Geological Hazards Related To Offshore Drilling And Construction In The Orinoco River Delta Of Venezuela

Butenko, J.; Barbot, J.P.

doi:10.4043/3395-ms

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…King & MacLean (1970) were the first to recognize and describe pockmarks as prominent seabed features on the Scotian Shelf. Since then pockmarks have been discovered and described from several shallow seas around the world: the North Sea, the Gulf of Mexico (Sieck, 1975), the Bering Sea (Nelson et al, 1979), the Great Lakes (Berkson & Clay, 1973), the South China Sea (Platt, 1977), the Baltic Sea (Werner, 1978), the Aegean Sea (Newton, Cunningham &Schubert, 1980), the Orinoco Delta, Venezuela (Butenko & Barbot, 1979) and several other areas (Josenhans, King &Fader, 1978 andFannin, 1979).…”

Section: Introductionmentioning

confidence: 99%

Characteristic features of pockmarks on the North Sea Floor and Scotian Shelf

1984

View full text Add to dashboard Cite

This paper presents the results of a comparative study of pockmarks and associated features appearing on both sides of the North Atlantic: on the Scotian Shelf off Nova Scotia and in the northern North Sea. Pockmarks are formed in seabed material consisting of soft silty clay. The seismic, sonar and lithologic characteristics of the sediments on the Scotian Shelf are remarkably similar to those found in the northern North Sea. Sediment clouds suspended in the water column immediately over the seabed have previously been observed on side‐scan records associated with gas‐charged sediments on corresponding shallow‐seismic records. These and similar observations strongly suggest that most pockmarks are caused by gas efflux through the seafloor. However, the detailed mechanism of formation and the origin of the gas in the sediments is still unknown.

show abstract

Section: Introductionmentioning

confidence: 99%

Characteristic features of pockmarks on the North Sea Floor and Scotian Shelf

1984

View full text Add to dashboard Cite

show abstract

“…The Orinoco shelf is a broad, low-gradient (0.02% to 0.5%) feature (Butenko and Barbot, 1979). The Orinoco delta-front and prodelta deposits are as thick as 70 m and form a rather narrow belt oriented parallel to the Atlantic shoreline, extending only about 40 to 60 km seaward to the coast (Fig.…”

Section: Orinoco Deltamentioning

confidence: 99%

Regional controls on geomorphology, hydrology, and ecosystem integrity in the Orinoco Delta, Venezuela

et al. 2002

View full text Add to dashboard Cite

Interacting river discharge, tidal oscillation, and tropical rainfall across the 22,000 km 2 Orinoco delta plain support diverse fresh and brackish water ecosystems. To develop environmental baseline information for this largely unpopulated region, we evaluate major coastal plain, shallow marine, and river systems of northeastern South America, which serves to identify principal sources and controls of water and sediment flow into, through, and out of the Orinoco Delta. The regional analysis includes a summary of the geology, hydrodynamics, sediment dynamics, and geomorphic characteristics of the Orinoco drainage basin, river, and delta system. Because the Amazon River is a major source of sediment deposited along the Orinoco coast, we summarize Amazon water and sediment input to the northeastern South American littoral zone. We investigate sediment dynamics and geomorphology of the Guiana coast, where marine processes and Holocene history are similar to the Orinoco coast. Major factors controlling Orinoco Delta water and sediment dynamics include the pronounced annual flood discharge; the uneven distribution of water and sediment discharge across the delta plain; discharge of large volumes of water with low sediment concentrations through the Río Grande and Araguao distributaries; water and sediment dynamics associated with the Guayana littoral current along the northeastern South American coast; inflow of large volumes of Amazon sediment to the Orinoco coast; development of a fresh water plume seaward of Boca Grande; disruption of the Guayana Current by Trinidad, Boca de Serpientes, and Gulf of Paria; and the constriction at Boca de Serpientes. D

show abstract

Geological Hazards Related To Offshore Drilling And Construction In The Orinoco River Delta Of Venezuela

Cited by 2 publications

References 0 publications

Characteristic features of pockmarks on the North Sea Floor and Scotian Shelf

Characteristic features of pockmarks on the North Sea Floor and Scotian Shelf

Regional controls on geomorphology, hydrology, and ecosystem integrity in the Orinoco Delta, Venezuela

Contact Info

Product

Resources

About