The Transcontinental Arch refers to the islands of North America which extended from New Mexico to Minnesota and the Great Lakes region.[1][2] These islands were present during the Sauk sequence, the earliest cratonic sequence. As a result of the Sauk sequence, epeiric seas covered most of North America, leaving only the craton of the Canadian Shield and the Transcontinental Arch islands exposed.
The Transcontinental Arch, as originally understood, was at its peak during the Pennsylvanian, around 323 to 299 million years ago. However, the arch may have been present as early as the late Proterozoic and experienced repeated rejuvenation throughout the Paleozoic (521 to 252 million years ago).[2]
^Wicander, Reed; Monroe, James S. (2013). Historical geology : evolution of earth and life through time (Seventh ed.). Belmont, CA: Cengage Learning. ISBN 978-1111987299.
^ abCarlson, Marvin P (May 1999). "Transcontinental Arch — a pattern formed by rejuvenation of local features across central North America". Tectonophysics. 305 (1–3): 225–233. doi:10.1016/S0040-1951(99)00005-0.
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The TranscontinentalArch refers to the islands of North America which extended from New Mexico to Minnesota and the Great Lakes region. These islands...
important feature was the TranscontinentalArch, which ran southwest from the lowlands of the Canadian Shield. The shield and the arch were the only portions...
margin of land temporarily rose above the water along the ancestral TranscontinentalArch, each time rejoining the separated, divergent land populations,...
the line of the deepest channel of the seaway; but being on the TranscontinentalArch, the Front Range areas was relatively shallow and was near the last...
Sea, save for parts of the Canadian Shield and the islands of the TranscontinentalArch. The stratigraphy of the Sauk sequence indicates shallow-water deposition...
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connection between the east and west continent at the ancestral TranscontinentalArch. Each sequence represents a cycle of major progression of the seaway...
longshore current to the north. The area was at the western edge of the TranscontinentalArch. The formation was first designated by Cross and Spencer in 1899...
and tectonic stability. The area was at the western edge of the TranscontinentalArch and the formation may record deposition along a rocky shoreline...
Chinese railroad workers who built the Transcontinental Railroad. Southern Pacific Monument (2016) Chinese Arch (2016) The General Electric 25-ton switcher...
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final spike driven by Leland Stanford to join the rails of the first transcontinental railroad across the United States connecting the Central Pacific Railroad...
contrasting Grenville-age and Cambrian sources on opposite sides of the TranscontinentalArch". Geological Society of America Bulletin. 124 (11–12): 1826–1840...
Fort Hays, Bridge Creek, Greenhorn. However, northwest of the TranscontinentalArch where western sediment sources are more dominant, altering the lithology...
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bureaucratic society. While working incognito as a laborer for Taggart Transcontinental railroad, he travels to visit the key figures that he has not yet recruited...
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