Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 679-682 |
| Number of pages | 4 |
| Journal | Geology |
| Volume | 43 |
| Issue number | 8 |
| Early online date | 23 Jun 2015 |
| DOIs | |
| Publication status | Published - 1 Aug 2015 |
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Recognition and importance of amalgamated sandy meander belts in the continental rock record. / Hartley, Adrian J.; Owen, Amanda; Swan, Alistair; Weissmann, Gary S.; Holzweber, Barbara I.; Howell, John; Nichols, Gary; Scuderi, Louis.
In: Geology, Vol. 43, No. 8, 01.08.2015, p. 679-682.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Recognition and importance of amalgamated sandy meander belts in the continental rock record
AU - Hartley, Adrian J.
AU - Owen, Amanda
AU - Swan, Alistair
AU - Weissmann, Gary S.
AU - Holzweber, Barbara I.
AU - Howell, John
AU - Nichols, Gary
AU - Scuderi, Louis
N1 - Date of Acceptance: 27/05/2015 ACKNOWLEDGEMENTS This work was supported by the Fluvial Systems Research Group sponsors BG Group, BP, Chevron, ConocoPhillips, and Total.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - Meandering fluvial channels and their meander belts are common in modern continental sedimentary basins, yet compose a minor constituent of the reported fluvial rock record. Here we document exhumed amalgamated meander belt deposits from the upper Jurassic Morrison Formation, Utah (United States). The size of the amalgamated meander belt (9000 km2) is significantly larger than any documented previously and comparable in size to those from modern sedimentary basins. We describe a representative outcrop of sandy point bar deposits that shows features considered characteristic of both braided and meandering fluvial systems. Lateral accretion sets compose <5% of the outcrop area, yet point bar morphology is clearly visible in plan view. We suggest that difficulties in the identification of sandy, amalgamated meander belt deposits indicate that they have gone largely unrecognized in the rock record. Their recognition has important implications for basin-scale reconstructions of fluvial systems and interpretation of tectonic setting.
AB - Meandering fluvial channels and their meander belts are common in modern continental sedimentary basins, yet compose a minor constituent of the reported fluvial rock record. Here we document exhumed amalgamated meander belt deposits from the upper Jurassic Morrison Formation, Utah (United States). The size of the amalgamated meander belt (9000 km2) is significantly larger than any documented previously and comparable in size to those from modern sedimentary basins. We describe a representative outcrop of sandy point bar deposits that shows features considered characteristic of both braided and meandering fluvial systems. Lateral accretion sets compose <5% of the outcrop area, yet point bar morphology is clearly visible in plan view. We suggest that difficulties in the identification of sandy, amalgamated meander belt deposits indicate that they have gone largely unrecognized in the rock record. Their recognition has important implications for basin-scale reconstructions of fluvial systems and interpretation of tectonic setting.
U2 - 10.1130/G36743.1
DO - 10.1130/G36743.1
M3 - Article
VL - 43
SP - 679
EP - 682
JO - Geology
JF - Geology
SN - 0091-7613
IS - 8
ER -