Page 47 - Carbonate Sedimentology and Sequence Stratigraphy

38 WOLFGANG SCHLAGER

cle porosity and vuggy porosity. Interparticle porosity is the subdivides vuggy pores into separate vugs that are only
space between depositional grains or crystals. Interparticle connected via interparticle pores, and touching vugs that
porosity is directly related to depositional texture or to crys- form a connected pore system.
tal texture where diagenesis has obscured the depositional Choquette and Pray (1970) proposed a genetic classifica-
fabric, such as in dolomites and severely recrystallized lime- tion system of porosity. Pores are subdivided according to
stones. Vuggy porosity represents all pore space that is not their origin, analogous to recognizing grain kind in sedi-
of the interparticle type. This includes pores within grains ment. This classification is particularly useful for recogniz-
or crystals, pores significantly larger than grains or crystals, ing the origin of porosity and reconstructing the sequence of
large irregular cavities and, finally, fractures. Lucia (1995) diagenetic events.