY OF ECHINODERMS IN COLD SEEP ENVIRONMENTS REVEALED BY ISOTOPE ANALYSIS IN THE LATE CRETACEOUS WESTERN INTERIOR SEAWAY
MOE KATO, TATSUO OJI, KOTARO SHIRAI
PALAIOS
... relatively rich. Thus small number of arms that could not form a parabolic fan could not be a good reason for scarcity of food availability...
2018
The South Crawford Mountain Prospect, Rich County, Utah: A Case History
Valen D. Ott, Eric C. Potter, Kenneth R. Kreckel
Utah Geological Association
... parabolic reflectors that roughly corresponded to the known anticline at the surface. An alternate interpretation was that the reflectors were really...
1985
Predicting the Rate of Penetration in Percussive Drilling by Finite Elements Simulation; #42221 (2018)
Timo Saksala
Search and Discovery.com
... by a rate-dependent three-surface yield surface consisting of the Drucker-Prager criterion, Rankine criterion as a tensile cut-off, and a parabolic cap...
2018
Embedding Physical Flow Functions into Deep Learning Predictive Models for Improved Production Forecasting
Syamil Mohd Razak, Jodel Cornelio, Young Cho, Hui-Hai Liu, Ravimadhav Vaidya, Behnam Jafarpour
Unconventional Resources Technology Conference (URTEC)
... in very high dimensions by using subnetworks to calculate components of the backward stochastic differential equations for parabolic PDEs. Raissi et al...
2022
Eolian Environments their Characteristics Recognition and Importance
João José Bigarella
Special Publications of SEPM
... cm Inman Parabolic dunes in Denmark however of 350 750 and meters Hansen are at present they had a total movement during a period of about...
1972
ABSTRACT: Speculations on a glass half full: Burial, exhumation and gas saturation in coalbed methane reservoirs
Tim A. Moore
The Society for Organic Petrology (TSOP)
...) in the Surat Basin (Australia) provides an additional clue to undersaturation in CBM reservoirs. There is a well-documented parabolic trend (increasing...
2018
Grain-Size Distribution Using Log-Probability Plots: DISCUSSION
J. P. Syvitski, J. W. Murray
CSPG Bulletin
... where grains roll and slide in microtrajectories or jumps. The saltation here could not be that which produces dispersive stress due to parabolic...
1977
Identification of Point Bar Reservoirs Within Units of the Fall River Formation Through Comprehensive Electric Log Interpretation; Powder River Basin, Wyoming
Alvin L. Schultz, Walter W. Coppinger
Wyoming Geological Association
... and density-gamma ray) (Table 1) are plotted on such a chart. On this chart (Figure 4), the solid parabolic curves represent values for the Buckles number...
1989
Landward Migration of Barrier Island Sands Under Stable Sea Level Conditions: Plum Island, Massachusetts: REPLY
J. Richard Jones, Barry Cameron
Journal of Sedimentary Research (SEPM)
... November through March ... The dominant [dune] forms are parabolic, crescentic, and occasionally longitudinal dunes which are all oriented at right...
1979
Abstract: Outcrop analogue of Pre-salt microbial series from South Atlantic: the Yacoraite Fm, Salta rift system (NW Argentina); #90153 (2012)
Youri HAMON, Sébastien ROHAIS, Rémy DESCHAMPS, Marta GASPARRINI
Search and Discovery.com
... (smooth), with a parabolic morphology. Between the tubes or columns, an internal sediment (mainly oolitic grainstones to packstones) has been...
2012
Abstract: Pore-Geometric Controls on Single-Phase Darcy Permeability of Porous Media; #90187 (2014)
David C. Herrick
Search and Discovery.com
... of surface-wetting and viscous interaction of fluid molecules can be determined since they cause the flow-velocity profile to be parabolic. Integration...
2014
Early Grain-Coat Formation in Chaco Dune Field, New Mexico: Insight into Formation Mechanisms, Distribution, and Implications for Predictive Modeling to Assist in Deep Play Identification
W. L. Esch, J. M. Ajdukiewicz, and A. C. Reynolds
Search and Discovery.com
... that includes sand sheets, barchanoid dunes, parabolic dunes, ephemeral fluvial channels, and Cretaceous age bedrock. Consistent with literature, clay-coated...
Unknown
Novel application of focused ion beam electron microscopy (FIB-EM) in preparation and analysis of microfossil ultrastructures: A new view of complexity in early eukaryotic organisms
James D. Schiffbauer, Shuhai Xiao
PALAIOS
.... The shape of the ion beam is parabolic, and the wider upper portion of the beam can unevenly erode the platinum sacrificial layer above the uncut...
2009
Eolian Environment: Chapter 3
Edwin D. McKee, William C. Ward
AAPG Special Volumes
...-upward foreset structures distinctive of many parabolic-type dunes. This structure, common in Bermuda, has been discussed by MacKenzie (1964a, 1964b) who...
1983
Introduction to Eolian Deposits
Thomas S. Ahlbrandt, Steven G. Fryberger
AAPG Special Volumes
... stringers (an elongate sand sheet). Dunes with one slipface include barchan, barchanoid ridge, and transverse ridge dunes (Fig. 3A). Blowout and parabolic...
1982
RECOGNIZING TRACES OF SNAIL PREDATION ON THE CARIBBEAN SAND DOLLAR LEODIA SEXIESPERFORATA
TOBIAS B. GRUN
PALAIOS
... range from concave parabolic to sigmoidal. The collected tests reveal a drilling intensity of 59.5% with only three individuals (1.74%) featuring...
2017
Genetic Significance of Deformed Cross Bedding--With Examples from the Navajo and Weber Sandstones of Utah
T. W. Doe , R. H. Dott, Jr.
Journal of Sedimentary Research (SEPM)
... either at the depositional interface or after burial due to liquefaction of saturated sand. Excess pore pressure and liquefaction required for parabolic...
1980
Modern and Ancient Analogues for Complex Eolian Reservoirs; #51401 (2017)
Steven G. Fryberger, Caroline Y. Hern, Nick Jones
Search and Discovery.com
... Abstract Complex dunes, such as linear, star, reversing and parabolic, are common in modern depositional environments (Breed et al., 1979; Fryberger...
2017
Stratification Styles in Eolian Sandstones: Some Pennsylvanian to Jurassic Examples from the Western Interior U.S.A.
Ralph E. Hunter
Special Publications of SEPM
... b c Schematic maps showing relation of lee eddy winds to lee slope orientation d on barchanoid a parabolic longitudinal d dunes Based...
1981
Integrating transitional-flow signatures into hybrid event beds: implications for hybrid-flow evolution on a submarine lobe fringe
Piotr Łapcik, Jaco H. Baas
Journal of Sedimentary Research (SEPM)
... is sharp, frequently showing a variety of trace fossils and sole marks, including groove marks, skim marks, and spindly and parabolic flute marks...
2024
Chapter 4: Eolian Stratification
S. G. Fryberger
Rocky Mountain Section (SEPM)
... by vegetation, the parabolic dune, is common at Great Sand Dunes. Cross stratification in these dunes consists mainly of ripple strata on the arms...
1990
Effectiveness of dip-in DAS observations for low-frequency strain and microseismic analysis: The CanDiD experiment
David W. Eaton, Yuanyuan Ma, Chaoyi Wang, Kelly MacDougall
International Meeting for Applied Geoscience and Energy (IMAGE)
... to the start of the stage. Curved (parabolic) feature is discussed in the text. longitudinal strain along the fibre. Prior to further analysis, the data were...
2022
The Great Sand Dunes of Southern Colorado
Ross B. Johnson
Rocky Mountain Association of Geologists
... National Monument w e r e mapped according to the classification of Hack (1941, p. 240-245) a s t r a n s v e r s e , parabolic, and longitudinal dunes...
1968