Non-Skeletal Grain types

Pisoids

1. Pisoids

Pisoid formed by thin micritic concentric laminae around an intraclast, possibly formed in a subtidal to intertidal environment.

Permian, Capitan Reef, New Mexico, USA

HIDE INFO

SHOW INFO

2. Pisoids

Regular concentric laminae, first hyaline and then dark micritic.

Lower Jurassic, High Atlas, Morocco, cf. Verwer et al. (2009a)

HIDE INFO

SHOW INFO

3. Pisoids

Grainstone with pisoidal coating around intraclasts and fenestral porosity (keystone vugs) in intertidal environment.

Lower Jurassic, High Atlas, Morocco, cf. Verwer et al. (2009a)

HIDE INFO

SHOW INFO

4. Pisoids

Grain- to packstone containing pisoids and an intraclast of pisoidal packstone with meniscus micrite binding deposited in intertidal to vadose setting.

Lower Jurassic, High Atlas, Morocco, cf. Verwer et al. (2009a), Merino-Tome' et al. (2012)

HIDE INFO

SHOW INFO

5. Pisoids

Pisoidal grainstone with meniscus micrite cement in intertidal to vadose conditions.

Lower Jurassic, High Atlas, Morocco, cf. Verwer et al. (2009a), Merino-Tome' et al. (2012)

HIDE INFO

SHOW INFO

6. Vadose Pisoids

Grainstone to packstone consisting of vadose pisoids bound by micritic meniscus cement.

Lower Mississippian, Shunda Formation, Alberta, Canada

HIDE INFO

SHOW INFO

pisoidal coating

peloidal intraclast at nucleus

pisoidal coating

pisoid

pisoid

intraclast of pisoidal packstone

pisoid

vadose meniscus micrite

Pisoids

CLOSE

pisoidal coating

peloidal intraclast at nucleus

pisoidal coating

pisoid

pisoid

intraclast of pisoidal packstone

pisoid

vadose meniscus micrite