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Wednesday, August 5, 2020 | History

2 edition of Sedimentation within the Cocos Gap, Panama Basin found in the catalog.

Sedimentation within the Cocos Gap, Panama Basin

Lynn Gretton Dowding

Sedimentation within the Cocos Gap, Panama Basin

by Lynn Gretton Dowding

  • 46 Want to read
  • 26 Currently reading

Published .
Written in English

    Subjects:
  • Sediments (Geology) -- Pacific Ocean -- Panama Basin.

  • Edition Notes

    Statementby Lynn Gretton Dowding.
    The Physical Object
    Pagination[10], 69 leaves, bound :
    Number of Pages69
    ID Numbers
    Open LibraryOL15519701M

    Rapid basin subsidence and sedimentary filling took place during this phase. Broad carbonate shelves became established on the western, northern, and eastern margins of the Permian Basin and Central Basin Platform as a result of its equatorial location during this phase. Clastics meanwhile dominated in the basins. By Late Paleozoic time the original Tobosa Basin was divided into the northwest. As a result of its current collisions with South America and the Cocos plate, the Panama plate is currently moving northward (Harmon, ). Other consequences of this are regional uplift, bending of the plate, and strike-slip faulting within the plate (Harmon, ).

    how and where sedimentary strata have been deposited and preserved during Earth history. The formation of sedimentary basins is ultimately controlled by topography that defines the surface depressions that receive the sediments, the elevated regions that provide sediment sources, and the topographic and bathymetric gradients that transport sediments from source to basin. Sedimentary succes- sions in these basins are of middle Mesozoic to Recent age. Older sedimentary deposits were not preserved, probably because during the Paleozoic - early Mesozoic, what is now Nigeria was a broad regional basement uplift, with no major basin subsi- dence for sediment .

    applications to basin analysis 95 Christopher A-L. Jackson and Karla E. Kane 6. Dispersal and preservation of tectonically generated alluvial gravels in sedimentary basins Philip A. Allen and Paul L. Heller 7. Source-to-sink sediment volumes within a tectono-stratigraphic model for a Laramide shelf-to-deep-water basin: methods and results average basin erosion rate of 95 mm ky These preliminary results suggest that the mostly undisturbed tropical Rio Chagres basin is supplying sediment at similar rates as the long-term basin wide sediment generation. The network analysis of 10Be provides natural rates of sediment yield with which to compare.


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Sedimentation within the Cocos Gap, Panama Basin by Lynn Gretton Dowding Download PDF EPUB FB2

Other | Septem Sediment dispersal within the Cocos Gap, Panama BasinCited by: 4. The Cocos Gap is a deeper portion, or saddle, of the Cocos Ridge and forms part of the western boundary of the Panama Basing It is probably typical of saddles within most submarine ridges, In order to determine the mechanisms controlling sediment dispersal, the nature and sources of the sediments at 23 core locations were defined by Cited by: 2.

Sedimentation within the Cocos Gap, Panama Basin. Abstract. Graduation date: The Cocos Gap is a deeper portion, or saddle, of the Cocos\ud Ridge and forms part of the western boundary of Panama Basin book Panama Basing\ud It is probably typical of saddles within most submarine ridges, In\ud order to determine the mechanisms controlling sediment.

TECTONICS AND SEDIMENTATION IN THE PANAMA BASIN Figure 4. Thickness of sediment above acoustic basement in tenths of seconds two-way travel time. Multiplying these figures by 80 yields approximate sediment thicknesses in meters. Horizontally hatched areas are young crust along the Galapagos Rift Zone or eroded crests of the Cocos and Carnegie.

Jumbo piston sediment core locations from seismically identified thin and thick Cocos (blue stars) and Carnegie (purple stars) sites in the Panama Basin.

Bathymetry from Smith and Sandwell (). Coldest colors represent deepest waters (i.e., basins), while warmest colors represent shallow waters (i.e., ridges).Cited by: 4. In the case of a rectangular sedimentation basin with the inlet and outlet at opposite ends of the basin, the particle must settle within the length of the basin.

As the particle settles, it is carried forward by the velocity of the liquid flow through the basin. In this configuration, if Vf is the velocity of fluid, Vs Panama Basin book settling velocity of the particle, L the length of the basin, and d.

Enhance sediment retention within the basin with inlet and outlet selection and by increasing the length-to-width ratio of the basin.

Determine sedimentation rates using the Revised Universal Soil Loss Equation 2 (RUSLE2), or other approved methodology. Just within the past ten years, computational techniques known as backstripping have been developed to “undo” the deposition in a sedimentary basin.

This involves restoring the basin to a whole series of past configurations by removing one layer of sediment at a. Summary This chapter contains sections titled: Introduction Background Sumisu Rift Lau Basin Sulu Basin Japan Sea Discussion and Conclusions Sedimentation in Western Pacific Backarc Basins: New Insights from Recent ODP Drilling - Marsaglia - - Geophysical Monograph Series.

Click on the book chapter title to read more. Sedimentation Manual 3 March Fire greatly increases the amount of runoff and erosion from a mountain watershed. A recently denuded watershed will produce greater than normal sediment volumes due to higher runoff caused by a lack of vegetation and lowered infiltration rates.

The Port of San Francisco (POSF) desired to evaluate impacts of various proposed activities within the Central Basin, which is subject to sedimentation by fine sediments.

One primary goal of the project was to evaluate potential increases in sedimentation following various pier removal, dredging, and park construction activities.

Sedimentation and subsidence rates and shelf-to-basin depositional relief during early Leonard time represent the maxima for the Early Permian on the North Platform. Four regionally correlative megacycles are readily identifiable within shelf deposits in each of these formations, and the tops of these represent periods of sea-level lowstand and.

The Permian basin of west Texas and Southeastern New Mexico is one of the major petroleum producing regions of the United States.

This basin produced 3% of the world's petroleum in and in that year, 1% of the world's proven reserves were in the Permian basin (Robichaud, ). Most of the Upper Permian hydrocarbon reservoirs are in San Andres and Grayburg formations (Galloway et al.

Purchase Lithostratigraphic Analysis of Sedimentary Basins - 1st Edition. Print Book & E-Book. ISBNPhoto 1 – Type A basin Photo 2 – Type C basin.

Key Principles 1. Sediment trapping is primarily achieved through particle settlement. Some basins may incorporate a filtration system within the outlet structure, but these filters are generally unreliable. Consequently the focus should always remain on achieving effective particle settlement.

Also, little basin hydrology was utilized (cf. Galloway and Hobday, ). But by logically relating a huge amount of data, all parts of basin analysis were admirably put into proper context; a continual job for the future also as indicated by the structure into the system of basin analysis.

The Panama Basin area is influenced by bottom currents from the Peru Basin, entering through the Ecuador Trench with a sill depth of m. Water masses disperse north- and westward off northern Ecuador and penetrate into the SW Panama Basin south of the Malpelo Ridge where they spread to the north and the south (Laird, ; Lonsdale, ).

Sedimentation basins are designed to let sediment settle out, and the remaining clean(er) water flows away through an outlet and spillway.

In the case of Sedimentation Basin #2, there is no outlet because this is a former quarry and the water in the basin is exchanged through the walls with groundwater.

Ocean basin - Ocean basin - Deep-sea sediments: The ocean basin floor is everywhere covered by sediments of different types and origins. The only exception are the crests of the spreading centres where new ocean floor has not existed long enough to accumulate a sediment cover.

Sediment thickness in the oceans averages about metres (1, feet). Rock types and sedimentation of deeper basin zone situated between Schwaner mountains block to the south and SW Sarawak basin to the north suggest progressive marine sedimentation.The book features four new chapters that cover the sedimentary basins of Alaska and the Canadian Arctic.

In addition to sedimentary geologists, this updated reference is relevant for basin analysis, regional geology, stratigraphy, and for those working in the hydrocarbon exploration industry.Abstract.

The authors recognize three basin-forming periods in southern Central America (Panama, Costa Rica, southern Nicaragua) that they attempt to correlate with events in the Colombian basin (Bowland, ): (1) Early-Late Cretaceous island arc formation and growth of the Central American island arc and Late Cretaceous formation of the Colombian basin oceanic plateau.