Page 107 - Carbonate Facies in Geologic History

94 Outline of Carbonate Petrography

BASIC POROSITY TYPES
FABRIC SELECTIVE I I NOT FABRIC SELECTIVE I

~ BP
INTERPARTICLE
fRACTURE
INTRAPARTICLE WP ~ FR
III INTERCRYSTAL Be CHANNEL- CH

[ri] MOLDIC MO VUG· VUG

~
..L.--_
e FENESTRAL SK CAVERN • cv
FE
"-
SHELTER
GROWTH- Gf ·Cavern appliH fO than ·ltUd Qr laro-r por •• of
fRAMEWORK eMnn.1 or VUQ shOp ..
SELECTIVE OR NOT I
I FABRIC

~BRECCIA ~BORING I1J-rl BURROW SHRINKAGE
~ ~BO ~BU SK
BR

MOOIF"YING TERMS
GENETIC MODIFIERS SIZE- MODIFIERS
I PROCESS I I DIRECTION OR STAGE I CLASSES mm'
Z56-
large Img
SOLUTION s ENLARGEO I MEGAPORE IIIg small SIIIg 3Z-
CEMENTATION c REDUCED r Ims 4 -
INTERNAL SEDIMENT i FILLED f MESOPORE ms 1"'9' 112-
small sms 1/16-
I TIME OF FORMATION I MICROPOOE me
PRIMARY P Use I,lf! Ql't.hIU _"hi botic poro.ll, l,pcl!
p<e-depasilionol Pp melo'lluq m.VUG
"".Ma
IlftOII rMlOmOld
depositional Pd f'F'IlCrOll'ltlfportlcle mcBP
SECONDARY S · FOf "9ufo,·IohOPtrS porn small.r Inon COyet" IllI.
e~ .. lic So f MIOII.II" 'e',r 10 overoo_ pori dleHnilf., o' Q
mnogenelic SIn '"''!q1. DOff: 01 1M ro"'i' In ItI:e of., ~Jt 01o.Mm.bIoge
F'Or lubulor potU uUl ove,oO' crall" Mchan.. Fot
Itlo9l .. lic SI ~I,. poor" uU ..ctl" and noll Iha~l .
ABUNDANCE MODIFIERS
Genelle ftIOd,to." ore CIOIIIbined as 10110 •• :
Pf'eenl pMo .. l, (15"4)
IPROCESsl • IDIRECTIONI + ITi ME I
Or
EXAMPLES: ",Iuhoft -enlarged sa rOlio 01 poro .. l, Ilpn (I ,l)
tomenl- r.duced puma" erP or
sed,mtnl -1,IIed to\ItMlic KS. ralio and percenl o ZI 05"4)