Image
This close-up of the ignimbrite at Cathedral Cove shows that it is made of angular blocks of pumice in a fine-grained matrix of rhyolitic volcanic ash. The coin gives an idea of scale.
Te whakamahi i tēnei tūemi
Private collection
by Simon Nathan
This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.