North American Continent-Ocean Transects Program (1989) / Chapter Skim
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1. Overview
1. Overview
Pages 3-9
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From page 3... ...
Within two years after its initiation, the program expanded to include Canadian and Mexican corridors; thus it became a North American Continent-Ocean Transects Program. The program includes about 200 geologists and geophysicists from Canada, Mexico, and the United States.
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From page 4... ...
4~ Fuca PA Pacif ic Plate — A M E R I C A N ~ Atlantic \ ~ ~ ~ ~ ~ ~ C, , L | P 1 a t e H = ~ _ |-~ . ~ active margin 1 2 0 O Caribbean,' Plate · I ;~ I,/ 5 HO FIGURE 1 Map of North American continent and plate showing positions of 23 corridors of the Transects Program.
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From page 5... ...
The continental edges adjoining the Atlantic and Arctic oceanic lithospheres are passive margin types; they occur within the North American plate. Greenland and an undefined region offshore of western Alaska belong to the North American continent under this definition, but the Transects Program has not included them in its study.
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From page 6... ...
The southern edge of the North American continent is less clearly delineated because much of it is below sea level and because of the two closed oceanic basins, the Gulf of Mexico and the Yucatan basin. The Transects Program has arbitrarily assigned to the continent all regions of the North American plate not floored by oceanic lithosphere as far south as its boundary with tectonic borderlands of the Caribbean plate (Figure 1~.
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From page 7... ...
Zone 4: Displacing Terranes: The modern continent of North America incorporates parts of the Pacific plate as well as the North American plate. These parts (zone 4, Figure 1)
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From page 8... ...
The 23 corridor locations are selected to provide hemispheric representation of North American continent-ocean transitions, but more important, they incorporate the most significant examples of modern and ancient continental margin structures. An unport ant element in understanding the evolution of the transition is the ability to compare its structure corridor by corridor.
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From page 9... ...
9 ;;Fs , ' ~ ~ : ~ '; o ~ Cod A
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