Tushka region of Egypt is covered by a huge sand sheet
today, but years ago, it was home to a lake as big as one of the Great Lakes, said T.
Q My male red rump parakeet has started to tear up his sand sheet
NEP22 is located near the western limit of this sand plain, where the confluence of several creek lines forms an erosional boundary blocking further extension of the sand sheet.
The overall pattern suggests that the artefacts in the Pleistocene unit and lower part of the colluvium, represent part of a low density 'background' scatter of lithics on the sand sheet.
1981, Predicted sand-wave formation and decay on a large offshore tidal current sand sheet
These bar platforms are overlain by suprabar platform deposits (lithofacies Smc and Sh) organized into laminated sand sheet sequences, and chute channels filled with small bedforms (lithofacies St and Sr).
Specific architectural elements include gravel bar-platform deposits (including bar head, bar core, and bar tail sub-elements), suprabar-platform deposits (laminated sand sheets and chute channel-fills), bar-margin foreset deposits, and sandy 2-D and 3-D dune deposits.
The radar penetrated large areas of the Sahara where the sand sheet
is no more than several feet thick, revealing a web of valleys and smaller channels winding beneath the desert sands (SN: 4/21/84, p.
Faunally barren, shallow, mobile sand sheets were the dominant habitat sampled in Sachs Harbour.
Nearly all of the grab sample sites (90%) and video transects (91%) that were devoid of macrobenthos were found within the broad sand sheets that dominated Thesiger Bay.
Halophytes are generally restricted to certain microhabitats in the sand sheets
, usually depressions, which are occasionally inundated.
More information could have been presented here on other paleoenvironmental determinations provided by the fossil soils and plant and animal remains that commonly are well preserved in Quaternary eolian deposits such as sand sheets
and loess accumulations.