Changes

Eolian sands develop in arid settings and commonly form extensive, blanket-like deposits (Figure 3b). Wind transport removes fines and produces rounded and extremely well sorted grains often leading to favorable reservoir quality.

Eolian sands develop in arid settings and commonly form extensive, blanket-like deposits (Figure 3b). Wind transport removes fines and produces rounded and extremely well sorted grains often leading to favorable reservoir quality.

This combination of widespread occurrence and good reservoir properties makes eolian sandstones attractive exploration targets and many hydrocarbon accumulations have been discovered in such deposits (see <ref name=pt06r2>Ahlbrandt, T. S., Fryberger, S. G., 1982, Introduction to eolian deposits, in Scholle, P. A., Spearing, D. eds., Sandstone Depositional Environments: AAPG Memoir 31, p. 11–47.</ref>).

This combination of widespread occurrence and good reservoir properties makes eolian sandstones attractive exploration targets and many hydrocarbon accumulations have been discovered in such deposits<ref name=pt06r2>Ahlbrandt, T. S., Fryberger, S. G., 1982, [http://archives.datapages.com/data/specpubs/sandsto2/data/a058/a058/0001/0000/0011.htm Introduction to eolian deposits], in Scholle, P. A., Spearing, D. eds., Sandstone Depositional Environments: [http://store.aapg.org/detail.aspx?id=627 AAPG Memoir 31], p. 11–47.</ref>).

Eolian deposits include dune, interdune, sand sheets (marginal to dune complex), and extradune (noneolian) lateral deposits.<ref name=pt06r2 />) Dune deposits comprise the major sedimentary bodies in eolian successions. All are characterized by large scale cross stratification in which foreset dips range up to 35°. Associated deposits may include those of wadi (fluvial), playa (lacustrine), and sabkha (arid tidal flat) origin.

Eolian deposits include dune, interdune, sand sheets (marginal to dune complex), and extradune (noneolian) lateral deposits.<ref name=pt06r2 />) Dune deposits comprise the major sedimentary bodies in eolian successions. All are characterized by large scale cross stratification in which foreset dips range up to 35°. Associated deposits may include those of wadi (fluvial), playa (lacustrine), and sabkha (arid tidal flat) origin.