Changes

==Sediment composition and provenance==

==Sediment composition and provenance==

Provenance determines sand grain mineralogy and sediment maturity. Mechanical and chemical weathering affects sand grains during transportation. The final product reflects the origin, amount of reworking, and transport distance.

Provenance determines sand grain mineralogy and sediment maturity. Mechanical and chemical weathering affects sand grains during transportation. The final product reflects the origin, amount of reworking, and transport distance.

For example, sandstones derived from subduction trench margins are generally mineralogically immature. They often contain terrigenous detritus with abundant volcaniclastics and pelagic material. Sandstones derived from the margin of a cratonic basin tend to be mineralogically and texturally mature and contain reworked sedimentary detritus.

For example, sandstones derived from subduction trench margins are generally mineralogically immature. They often contain terrigenous detritus with abundant volcaniclastics and pelagic material. Sandstones derived from the margin of a cratonic basin tend to be mineralogically and texturally mature and contain reworked sedimentary detritus.

[[:file:predicting-reservoir-system-quality-and-performance_fig9-47.png|Figure 1]] summarizes the effects of sediment composition on mechanical stability and chemical stability.

 

[[file:predicting-reservoir-system-quality-and-performance_fig9-47.png|thumb|{{figure number|9-47}}.]]

==Influence of grain size on porosity and diagenesis==

==Influence of grain size on porosity and diagenesis==