The Mossoró Sandstone, Canto do Amaro Oil Field, Late Cretaceous of the Potiguar Basin, Brazil: An Example of a Tidal Inlet-Channel Reservoir

1993 ◽  
pp. 183-199
Author(s):  
Eduardo Bagnoli
Keyword(s):  
Late Cretaceous ◽  
Tidal Inlet ◽  
Oil Field ◽  
Inlet Channel ◽  
Potiguar Basin

Taphonomic Redistribution of Mollusk Shells in a Tidal Inlet Channel, Sapelo Island, Georgia

Palaios ◽  
1986 ◽  
Vol 1 (1) ◽  
pp. 3 ◽  
Author(s):  
Stephen W. Henderson ◽  
Robert W. Frey
Keyword(s):  
Tidal Inlet ◽  
Inlet Channel ◽  
Mollusk Shells ◽  
Sapelo Island

scholarly journals NUMERICAL MODEL INVESTIGATION OF SELECTED TIDAL INLET-BAY SYSTEM CHARACTERISTICS

1978 ◽  
Vol 1 (16) ◽  
pp. 76
Author(s):  
William N. Seelig ◽  
Robert M. Sorensen
Keyword(s):  
Sediment Transport ◽  
Numerical Model ◽  
Transport Model ◽  
Tidal Inlet ◽  
Inlet Channel ◽  
Astronomical Tide ◽  
Order Of Magnitude ◽  
Flow And Sediment Transport ◽  
Transport Factors ◽  
System Characteristics

A spatially integrated one-dimensional numerical model of inlet bay hydraulics has been combined with a simple sediment transport model to investigate selected tidal inlet-bay system characteristics. A parametric study has been performed using the models to determine the effect of various factors on the net direction and order of magnitude of inlet channel flow and sediment transport. Factors considered include astronomical tide type, storm surge height and duration, variation in bay surface area, time-dependent channel friction factor, and the addition of a second inlet connecting the bay and sea.

Development of subaqueous barchanoid-shaped dunes due to lateral grain size variability in a tidal inlet channel of the Danish Wadden Sea

2005 ◽  
Vol 110 (F4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Verner B. Ernstsen ◽  
Riko Noormets ◽  
Christian Winter ◽  
Dierk Hebbeln ◽  
Alex Bartholomä ◽  
...  
Keyword(s):  
Grain Size ◽  
Wadden Sea ◽  
Tidal Inlet ◽  
Inlet Channel ◽  
Size Variability

scholarly journals Late Cretaceous ostracods from the central area of the Potiguar Basin, Northeastern Brazil

2020 ◽  
Vol 23 (2) ◽  
pp. 81-89
Author(s):  
Enelise Katia Piovesan ◽  
Gérson Fauth ◽  
Cristianini Trescastro Bergue
Keyword(s):  
Late Cretaceous ◽  
Central Area ◽  
Northeastern Brazil ◽  
Potiguar Basin

A new species of Petalobrissus Lambert 1916 (Echinoidea: Faujasiidae) from the Jandaíra Formation, Potiguar Basin (Brazil)

Zootaxa ◽  
2018 ◽  
Vol 4422 (4) ◽  
pp. 581
Author(s):  
JESSIKA ALVES ◽  
FELIPE A. C. MONTEIRO ◽  
HELENA MATTHEWS-CASCON ◽  
RODRIGO JOHNSSON ◽  
ELIZABETH G. NEVES
Keyword(s):  
New Species ◽  
Late Cretaceous ◽  
Rio Grande ◽  
Identification Key ◽  
Key To Species ◽  
Potiguar Basin ◽  
A New Species

A new Late Cretaceous species of Petalobrissus, Petalobrissus lehugueurae sp. nov., is described from the Jandaíra Formation, Potiguar Basin, state of Rio Grande do Norte. To date, this genus comprises a total of 20 species, only two of which, Petalobrissus setifensis and Petalobrissus cubensis have so far been recorded from the Jandaíra Formation. Petalobrissus lehugeurae sp. nov. is distinguished from its congeners in that gonopores occupy only a small portion of the genital plates, in having a slit-like periproct and a unique abrupt depression of the test that forms a pronounced keel below the periproct. In addition, an identification key to species of Petalobrissus is presented. 

scholarly journals REDUCTION OF MAINTENANCE BY PROPER ORIENTATION OF SHIP CHANNELS THROUGH TIDAL INLETS

2000 ◽  
Vol 1 (2) ◽  
pp. 22
Author(s):  
W. Armstrong Price
Keyword(s):  
Tidal Inlet ◽  
Tidal Inlets ◽  
Inlet Channel ◽  
Engineering Studies ◽  
Strong Current ◽  
Channel Outlet ◽  
Maintenance Dredging ◽  
Set Up ◽  
Inland Water Bodies ◽  
Current Engineering

The inherited courses of some hay-port ship channels take them through tidal inlets along courses running across dominant directions of strong current movement and scour, or on courses that upset the natural tidal regimes. Such discordance may make necessary excessive maintenance dredging. Geological study of a section of the Texas coast shows that, in a unit coastal environment, there may he a predictable stahle position of a tidal inlet and a common stahle orientation for its channel which might better have been used for the ship channel outlet. Among probable damages to the natural environment resulting from a wrong orientation is excessive sedimentation in the inlet channel. Engineering studies are needed to determine the economics of reorientation and relocation of misfit channels of the type described. The tidal inlet or "pass" is the central channel of a tidal delta. The delta is an enlargement of a barrier sand island at a gap where tidal and other flow into and out of large inland water bodies forms a strong local field of force with a longshore sediment drift and current. Engineering works in this field of force should utilize its characteristics, not fight them. As the coastal section studied here is only one of many, extension of the geologic study, with accompanying engineering studies, should be made to permit general laws of inlets, tidal deltas and barrier islands to be set up for both geology and engineering.

Morphodynamics of a storm-dominated, shallow tidal inlet: the Slufter, the Netherlands

2012 ◽  
Vol 91 (3) ◽  
pp. 325-339 ◽  
Author(s):  
M. van der Vegt ◽  
P. Hoekstra
Keyword(s):  
The Netherlands ◽  
Water Level ◽  
Morphological Change ◽  
Tidal Inlet ◽  
Main Channel ◽  
Fair Weather ◽  
The South ◽  
Short Term ◽  
Inlet Channel ◽  
The North

AbstractIn this article we study the morphodynamics of the Slufter on the short-term (months) and long-term (years to decades). The Slufter is a small, shallow tidal inlet located on the island of Texel, the Netherlands. A narrow (tens of meters) channel connects the North Sea with a dune valley of 400 ha. This narrow channel is located in between a 400-700 m wide opening in the dunes. Approximately 80% of the basin of the Slufter is located above mean high water level and is flooded only during storms, when a threshold water level is exceeded.Analysis of historical aerial photographs revealed that the inlet channel migrates about 100 m per year. In the 1970's it migrated to the south, while since 1980 it is migrating to the north. When the channel reached the dunes at the north side of the dune breach the channel was relocated to the south by man. The channel inside the backbarrier basin was less dynamic. It shows a gradual growth and southward migration of a meander on a decadal time scale.The short-term dynamics of the Slufter were studied during a field campaign in 2008. The campaign aimed at identifying the dominant hydrodynamic processes and morphological change during fair weather conditions and during storm events. During fair weather flow velocities in the main inlet channel were 0.5-0.8 m/s at water depths of 0-1.5 m, slightly ebb-dominant and associated morphological change was small. When water levels were above critical levels during a storm period the hydrodynamics in the main channel drastically changed. The flow in the main channel was highly ebb dominant. Long ebb periods with typical flow velocities of 2 m/s were alternated by much shorter flood periods with typical velocities of 0.5-1 m/s. This resulted in a net outflow of water via the main channel, while we measured a net inflow of water at the beach plain. During the storm period in 2008 we measured a 10 m migration of the channel to the north.We conclude that the Slufter is a storm-dominated tidal inlet system.

The age of metasomatic anhydrite in Mississippian reservoir carbonates, southeastern Saskatchewan

1978 ◽  
Vol 15 (3) ◽  
pp. 424-430 ◽  
Author(s):  
Alan C. Kendall ◽  
Ken L. Walters
Keyword(s):  
Late Cretaceous ◽  
Oil Field ◽  
Reservoir Quality ◽  
South Eastern ◽  
Altered Zone ◽  
Diagenetic Feature

Replacement anhydrite porphyroblasts are abundant in Mississippian carbonates from south-eastern Saskatchewan and have caused deterioration in oil field reservoir quality. Previously they were interpreted to have formed at the time overlying Mississippian bedded anhydrites were deposited. Porphyroblasts are here reported to be absent from a late diagenetic altered zone, composed of dolomitized and anhydrite-plugged beds, that occurs immediately beneath the Mississippian unconformity. This absence from strata that normally contain them indicates that anhydrite porphyroblast growth occurred after the formation of the sub-unconformity altered zone. This zone is believed to have been rendered impermeable, or otherwise made unsuitable for anhydrite replacement, before introduction of fluids that elsewhere precipitated the anhydrite porophyroblasts. The altered zone is dated as post-Watrous redbeds (post-Triassic); consequently the growth of replacement anhydrite post-dates this period. The occurrence of included bitumen in many porphyroblasts indicates that some replacement occurred after or during the introduction of oil into the Mississippian reservoirs (Late Cretaceous?).An early diagenetic origin for pre-replacement-anhydrite joints, stylolites and dolomite need not be invoked now that replacement anhydrite has been shown to be a late diagenetic feature.

Petroleum occurrences in the Mount Diablo area, California

2021 ◽  
Author(s):  
Scott Hector ◽  
Karen Blake ◽  
Tim Elam
Keyword(s):  
Natural Gas ◽  
Source Rock ◽  
Late Cretaceous ◽  
Upper Cretaceous ◽  
Sedimentary Rocks ◽  
Gas Storage ◽  
Oil Field ◽  
Thick Section ◽  
Gas Fields ◽  
Commercial Field

ABSTRACT Mount Diablo is flanked on its northeast side by a thick section of Late Cretaceous and Tertiary sedimentary rocks, which produced small hydrocarbon accumulations in the Los Medanos, Willow Pass, Mulligan Hill, and Concord gas fields. The first well was drilled in 1864, and today most of the active wells on the northeast flank are used for gas storage by Pacific Gas and Electric Company. These fields, which also include the Brentwood oil field, lie to the northeast of Mount Diablo and have produced 6.4 million cubic meters (225 billion cubic feet) of natural gas and over 57 million cubic meters (9.1 million barrels) of oil. The main reservoirs for the Sacramento Basin are sandstones in the Late Cretaceous and Paleogene section. The source rock there is primarily from the Upper Cretaceous Dobbins Shale, which began generation 75 m.y. ago, and the Winters Shale, which began generation 35 m.y. ago. The Livermore Basin is located on the western and southwestern sides of the mountain. The only commercial field in that basin is the small Livermore oil field. This field produces primarily from Miocene sandstones. The Livermore Basin is a Neogene basin that was syntectonically formed in the last few million years and continues to grow today. Studies of the black oils found in the Livermore field show that the source rock is likely the Eocene Nortonville Shale, though the Upper Cretaceous Moreno shale is also considered to be a possible source. The Livermore field has produced 12 million cubic meters of oil (1.9 million barrels).

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