Foraminifera from Late Quaternary Dune Sands of the Thar Desert, India

Palaios ◽  
1989 ◽  
Vol 4 (2) ◽  
pp. 168 ◽  
Author(s):  
K. Kameswara Rao ◽  
R. J. Wasson ◽  
M. Krishnan Kutty
Keyword(s):  
Late Quaternary ◽  
Thar Desert ◽  
Dune Sands

Late Quaternary loess and soils on uplands in the Canyonlands and Mesa Verde areas, Utah and Colorado

2017 ◽  
Vol 89 (3) ◽  
pp. 718-738 ◽  
Author(s):  
Marith C. Reheis ◽  
Harland L. Goldstein ◽  
Richard L. Reynolds ◽  
Steven L. Forman ◽  
Shannon A. Mahan ◽  
...  
Keyword(s):  
National Park ◽  
Late Quaternary ◽  
Magnetic Data ◽  
Small Component ◽  
Dune Sands ◽  
Black Mesa ◽  
Mesa Verde ◽  
Canyonlands National Park ◽  
San Juan River ◽  
Buried Soil

AbstractThin loess deposits on the uplands of the southeastern Colorado Plateau have previously not been well studied. We sampled deposits and soils from trenches on Hatch Point (HP) mesa near Canyonlands National Park, Utah, and from two outcrops in Mesa Verde National Park, Colorado. At HP, the oldest buried unit yielded 2 optically stimulated luminescence (OSL) ages of 10,370 and 7555 yr; the middle unit yielded 10 OSL ages from 6220 to 1385 yr; and the youngest unit had a single age of 1740 yr. At Mesa Verde (MV), three loess units are preserved in the two outcrops we examined; 6 OSL ages range from 51 to 17 ka. At least one buried soil is present between two units with ages of about 50 and 40 ka. The ages of the loess units in both study areas correspond well with OSL-dated dune sands in Canyonlands National Park and with dune sands on Black Mesa, Arizona. Particle-size distribution combined with chemical and magnetic data indicate that HP loess was derived mostly from nearby sandstone sources with a small component of far-traveled atmospheric dust, whereas MV loess was sourced both from the nearby sandstone and the San Juan River and its tributaries.

Multiple episodes of aggradation and calcrete formation in Late Quaternary aeolian sands, Central Thar Desert, Rajasthan, India

2010 ◽  
Vol 37 (1) ◽  
pp. 10-16 ◽  
Author(s):  
R.P. Dhir ◽  
A.K. Singhvi ◽  
J.E. Andrews ◽  
A. Kar ◽  
B.K. Sareen ◽  
...  
Keyword(s):  
Late Quaternary ◽  
Thar Desert ◽  
Multiple Episodes ◽  
Aeolian Sands

Reconstruction of the late Quaternary environment of the lower Luni Plains, Thar Desert, India

2001 ◽  
Vol 16 (1) ◽  
pp. 61-68 ◽  
Author(s):  
A. Kar ◽  
A. K. Singhvi ◽  
S. N. Rajaguru ◽  
N. Juyal ◽  
J. V. Thomas ◽  
...  
Keyword(s):  
Late Quaternary ◽  
Thar Desert

Optical Dating of Holocene Dune Sands in the Ferris Dune Field, Wyoming

1993 ◽  
Vol 39 (3) ◽  
pp. 274-281 ◽  
Author(s):  
Stephen Stokes ◽  
David R. Gaylord
Keyword(s):  
Late Quaternary ◽  
Dune Sand ◽  
Optical Dating ◽  
Dune Field ◽  
Considerable Potential ◽  
Dune Sands ◽  
Aeolian Deposits

AbstractOptical dating of late Quaternary quartz dune sands from the Clear Creek portion of Ferris dune field, Wyoming, demonstrates the considerable potential of the technique as a chronostratigraphic tool. A sequence of radiocarbon-dated Holocene interdune strata permit optical dating of the intercalated dune sand to be tested; the concordance is good. The optical dates for the aeolian deposits not datable by radiocarbon suggest that aeolian sedimentation at Clear Creek peaked during two relatively short phases at ca. 8500 and 4000 yr B.P. The dates indicate that aeolian accumulation maxima (at least in the Clear Creek area) may not be synchronous with previously defined phases of marked aridity.

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