Carbonate Aquifers - Trace Fossils as Indicators of Sedimentary Environments - page 851

TABLE 1 Ichnogenic Macroporosity and Intrinsic Permeability Determined by Computer Methods (See Also Fig. 5 )

Sample
number

Volume of rendering
used in LBM (cm 3 )

Macroporosity derived
by pixel counting (%)

LBM-derived intrinsic
permeability (darcies)

Dominant
ichnotaxon Ichnofacies Age

SHR-1 a 10 6N

780 78 27 Ophiomorpha Skolithos P

ML-1 b 10 6H

759 64 1.9 Ophiomorpha Skolithos P

10 6V

3.7

C-100-Q5e-1 b 10 6H 731 50 1.3 Ophiomorpha Skolithos P

10 6V 2.1

G-3837-18 b 10 3H 319 29 15 Ophiomorpha Skolithos P

10 3V 31

G-3837-22 b 10 3H

319 29 220 Ophiomorpha Skolithos P

10 3V

160

10 6N

LTX-4 2014 31 5.6 Thalassinoides Cruziana C

10 6N

TXEA-1 2123 27 1.8 Thalassinoides Cruziana C

H, horizontal permeability; V, vertical permeability; N, orientation not determined; P, Pleistocene; C, Cretaceous; LBM, Lattice Boltzmann method.
a Cunningham and Sukop (2011) .
b Cunningham et al. (2009, 2010) .