Changes

Eolian deposits include [[dune]], [[interdune]]  (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]]  (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.

In the subsurface, eolian sandstones generally comprise thickly bedded sequences with few major interstratified shales. The sequences tend to be uniform and lack discernible coarsening- or fining-upward trends and, thus, exhibit blocky to weakly serrated [[Basic open hole tools#Gamma ray|gamma ray]], [[Basic open hole tools#Spontaneous potential|SP]], and [[Basic open hole tools#Resistivity|resistivity]] log profiles The well-bedded and high angle cross stratified nature of eolian sandstones promotes reliable results from [[Dipmeter analysis|dipmeter]] logs. Dune and interdune deposits can often be distinguished and paleowind directions inferred using correctly processed dipmeter data.<ref name=pt06r80>Lupe, R., Ahlbrandt, T. S., 1979, Sediments of the ancient eolian environment—reservoir inhomogeneity, in McKee, E., D., ed., A Study of Global Sand Seas: U., S. Geological Survey Professional Paper 1052, p. 241–252.</ref>

In the subsurface, eolian sandstones generally comprise thickly bedded sequences with few major interstratified shales. The sequences tend to be uniform and lack discernible coarsening- or fining-upward trends and, thus, exhibit blocky to weakly serrated [[Basic open hole tools#Gamma ray|gamma ray]], [[Basic open hole tools#Spontaneous potential|SP]], and [[Basic open hole tools#Resistivity|resistivity]] log profiles The well-bedded and high angle cross stratified nature of eolian sandstones promotes reliable results from [[Dipmeter analysis|dipmeter]] logs. Dune and interdune deposits can often be distinguished and paleowind directions inferred using correctly processed dipmeter data.<ref name=pt06r80>Lupe, R., Ahlbrandt, T. S., 1979, Sediments of the ancient eolian environment—reservoir inhomogeneity, in McKee, E., D., ed., A Study of Global Sand Seas: [http://pubs.er.usgs.gov/publication/pp1052 U.S. Geological Survey Professional Paper 1052], p. 241–252.</ref>

Eolian sandstones generally comprise excellent reservoir intervals but often possess complex [[porosity]] and [[permeability]] variations. They are commonly anisotropic with regard to the flow of fluids and exhibit greater horizontal than vertical permeability because of their pronounced lamination.<ref name=pt06r154>Weber, K. J., 1987, Computation of initial well productivities in aeolian sandstone on the basis of a geological model, Leman Gas field, U., K., in Tillman, R. W., Weber, K. J., eds., Reservoir Sedimentology: SEPM Special Publication 40, p. 335–354.</ref>

Eolian sandstones generally comprise excellent reservoir intervals but often possess complex [[porosity]] and [[permeability]] variations. They are commonly anisotropic with regard to the flow of fluids and exhibit greater horizontal than vertical permeability because of their pronounced lamination.<ref name=pt06r154>Weber, K. J., 1987, Computation of initial well productivities in aeolian sandstone on the basis of a geological model, Leman Gas field, U., K., in Tillman, R. W., Weber, K. J., eds., Reservoir Sedimentology: [https://members.sepm.org/iMISpublic/Core/Orders/Default.aspx? SEPM Special Publication 40], p. 335–354.</ref>

===Deltas===

===Deltas===