Sediments and sedimentary processes, Yukon Beaufort sea coast by Lewis, C. P.

Cover of: Sediments and sedimentary processes, Yukon Beaufort sea coast | Lewis, C. P.

Published by Information Canada in Ottawa .

Written in English

Read online

Edition Notes

Book details

Statementby C.P. Lewis and D.L. Forbes for the Environmental-Social Program, Northern Pipelines.
SeriesTask Force on Northern Oil Development report -- no.74-29
ContributionsForbes, D. L., Canada. Environmental-Social Program, Northern Pipelines., Task Forceon Northern Oil Development.
ID Numbers
Open LibraryOL21197996M

Download Sediments and sedimentary processes, Yukon Beaufort sea coast

Get this from a library. Sediments and sedimentary processes, Yukon Beaufort Sea coast. [C P Lewis; D L Forbes; Environmental-Social Program, Northern Pipelines (Canada)] -- Report of study of nature, magnitude and frequency of stresses exerted on variety of coastal sedimentary environments at Kay Point, Yukon, and response of environment to stresses.

The item Sediments and sedimentary processes, Yukon Beaufort Sea coast, by C.P. Lewis and D.L. Forbes for the Environmental-Social Program, Northern Pipelines.

--represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in University of Manitoba Libraries.

Clay mineralogy and geochemistry of continental shelf sediments of the Beaufort Sea. In J. Reed and J. Sater (eds.), The Coast and Shelf of the Beaufort Sea. Arctic Institute of North America, Arlington, Va., pp.

–Cited by:   This book uniquely blends cutting-edge research and state-of-the art review articles that take stock of new advances in multibeam mapping and sediment transport technologies, spatial analysis and modelling, and the applications of these advances to the understanding of shelf sediments, morphodynamics, and sedimentary processes.

COASTAL SEDIMENTARY PROCESSES AND SEDIMENTS, SOUTHERN CANADIAN BEAUFORT SEA C.P. Lewis and D.L. Forbes Terrain Sciences Division Geological Survey of Canada Department of Energy, Mines and Resources Ottawa, Ontario Beaufort Sea Technical Report #24 Beaufort Sea Project Dept.

of the Environment Federal Building Government St. The application Sediments and sedimentary processes multibeam and sediment transport measurement technologies and the adoption of multi-faceted research methodologies have greatly advanced our understanding of the sedimentary processes on continental shelves in the last decade.

This book uniquely blends cutting-edge research and state-of-the art review articles that take stock of new advances in multibeam mapping and sediment. sedimentary deposits in the Laptev, East Siberian and Beaufort seas, where local coastal erosion can exceed 20 m / yr.

We also examine coasts with lithified (rocky) substrates where geomorpho. The Cretaceous Afikpo sedimentary Basin in Southeastern Nigeria contains rocks of fluvial, deltaic and shallow marine origin. This study examines the role of sedimentary processes in sediment distribution in the various geologic environments.

The outcrop sections and the Afikpo River were studied by visual observation and photographing of important features during a field mapping. The three major rivers supplying sediments to the Bering Sea are the Yukon, Kuskokwim and Anadyr Rivers, each with sediment loads of 55, 8 and 2 million tons per year respectively (Takahashi,VanLaningham et al., ).

Our results from the chlorite + muscovite assemblage however, indicate that the Yukon River is the major supplier of. The Aru Sea receives massive sediment discharge ( × 10 6 t yr − 1) from ≈ 30 rivers in southwestern New Guinea and upwelling of nutrient-rich water from the Banda Sea.

This region is a rich fishing ground with total catch exceedingt yr − 1, mostly in areas enriched by coastal upwelling. Sedimentary Environments is one of the most distinguished and influential textbooks in the earth sciences published in the last 20 years.

The first and second editions both won universal praise and became classic works in sedimentology. Since the publication of the last edition, the study of sedimentary environments and facies has made great strides, with major advances in facies 4/5(1).

Pan-Arctic coasts on average recede by~ m a −1 (Lantuit et al., ), but coasts consisting of ice-rich permafrost sediments have been shown to be retreating much faster in recent decades. sedimentary rocks are especially important for deciphering Earth history.

• Much of our knowledge of the evolution of life on Earth derives from fossils preserved in sedimentary rocks. • Some sediments and sedimentary rocks are resources in their own right, or contain resources. Sedimentary facies of shoreface-connected sand ridges off the East Frisian Yukon Beaufort sea coast book coast, southern North Sea: climatic controls and preservation potential Chang Soo Son, Burghard W.

Flemming and Tae Soo Chang. Part 2: Sediment transport processes, sedimentation and modelling. Recent advances in understanding continental shelf sediment. Arctic Ocean Sediments: Processes, Proxies, and Paleoenvironment Ruediger Stein (Eds.) Although it is generally accepted that the Arctic Ocean is a very sensitive and important region for changes in the global climate, this region is the last major physiographic province of the earth whose short-and long-term geological history is much less.

The physical, chemical and biological attributes of the Yukon River and tributary basins impact soil erosion, sediment transport and sediment delivery.

The glacier, snow and permafrost melting, runoff, erosion, transport, deposition and storage of gravelly, sandy, silty and clayey sediments determine the habitat distribution and water quality within the river channels and floodplains. The southern Yellow Sea (SYS) is a significant repository of sedimentary organic matter (SOM) and has been impacted by green tides since ; however, data on the distribution and quantitative contributions of different SOM sources has been scarce.

TOC, TN and their δ 13 C and δ 15 N values were determined in 38 surface sediments. TOC and TN. Sediment cores from the Chukchi Sea were taken from the shelf (station 2), shelf break/upper slope (station F9) and basin (station C1). In the Beaufort Sea, sediment samples were also taken from shelf (station 5), upper slope (station 10) and basin (station ) environments (Fig.

Cores 5 and 10 (Fig. 1) were taken with a cm diameter Benthos. A regional classification of shoreline segments along the Alaskan Beaufort Sea Coast was developed as the basis for quantifying coastal morphology, lithology, and carbon and mineral sediment fluxes.

We delineated 48 mainland segments totaling 1, km, as well as 1, km of spits and islands. Mainland coasts were grouped into five broad classes: exposed bluffs ( km), bays.

Such studies may provide a baseline to better interpret, in terms of sediment dynamics and climate change, the mineralogical and geochemical signatures preserved in the southern Beaufort Sea sedimentary records, which may then help to place current western Arctic climate change [e.g., Kwok et al., ] into its broader context.

Ken Ikehara, Kazuko Usami, Toshiya Kanamatsu, Kazuno Arai, Asuka Yamaguchi, Rina Fukuchi, Spatial variability in sediment lithology and sedimentary processes along the Japan Trench: use of deep-sea turbidite records to reconstruct past large earthquakes, Geological Society, London, Special Publications, /SP,1, (), ().

D.J. Burdige, in Treatise on Estuarine and Coastal Science, Sediment Oxygen Consumption. In most estuarine and coastal sediments the large flux of reactive organic carbon to the sediments results in high potential rates of sediment O 2 consumption relative to O 2 transport into the sediments by processes such as molecular diffusion.

Oxygen in the pore waters therefore generally. The sediments in Hope Valley in the south Chukchi Sea also originated from the Yukon River. The coarser population on the central Chukchi Sea Shelf originated from coast of Alaska to the east, not the Yukon River, and was transported by sea ice and bottom brine water.

The nature of the source and the type and intensity of the erosional, transportational, and depositional processes in a coastal region determine the type of material that makes up a beach. In turn, the characteristics of the sediments strongly influence beach morphology and the processes that operate on it (Trenhaile, ).

Over time, the crust and the associated sedimentary material are destroyed at the oceanic trenches. The sedimentary core samples recovered by the “Glomar Challenger” strongly support the seafloor-spreading hypothesis.

No deep-sea sediments older thanyears were discovered, indicating that the seafloor is relatively young. Sediment plumes discharged from Mackenzie Delta, Yukon, into Beaufort Sea, are a maximum during spring-early summer thaw.

The locus of mouth-bar deposition is probably in the whitish region immediately outboard of the lower delta plain. Taken J. Our work is focused on understanding the physical, chemical, and biological controls on the characteristics and distribution of sedimentary facies.

We are particularly interested in studying modern siliciclastic depositional environments to use them as analogues for understanding Earth’s surface processes and deposits from the geological past. Buy Sediments, Morphology and Sedimentary Processes on Continental Shelves (): Advances in Technologies, Research and Applications: NHBS - Michael Z Li, Christopher R Sherwood, Philip R Hill, Wiley-Blackwell.

Kui Wang, Haisheng Zhang, Xibin Han, Wenxian Qiu, Sources and burial fluxes of sedimentary organic carbon in the northern Bering Sea and the northern Chukchi Sea in response to global warming, Science of The Total Environment, /env,(), ().

Lake - Lake - Sediments and sedimentation: Lake sediments are comprised mainly of clastic material (sediment of clay, silt, and sand sizes), organic debris, chemical precipitates, or combinations of these. The relative abundance of each depends upon the nature of the local drainage basin, the climate, and the relative age of a lake.

The sediments of a lake in a glaciated basin, for example. Geological History of Canada. Laurentia, which makes up the core of North America, is the largest and arguably the oldest of Earth’s cratons (regions of stable ancient crust).

Some of the rocks are over 4 billion years old, and Laurentia has been together in its present form for the last billion years.

today (modern sediment) is associated with the Yukon River runoff and the high-speed currents ( em/ sec near the bottom) within the Alaskan Coastal Water, which sets northward along the coast through Bering Strait into the Chukchi Sea.

Most sediment is silt sized but includes some very fine grained sand and clay-sized material. 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). The sediment cover in the Pacific basin ranges from to metres. Sasiri Bandara, Duane Froese, Trevor J. Porter, Fabrice Calmels, Holocene pore‐ice δ18O and δ2H records from drained thermokarst lake basins in the Old Crow Flats, Yukon, Canada, Permafrost and Periglacial Processes, /ppp, 31, 4, (), ().

Constraints on the origin of sedimentary organic carbon in the Beaufort Sea from coupled molecular 13C and 14C measurements. Marine Chemistry(), DOI: /m Donghao Li, Won Joon Shim, Meihua Dong, Sang Hee Hong Oh.

The processes by which the sediment becomes lithified into a hard sedimentary rock is called diagenesis and includes all physical, chemical and biological processes that act on the sediment.

The first step in diagenesis is the compaction of the sediment and loss of water as a result of the weight of the overlying sediment. Sediment is solid material that is moved and deposited in a new location. Sediment can consist of rocks and minerals, as well as the remains of plants and animals.

It can be as small as a grain of sand or as large as a boulder. Sediment moves from one place to another through the process of n is the removal and transportation of rock or soil. The aim of this study is to investigate evidence of water seepage into sediments of the Canadian Beaufort Sea margin and to identify the sources of such fluids as determined by the chemistry of sediment pore waters.

2 Regional Setting of the Beaufort Shelf and Slope Sedimentary Setting. We use bivariate scatter plots to illustrate variations in selected rock magnetic properties (low‐field susceptibility, anhysteretic and isothermal remanence) of late Neogene and Pleistocene deep‐sea sediments from 16 sites in the Arctic Ocean, North Atlantic, equatorial Atlantic and North Pacific Ocean, and the Arabian Sea.

Sea level change Impact on the sedimentary record • transgressive-regressive facies are very common in the rock record; lateral migration of facies with rising and falling sea level • changing water table and base-level • sedimentary architecture to reconstruct sea level, (sequence stratigraphy: transgressive, highstand, and lowstand systems tracks, maximum flooding surface, sequence.

The coast of the Southern Canadian Beaufort Sea consists of bluffs of ice-bearing Quaternary sediments, and of spits and barrier islands enclosing (more or less completely) lagoons and complex.The Ross Sea is a deep bay of the Southern Ocean in Antarctica, between Victoria Land and Marie Byrd Land and within the Ross Embayment, and is the southernmost sea on derives its name from the British explorer James Ross who visited this area in To the west of the sea lies Ross Island and Victoria Land, to the east Roosevelt Island and Edward VII Peninsula in Marie Byrd Land.The Beaufort Sea: Deltaic Coast •East of Point Barrow, the coast is dominated by river deltas.

•Rivers draining the Brooks Range and the northern Canadian Rockies, built these deltas even though the rivers flow only a short period each year.

•Where the deltas are not actively building into the sea, extensive barrier islands can be found.

35002 views Monday, November 16, 2020