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Showing 1,906 Results. Searched 201,051 documents.
Chapter 13: The Zama Discovery in Salina del Istmo Basin, Offshore Tabasco: “A New Dawn” for Offshore Mexico Exploration
David Kosmitis, John Parker, Michael Albertson, Alex Obvintsev, David Tett, James Pasley, Matthew Carr
AAPG Special Volumes
... operations were performed, and fluid samples were successfully delivered to the surface. After the deeper exploration tail of Zama-1SON was evaluated...
2021
Distribution and Nature of Fault Architecture in a Layered Sandstone and Shale Sequence: An Example from the Moab Fault, Utah
N. C. Davatzes, A. Aydin
AAPG Special Volumes
... in the literature as secondary fractures, horsetail fractures, pinnate fractures, kink fractures, bridge fractures, and tail fractures (Segall and Pollard, 1980...
2005
A Comparison of Holocene with Pleistocene Interglacial Periods Similarities and Differences
Douglas Carlson
GCAGS Transactions
...’s heads or tail. Figure 4. Methane concentrations throughout interglacial periods as defined in Table 1. Methane concentrations are from analysis...
2018
Sample Examination
R. G. Swanson
AAPG Special Volumes
... have "swallow-tail" twins. Anhydrite can be readily recognized in thin sections by its pseudo-cubic cleavage, and, under polarized light, by its...
1981
Petrology and Regional Significance of a Devonian Carbonate/Evaporite Complex, Eastern Michigan Basin
J. A. Fagerstrom
Journal of Sedimentary Research (SEPM)
... by the common "swallow-tail" appearance of some of the intersecting molds and calcite pseudomorphs (Fig. 2A, B). Grains, pseudospar, and cement...
1983
Stratigraphy of Comanchean Cretaceous Trinity Group
James Morris Forgotson, Jr.
AAPG Bulletin
... consists mainly of brown, gray, dark gray, and black shale interbedded with dense, gray limestone. Calcareous, black, splintery shales and "ring-tail...
1957
The Influence of Explosive Volcanism on Fluvial Sedimentation: The Deschutes Formation (Neogene) in Central Oregon
Gary A. Smith
Journal of Sedimentary Research (SEPM)
...). End_Page 618------------------------ coarse-tail variety. Hyperconcentrated flood-flow deposits are typically 1 to 10 m thick and are represented...
1987
Paleozoic Section in Arrow Canyon Range, Clark County, Nevada
R. L. Langenheim, Jr. , B. W. Carss , J. B. Kennerly , V. A. McCutcheon , R. H. Waines
AAPG Bulletin
... half of the formation, are less numerous in the upper half. Both the basal and upper contacts of the Arrow Canyon Formation are gradational in d tail...
1962
Holocene Meander-Belt Evolution in an Active Extensional Basin, Southwestern Montana
Jan Alexander , John S. Bridge , Michael R. Leeder , Richard E.LL. Collier , Robert L. Gawthorpe
Journal of Sedimentary Research (SEPM)
... the sands represent either the early stages of channel filling or point-bar-tail deposits. The details of the sand and gravel sequences are discussed...
1994
Stratigraphy and Genesis of a Modern Shoreface-Attached Sand Ridge, Peahala Ridge, New Jersey
John W. Snedden , Roderick W. Tillman , Ronald D. Kreisa , William J. Schweller , Stephen J. Culver , Robert D. Winn, Jr.
Journal of Sedimentary Research (SEPM)
... poorly sorted versus the moderately to moderately well-sorted upper ridge sands (Fig. 7). Lower ridge sands also display coarse-tail grading. The organic...
1994
Successions of Late Cenozoic Platform Dolomites Distinguished by Texture, Geochemistry, and Crystal Chemistry: Niue, South Pacific
C.W. Wheeler, P. Aharon, R.E. Ferrell
Journal of Sedimentary Research (SEPM)
... dolomites indicates that variations in 18O values were not caused by changes in pore-fluid salinity. B) The high-Sr tail among CNM dolomites is attributed...
1999
Architecture and Trace-Fossil Characteristics of A 10,000-20,000 Year, Fluvial-to-Marine Sequence, Seebro Basin, Spain
Erling I. Heintz Siggerud , Ronald J. Steel
Journal of Sedimentary Research (SEPM)
... (and its seaward tail of shelf deposits) is mappable, and deduced to have been time-equivalent with the backfill of fine-grained coastal floodbasin...
1999
Sublacustrine-Fan Deposition in the Oligocene Creede Formation, Colorado, U.S.A.
Daniel Larsen , Gary A. Smith
Journal of Sedimentary Research (SEPM)
... exposure (W:H > 57). It is a massive, coarse-tail-normal graded debris-flow bed, 1.5-4.5 m thick, that grades upward into a 0.5-2.7 m thick sequence...
1999
The Lacustrine Carbon Cycle as Illuminated by the Waters and Sediments of Two Hydrologically Distinct Headwater Lakes in North-Central Minnesota, U.S.A.
Walter E. Dean , Antje Schwalb
Journal of Sedimentary Research (SEPM)
... personal communication) and is informally referred to as "raccoon-tail banding." Carbon Isotope Results Values of 13C of bulk CaCO3 (Fig. 7; Schwalb...
2002
Chapter 137: Eocene Deep-water Channel-levee Deposits, Nicaragua: Channel Geometries and Internal Deformation Patterns of Six Outcrops
Imke Struss, Christian Brandes, Peter M. Blisniuk, Jutta Winsemann
AAPG Special Volumes
... or normally graded conglomerates, and amalgamated, massive or graded-stratified, normally graded or normally coarse-tail graded, pebbly sandstones of FA 1...
2007
Paleoproterozoic Stark Formation, Athapuscow Basin, Northwest Canada: Record of Cratonic-Scale Salinity Crisis
Michael C. Pope, John P. Grotzinger
Journal of Sedimentary Research (SEPM)
...) cubic casts and molds of halite, (2) "pagoda" halite pseudomorphs, (3) silicified sheets of cubic minerals, and (4) small, "swallow-tail" shaped...
2003
Hydraulic-Jump and Hyperconcentrated-Flow Deposits of a Glacigenic Subaqueous Fan: Oak Ridges Moraine, Southern Ontario, Canada
H.A.J. Russell, R.W.C. Arnott
Journal of Sedimentary Research (SEPM)
... cross-sets are generally coarser than planar cross-sets, are coarse-tail graded, and form cosets 30-50 cm thick. At one location, climbing cross-sets...
2003
Cyclonic Brine-Flow Pattern Recorded by Oriented Gypsum Crystals in the Badenian Evaporite Basin of the Northern Carpathian Foredeep
Maciej Babel, Anna Becker
Journal of Sedimentary Research (SEPM)
...: composed of vertically arranged large gypsum crystals (up to 3.5 m) commonly joined in pairs resembling twins of the "swallow-tail" type; deposited...
2006
Anatomy and Evolution of a Slope Channel-Complex Set (Neoproterozoic Isaac Formation, Windermere Supergroup, Southern Canadian Cordillera): Implications for Reservoir Characterization
Ernesto Schwarz, R. William C. Arnott
Journal of Sedimentary Research (SEPM)
... in turbidity currents: Geological Society of America, Bulletin, v. 82, p. 1477–1488. Leclair, S.F., and Arnott, R.W.C., 2003, Coarse tail-graded, structureless...
2007
Evolution of Turbidity Currents Deduced from Extensive Thin Turbidites: Marnoso Arenacea Formation (Miocene), Italian Apennines
Peter J. Talling, Lawrence A. Amy, Russell B. Wynn, Graham Blackbourn, Oliver Gibson
Journal of Sedimentary Research (SEPM)
... might be expected to occur from the slower-moving tail of the flow. This suggests that turbulence intensity declined rapidly over time at the rear...
2007
Sedimentology of Acid Saline Lakes in Southern Western Australia: Newly Described Processes and Products of an Extreme Environment
Kathleen C. Benison, Brenda Beitler Bowen, Francisca E. Oboh-Ikuenobe, Elliot A. Jagniecki, Deidre A. LaClair, Stacy L. Story, Melanie R. Mormile, Bo-Young Hong
Journal of Sedimentary Research (SEPM)
..., with individual crystals enlarging as they grow upward (Fig. 7I). Twinned "swallow-tail" crystals are common (Fig. 7I). We have observed gypsum crystal...
2007
Thrust Faults and Back Thrusts in Madison Range of Southwestern Montana Foreland
Russell G. Tysdal
AAPG Bulletin
... the north and south ends of the Carrot Basin fault tail off into soil-covered slopes, eastward flattening of the fault into a bedding-plane detachment...
1986
Thermal and Tectonic History of Selected Taranaki Basin (New Zealand) Wells Assessed by Apatite Fission Track Analysis (1)
PETER J. J. KAMP and PAUL F. GREEN
AAPG Bulletin
...), with a tail to old ages. In sample 8694-10, all but one of the grains counted have fission track ages significantly less than the stratigraphic age...
1990
Textural and Compositional Variability Across Littoral Segments of Lake Tanganyika: The Effect of Asymmetric Basin Structure on Sedimentation in Large Rift Lakes
Michael J. Soreghan , Andrew S. Cohen
AAPG Bulletin
... grainstone because it consists of well-washed, coarse- to medium-grained carbonate and clastic sand (Table 1) with a significant coarse tail...
1996
Geometric and seismic interpretation of the Perdido fold belt: Northwestern deep-water Gulf of Mexico
Rion H. Camerlo, Edward F. Benson
AAPG Bulletin
... of fold 2 into the western edge of the low-reflectivity zones seen in Figure 4 to be a migration tail in the 3-D poststack time-migrated data. Three...
2006