Shrinkage (Dessication) Cracks
Photograph Courtesy of the British Geological Survey


[Devonian]

Old Red Sandstone

Thurso

SCOTLAND
Photographed by Michael P. Klimetz


[In Mudstone]


Early Permian
El Pueblo Tracksite

NEW MEXICO
Photographed by Michael P. Klimetz


[In Mudstone]


Norian-Triassic
Passaic Formation
Newark Group

NEW JERSEY
Photographed by Michael P. Klimetz


[In Mudstone]


Norian-Triassic
Passaic Formation
Newark Group

NEW JERSEY
Photographed by Michael P. Klimetz


[In Mudstone]


Norian-Triassic
Passaic Formation
Newark Group

NEW JERSEY
Photographed by Michael P. Klimetz


[In Mudstone]


Norian-Triassic
Passaic Formation
Newark Group

NEW JERSEY
Photographed by Michael P. Klimetz


[In Mudstone]


Norian-Triassic
Passaic Formation
Newark Group

NEW JERSEY