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The AAPG/Datapages Combined Publications Database
Showing 1,740 Results. Searched 201,044 documents.
Helical crustacean burrows: Gyrolithes ichnofabrics from the Pliocene of Lepe (Huelva, SW Spain)
Fernando Muñiz, Zain Belaústegui
PALAIOS
...) microbial farming; (6) exploitation of food resources; (7) providing pore-water exchange; (8) symmetric or asymmetric producers (unequal handedness); (9...
2019
Late Albian Blackleaf and Thermopolis-Muddy Sequence in Southwestern Montana and Correlation with Time-Equivalent Strata in West-Central Montana
T.S. Dyman, K.W. Porter, R.G. Tysdal, W.A. Cobban, J.D. Obradovich
Montana Geological Society
... deposits from tens to hundreds of feet in length. The megaripples are symmetric and have wave-lengths exceeding one foot (0.3 m...
2000
Stratigraphy of the Fluvial-To-Marine Transition Zone Associated With A Forced-Regressive Compound Incised-Valley System In the Turonian Ferron Notom Delta, Utah, U.S.A.
Benjamin H. Richards, Janok P. Bhattacharya
Journal of Sedimentary Research (SEPM)
... 14-1. C) Bioturbation in lower shoreface at section 13-7. D) Thin, symmetric wave-rippled very fine-grained sandstone in prodelta at section 13-7...
2018
Assessing Intra-Bar Variations in Grain Roughness Using Close-Range Photogrammetry
Jane Groom, Stéphane Bertin, Heide Friedrich
Journal of Sedimentary Research (SEPM)
...). Stereo-matching was completed on the rectified images using Gimel'farb's (2002) symmetric dynamic programming stereo algorithm (SDPS) to produce point...
2018
Acoustic Properties of Sediment on the Southern Tonga Platform as Determined from Seismic Sonobuoy Studies
Jonathan R. Childs
Circum Pacific Council Publications
.... In this representation, the source is stationary and the sonobuoy position is varia ble. In practice the reverse is true, but the two cases are symmetric...
1985
Sedimentation of the Pico Formation in the Ventura Quadrangle, California
Lon D. Cartwright, Jr.
AAPG Bulletin
... detritus and later picked it up and shifted it elsewhere. Symmetric and asymmetric ripple marks, formed by waves and currents, are of common occurrence...
1928
On the Formation of the Vitiaz Trench Lineament and North Fiji Basin
Thomas M. Brocher
Circum Pacific Council Publications
...). The western end of the trough is 800 m shallower, more symmetric and narrow, and more deformed than the eastern end (Figures 11 and 1 2 ) , Sediments...
1985
Paleoecological implications of large-sized wild boar tracks recorded during the Last Interglacial (MIS 5) at Huelva (SW Spain)
Carlos Neto De Carvalho, Fernando Muñiz, Zain Belaústegui, João Belo, Paula Gómez, Antonio Toscano, Mário Cachão, Pedro P. Cunha, Francisco Ruiz, Luis Miguel Cáceres, Joaquín Rodriguez-Vidal, Geraldine Finlayson, Stewart Finlayson, Francisco Giles Guzman, Clive Finlayson
PALAIOS
..., paraxonic, and sub-symmetrical tracks that are longer than wide, with a general trapezoidal shape; digits III and IV symmetric, with rounded...
2020
Lithofacies and Depositional Environments of the Ivishak Formation, Prudhoe Bay Field
Timothy F. Lawton, Gregory W. Geehan, Brent J. Voorhees
Pacific Section SEPM
... in lower to middle part of Zone 2. Shale types associated with the fluvial deposits are Note expected difference in shape of braided (symmetric) and shown...
1987
Integrating Experiments with Subtidal Death Assemblages to Unveil the Predatory Habits of Muricid Gastropods from the Southeastern Pacific
J. C. Martinelli, C. S. Ruz, A. Pérez-Matus, M. M. Rivadeneira
PALAIOS
..., the chemical secretions help dissolve the prey’s shell and create the circular, symmetric drill hole characteristic of this interaction. Because...
2022
Fracture Systems of the Austin Chalk, North-Central Texas
Edward W. Collins, Susan D. Hovorka, Stephen E. Laubach
Rocky Mountain Association of Geologists
... monoclines face southeast. Folds distant from exposed faults are isolated symmetric to asymmetric, doubly plunging culminations that resemble folds near...
1992
Lithology Controls Ammonoid Size Distributions
Kenneth De Baets, Emilia Jarochowska, Stella Zora Buchwald, Christian Klug, Dieter Korn
PALAIOS
... by smaller specimens), the black limestone sample was symmetric and the marl sample was skewed to the right side (predominance of larger specimens...
2022
Interaction of Biological and Geological Processes in the Beach And Nearshore Environments, Northern Padre Island, Texas
Gary W. Hill, Ralph E. Hunter
Special Publications of SEPM
... on the seaward side of the inner trough Symmetric shore parallel large wave ripples and longshore onshore winds scour on a the backshore facing wind...
1987
A Sequence Stratigraphic Overview of Sandy and Gravelly Lacustrine Deltas Deposited Along the Eastern Margin of Late Pleistocene Lake Bonneville, Northern Utah and Southern Idaho
Mark R. Milligan, David R. Lemons
Utah Geological Association
..., localized symmetric wave ripples, soft sediment deformation, and freshwater gastropods (Lymnaea and Amnicola). The bottomsets have a sheet geometry (>10 m...
1998
Laboratory Evaluation of a Real-Time Coaxial Cable Casing Imager for Wellbore Integrity Monitoring
Yurong Li, Runar Nygaard, Baokai Cheng, Wenge Zhu, Hai Xiao
Unconventional Resources Technology Conference (URTEC)
... not be realistic. Since the pipe is only 5 foot long and a single point load is applied at the center, symmetric but variant bending angles along...
2016
The adsorption of Direct Brown 1 dye using kaolinite and surfactant modified kaolinite
Mark Jeeva, Sivarama Krishna Lakkaboyana, Wan Zuhairi W.Y.
Geological Society of Malaysia (GSM)
... on the kaolinite, symmetric and asymmetric stretching vibrations of C-C bonding in the alkyl chain. At a higher surface coverage, adsorbed HDTMA...
2019
Down-Hole Reservoir Raman System: A Novel New Technology for the Rapid Appraisal of Shale Gas Resource Potential
L. Taras Bryndzia, Neil R. Braunsdorf, Ronny Hofmann, Quentin Morgan, Peter Christian, Art Toews, Jeff Parkins, Grant Myers, John Pope
Unconventional Resources Technology Conference (URTEC)
.... These ethane bands correspond to the symmetric stretch and deformation vibrations of CH3 groups. Background spectra were also acquired of flowback...
2016
Adsorption and Capillary Condensation in Heterogeneous Nanoporous Shales
Yixin Ma, Jin-Hong Chen, Ahmad Jamili
Unconventional Resources Technology Conference (URTEC)
...) composition distribution of equal molar C1/C2 binary mixture an 8-nm pore at 350 K and 10 MPa. Only half of the symmetric pore is shown. Adsorption...
2016
Trace Fossil Assemblages in Middle Triassic Marginal Marine Deposits, Eastern Border of the Massif Central, France
Georges R. Demathieu
Special Publications of SEPM
... symmetric asymmetric ripple marks mud cracks and salt crystal casts Mud crack casts and salt crystal casts can occur as convex epireliefs on the upper...
1984
Physical Models for Inter-Well Interference in Shale Reservoirs: Relative Impacts of Fracture Hits and Matrix Permeability
Wei Yu, Kan Wu, Lihua Zuo, Xiaosi Tan, Ruud Weijermars
Unconventional Resources Technology Conference (URTEC)
... is presented in Figure A-3. The others remain the same as these three segments due to the symmetric fracture geometry. URTeC 2457663 Figure A-2...
2016
A Submarine Fan - Distal Molasse Sequence of Middle Precambrian Age, Belcher Islands, Hudson Bay
B.D. Ricketts
CSPG Bulletin
..., was predominantly toward the southeast (Fig. 8). Symmetric sedimentary structures such as groove casts and parting lineations support this conclusion...
1981
Classic Geology and Reservoir Characterization Studies of Central Utah; Road Logs
Thomas H. Morris, Craig D. Morgan, Marc T. Eckels, Scott M. Ritter, Renee Mauche Faatz
Utah Geological Association
... factor is 40% to 50%. The Covenant trap is an elongate, symmetric, northeast-trending anticline, with nearly 800 feet (240 m) of structural closure...
2007
Tidal Sand Flat Deposits in Lower Cretaceous Dakota Group Near Denver, Colorado
David B. MacKenzie
Rocky Mountain Association of Geologists
... a c e i n the lower part. E i t h e low amplitude symmetric ripples orr straie of some sortt are also presentt s y m m e t r i c ripples o s t r a i e...
1972
Fault Seal Integrity in the Timor Sea Area: Prediction of Trap Failure Using Well-Constrained Stress Tensors and Fault Surfaces Interpreted from 3D Seismic
D. A. Castillo, D. J. Bishop, M. de Ruig
Indonesian Petroleum Association
... in these study wells were relatively symmetric with breakout widths ranging from 40° to 70°. The breakout width describes the angular coverage...
2002
Neogene Deformation of East Kalimantan: A Regional Perspective
Duncan Witts, Lorin Davies, Robert J. Morley, Lester Anderson
Indonesian Petroleum Association
... thickening of the folded sedimentary section, or a change in structural regime. Many of the folds are thrust related, and occur as both symmetric...
2015