Title : The largest delta plain in Earth's history
link : The largest delta plain in Earth's history
The largest delta plain in Earth's history
The largest delta plain in Earth's history formed along the northern coast of the supercontinent Pangea in the late Triassic. Its size out-scales modern counterparts by an order of magnitude, and approximates 1% of the total land area of the modern world. And although contenders are found in the rock record, no ancient counterpart exceeds the extent of the Triassic delta plain mapped in the subsurface Barents Sea either.
An important part of this study by, published in Geology, was to document and compare the size of the delta plain, but also to understand why it grew so large.
Aerially extensive 3-D seismic datasets and rock samples collected for petroleum exploration in the Barents Sea have revealed that delta plains covered the entire basin during the Triassic. Comparing the size of this delta plain to modern and -- more challenging -- ancient delta plains shows that the Triassic delta plains of the Barents Sea were the largest in Earth's history that has been preserved in the rock record. Its tremendous size accounts for nearly 1% of the land areas of the modern world, and was facilitated by a vast drainage area feeding sediments to a shallow basin were sediments accumulated.
Story Source:
Materials provided by Geological Society of America. Note: Content may be edited for style and length.
Journal Reference:
- Tore Grane Klausen, Björn Nyberg, William Helland-Hansen. The largest delta plain in Earth’s history. Geology, 2019; DOI: 10.1130/G45507.1
Cite This Page:
Geological Society of America. "The largest delta plain in Earth's history." ScienceDaily. ScienceDaily, 25 March 2019. <https://ift.tt/2YktU5D>.
Geological Society of America. (2019, March 25). The largest delta plain in Earth's history. ScienceDaily. Retrieved March 26, 2019 from https://ift.tt/2YktU5D
Geological Society of America. "The largest delta plain in Earth's history." ScienceDaily. https://ift.tt/2YktU5D (accessed March 26, 2019).
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