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===Carbonate pore systems===
 
===Carbonate pore systems===
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In comparison to clastic pore systems, pore types in carbonate rocks are more varied (see [[Carbonate reservoir models: facies, diagenesis, and flow characterization]]). Three basic pore groups can be recognized:<ref name=pt05r34>Choquette, P. W., Pray, L. C., 1970, [http://archives.datapages.com/data/bulletns/1968-70/data/pg/0054/0002/0200/0207.htm Geological nomenclature and classification of porosity in sedimentary carbonates]: AAPG Bulletin, v. 54, p. 207–250.</ref> fabric selective, not fabric selective, and fabric selective or not (Table 1 and [[:file:porosity_fig3.png|Figure 3]]). Seven porosity types (interparticle, intraparticle, intercrystal, moldic, fenestral, fracture, and vugs) are common and volumetrically important.
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In comparison to clastic pore systems, pore types in carbonate rocks are more varied (see [[Carbonate reservoir models: facies, diagenesis, and flow characterization]]). Three basic pore groups can be recognized:<ref name=pt05r34>Choquette, P. W., Pray, L. C., 1970, [http://archives.datapages.com/data/bulletns/1968-70/data/pg/0054/0002/0200/0207.htm Geological nomenclature and classification of porosity in sedimentary carbonates]: AAPG Bulletin, v. 54, p. 207–250.</ref> fabric selective, not fabric selective, and fabric selective or not (Table 1 and [[:file:porosity_fig3.png|Figure 3]]). Seven porosity types (interparticle, intraparticle, intercrystal, moldic, fenestral, [[fracture]], and vugs) are common and volumetrically important.
    
{| class = "wikitable"
 
{| class = "wikitable"
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| colspan = 2 align=middle | ''' Not fabric selective '''
 
| colspan = 2 align=middle | ''' Not fabric selective '''
 
|-
 
|-
| Fracture || Porosity formed by fracturing
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| [[Fracture]] || Porosity formed by fracturing
 
|-
 
|-
 
| Channel || Markedly elongate pores
 
| Channel || Markedly elongate pores
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