Chert

Photographed by Michael P. Klimetz

Rhynie Chert

Silurian

Aberdeenshire

SCOTLAND

Photographed by Michael P. Klimetz

Ferruginous Radiolarian Chert

[With Psilomelane]

Late Jurassic-Early Cretaceous

Julierpass

Kanton Graubuenden

SWITZERLAND

Photographed by Michael P. Klimetz

Ferruginous Radiolarian Chert

[With Psilomelane]

Late Jurassic-Early Cretaceous

Julierpass

Kanton Graubuenden

SWITZERLAND

Photographed by Michael P. Klimetz

Nodule Coated with Chalk

Cretaceous

Dover

Kent

UNITED KINGDOM

Photographed by Michael P. Klimetz

Nodule Coated with Chalk

Cretaceous

Dover

Kent

UNITED KINGDOM

Photographed by Michael P. Klimetz

Nodule Coated with Chalk

Cretaceous

Dover

Kent

UNITED KINGDOM

Photographed by Michael P. Klimetz

Nodule Coated with Chalk

Cretaceous

Dover

Kent

UNITED KINGDOM

Photographed by Michael P. Klimetz

Ferruginous Radiolarian Chert

Jurassic

Franciscan Formation

Santa Cruz Island

Santa Barbara County

CALIFORNIA

Photographed by Michael P. Klimetz

Ferruginous Radiolarian Chert

Jurassic

Franciscan Formation

Santa Cruz Island

Santa Barbara County

CALIFORNIA

Photographed by Michael P. Klimetz

Ferruginous Radiolarian Chert

Jurassic

Franciscan Formation

Santa Cruz Island

Santa Barbara County

CALIFORNIA

Photographed by Michael P. Klimetz

Ferruginous Radiolarian Chert

Jurassic

Franciscan Formation

Santa Cruz Island

Santa Barbara County

CALIFORNIA

Photographed by Michael P. Klimetz

Flint

[Nodule Coated with Chalk]

Cretaceous

Dover

Kent

UNITED KINGDOM

Photographed by Michael P. Klimetz

Flint

[Nodule Coated with Chalk]

Cretaceous

Dover

Kent

UNITED KINGDOM

Photographed by Michael P. Klimetz

Flint

[Nodule Coated with Chalk]

Cretaceous

Dover

Kent

UNITED KINGDOM

Photographed by Michael P. Klimetz

Flint

[Nodule Coated with Chalk]

Cretaceous

Dover

Kent

UNITED KINGDOM

Photographed by Michael P. Klimetz

Flint

[Nodule Coated with Chalk]

Cretaceous

Dover

Kent

UNITED KINGDOM