Aeolian sediments: ancient and modern by Kenneth Pye, N. Lancaster

By Kenneth Pye, N. Lancaster

Reviews of aeolian sediments, either historic and sleek, have exhibited a few very important conceptual advances lately. particularly, there was a movement clear of descriptions of sediments, bedforms and sedimentary environments towards a brand new emphasis at the dynamics of aeolian depositional structures at assorted temporal and spatial scales, and their reaction to exterior alterations in sea degrees, nearby and worldwide climates and tectonics. This specified e-book incorporates a number of papers that have been provided on the Symposium "Aeolian Sediments: old and smooth" held in 1990. it's also a few contributions from authors who weren't capable of attend the assembly, yet whose paintings displays vital facets of latest study in aeolian sedimentology.State-of-the-art learn papers in aeolian sedimentologyInternational, specialist authorshipOf relevance to fashionable matters approximately worldwide weather changeIf you're a member of the overseas organization of Sedimentologists, for getting information, please see: http://www.iasnet.org/publications/details.asp?code=SP16

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19�3c). trpncss of the forms becomes subdued by sub� aerial processes (Ward, 1977: Pye, 1 983d: Thompson & Bowman, 1984). Cnse in Fig. 14 represents a situation involving three dUllc generations transgressing over �I deeply podzolizcd sandplain SUI'f:lcc. In this case. lckecl sedimentary sequence. The age structure or the dUlles on the Quccnsl'lIld Collst has received considerable attention in the laSI few years (Ward. 1977: rimes. 1979: ook, 1 986: Ward & Grirncs, 1987: Cov cn lry 1988; Lecs el ai" IY90).

N , ( 1 9S5) Val'i(Ltior�s in wincl vclocity Ullel SUIl(1 transpon on the wi ndwfll'd na n ks of cl esc r t sand duncs. Scciilll/:lllology 32. 58 1 - 593, LllltNGSTf)NH. I'IlS over a N a lll ib lincflI' d U I lC , I n : " Aeo/itlll GeolllOl'/JllOlogy (Ed. Nickling. W , G , ) pp, 97- 1 1 2, Allen & Unwin. IOM ... K , R , ( 1 988) Ve locity prolilcs measurcd on the w i ndward slope of ,; t['illlSVcrsc dune, £(lI'/h SIO): PrOC. {///(I/. 13. 573-582. TSOAI(, H, ( 1983) Dynamic processes. ) Variations in wind velocity and sand transport 011 the windward nallk of desert S�llld dUlles, Discussion, SedillJelliology 34.

Trans­ the possib l e complexities. however . the evidence ve rse dunes and dome dUlles arC th e p redom i nan t In broad terms. the rorm and scale of aeolian sand acc u m u la t i o ns arc likely to be dcterm i nc d by forms which develop in arid ve locity va r i a bili t y : distribution with a h i gh ly CHnl cross- wi nd . these forms may displa y asymmctry. sand availability: rcversi ng behaviour. superimposed bedforms with a 2 grai n size distribution: 3 willd areas u n idi rectional wind regime.

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