Production of Subtidal Tubular and Surficial Tempestites by Hurricane Kate, Caicos Platform, British West Indies

Harold R. Wanless, Lenore P. Tedesco, Kenneth M. Tyrrell

Journal of Sedimentary Research (SEPM)

... observed protruding above the sediment surface and occurred as debris in the surficial storm layer. This indicates that the tapered tops of the burrow...

Island Arc Carbonates from the Silurian Heceta Formation of Southeastern Alaska (Alexander Terrane)

Constance M. Soja

Journal of Sedimentary Research (SEPM)

... debris flow deposits (Crevello and Schlager 1980; Eberli 1987; Hiscott and James 1985). Tapered flow margins are also associated with debris flows...

Middle Miocene Gypsum, Gulf of Suez: Marine or Nonmarine?

Osama E. Attia , Tim K. Lowenstein , Ashraf M.A. Wali

Journal of Sedimentary Research (SEPM)

... are tapered in the direction of crystal growth (Figs. 6, 8A, 8B). Their shapes in two dimensions may be trapezoidal, triangular, five-sided, horn...

Spherulites in Calcrete Laminar Crusts: Biogenic CACO3 Precipitation as a Major Contributor to Crust Formation

Eric P. Verrecchia , Pierre Freytet , Karin E. Verrecchia, Jean-Louis Dumont

Journal of Sedimentary Research (SEPM)

... to more than 100 µm in diameter, Table 1) are agglomerated in irregular clusters. Individual spherulites are composed of fibro-radial, tapered...

Sole Marks and Combined-flow Storm Event Beds in the Brixton Formation of the Siliciclastic Archean Witwatersrand Supergroup, South Africa

Nicolas J. Beukes

Journal of Sedimentary Research (SEPM)

.... This would explain the tapered form of the turnabout grooves in the Brixton Formation (Fig. 9A). The relative influence of the two low components at any...

Mudstone-Clastiform Conglomerates and Trough-Shaped Depressions from the Pennsylvanian Lower Port Hood Formation of Eastern Canada: Occurrences Due to Soft-Sediment Deformation

Dave G. Keighley , Ron K. Pickerill

Journal of Sedimentary Research (SEPM)

... the tapered, anvil-headed margins of some clasts (bottom left, thin arrows), which also may contain very thin necks due to merging sandstone-filled...

Petrography and Geochemistry of Floodplain Limestones from the Clarks Fork Basin, Wyoming, U.S.A.: Carbonate Deposition and Fossil Accumulation on a Paleocene-Eocene Floodplain

Gabriel J. Bowen,, Jonathan I. Bloch

Journal of Sedimentary Research (SEPM)

... and often are tapered and branched or crosscutting. Pore diameter commonly decreases at branch points (Fig. 5B), and the most common branching...

High-Resolution Seismic Stratigraphy of a Narrow, Bedrock-Controlled Estuary: The Guadiana Estuarine System, SW Iberia

F.J. Lobo, J.M.A. Dias, R. Gonzalez, F.J. Hernandez-Molina, J.A. Morales, V. Diaz Del Rio

Journal of Sedimentary Research (SEPM)

... faults (Fig. 8A) with vertical offsets of up to 5 m (Figs. 5, 7A). However, locally some faults are also tapered by SH 1 (Figs. 6B, 7A). Internally...

Sea-Level Variation During the Holocene Deduced from the Morphologic and Stratigraphic Evolution of Morgan Peninsula, Alabama, U.S.A.

Antonio B. Rodriguez, Craig T. Meyer

Journal of Sedimentary Research (SEPM)

... by applying a dewow high-pass filter, a tapered bandpass filter (70–140–280–420 MHz), and an automatic gain control (AGC). Average velocities of 0.06 m/ns...

The Identification and Interpretation of Reptile Ichnofossils in Paleosols Through Modern Studies

Daniel I. Hembree, Stephen T. Hasiotis

Journal of Sedimentary Research (SEPM)

..., nonbranching tunnels composed of sandstone and siltstone. D) Some of the burrow casts have asymmetrical, tapered terminations. E) Other burrow casts end...

Stratigraphy of Cibicides Carstensi Zone, Miocene of Louisiana

W. P. Leutze

AAPG Bulletin

... are not tapered anteriorly and the four costae are relatively thicker than those of N. angularis. Types: The holotype of N. angularis is represented...

Oil and Gas Developments in Western Canada in 1985

D. C. Robertson

AAPG Bulletin

... at Nipterk and Adlartok, while the Arctic Islands region had a major gas find at Cape Allison, as drilling activity tapered off by 6% during 1985...

Identification of Wrench Faults Using Subsurface Structural Data: Criteria and Pitfalls (1)

T. P. HARDING

AAPG Bulletin

..., 1986). In one subsurface example familiar to me, the fault zone consists of one to three adjacent, vertical to slightly tapered slices, each 0.3 to 1.25...

Testing Eustatic Curves Based on Baltimore Canyon Neogene Stratigraphy: An Example Application of Basin-Fill Simulation

Fred W. Schroeder, Stephen M. Greenlee

AAPG Bulletin

... effects were modeled assuming Airy isostasy. A consideration of flexural rigidity would result in comparable rates because the Neogene deposits are tapered...

Stratigraphic Setting of Transgressive Barrier-Island Reservoirs with an Example from the Triassic Halfway Formation, Wembley Field, Alberta, Canada

Andrew J. Willis , Thomas F. Moslow

AAPG Bulletin

...) edge of the sand body is more tapered and the sandstone interbedded with fine-grained backbarrier sediments. The thickness of the sandstone...

Pliocene to Recent Infilling and Subsidence of Intraslope Basins Offshore Louisiana

Lincoln F. Pratson, William B. F. Ryan

AAPG Bulletin

... the average of eight tapered spectra that were calculated for a 256 × 256 cell window, which was moved across the slope bathymetry at half-window...

Geology of the Ahuas Area in the Mosquitia Basin of Honduras: Preliminary Report

R. A. Mills , R. Barton

AAPG Bulletin

... and then tapered off to 23° at 4005 m, which was the last deviation survey (Figure 8). Several faults are indicated by either erratic or abrupt changes...

Structural evaluation of column-height controls at a toe-thrust discovery, deep-water Niger Delta

Olga V. Kostenko, Steve J. Naruk, Willem Hack, Manuel Poupon, Hans-Jurg Meyer, Miguel Mora-Glukstad, Charles Anowai, Margaret Mordi

AAPG Bulletin

... the strike of a doubly vergent anticline.Reversals in fold and thrust fault vergence in a critically tapered wedge reflect a very low coefficient of sliding...

Sponge-microbial mound facies in Mississippian Tuscumbia Limestone, Walker County, Alabama

David C. Kopaska-Merkel, Steven D. Mann, Jack C. Pashin

AAPG Bulletin

... the bottom of the core (Figure 6A) have irregular boundaries. The fractures form an en echelon set and are strongly tapered. These fractures are filled...

Characterization of the micropore systems in high-rank coal reservoirs of the southern Sichuan Basin, China

Changan Shan, Tingshan Zhang, Junjie Guo, Zhao Zhang, and Yang Yang

AAPG Bulletin

... are separated. Type B is semiclosed pores including cylinder cavities, parallel plane pores, wedge-shaped pores, and tapered hole, all of which are closed...

Sedimentology of the Joulters Cays Ooid Sand Shoal, Great Bahama Bank - Dissertation

P.M. (Mitch) Harris

Search and Discovery.com

... concentrated toward their base; as accretion deposits, with curved and tapered crossstrata dipping less than the angle of repose and without the doWn...

Facies Anatomy and Diagenesis of a Bahamian Ooid Shoal

P.M. (Mitch) Harris

Search and Discovery.com

... (2 3 0 ' ) with coarser particles concentrated toward their base; (2) accretion deposits, with curved and tapered cross-strata dipping less than...

Eolian-aquatic deposits and faunas of the middle Cambrian Potsdam Group

James W. Hagadorn, Joseph H. Collette, Edward S. Belt

PALAIOS

...) Inverse graded laminae from toeset in Rainbow Quarry, with tapered triangles adjacent to two of the coarsening-upward sequences. 322 PALAIOS...

Algal Mats, Cryptalgal Fabrics, and Structures, Hamelin Pool, Western Australia

Brian W. Logan , Paul Hoffman , Conrad D. Gebelein

AAPG Special Volumes

... have flattened to rounded tops and rounded shoulders, and the sides are slightly tapered toward the base. Many columns are asymmetric, having the bulk...

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