Ignimbrite consists mainly of glass fragments that were laid down when very hot, and partly welded together. In this piece of Ongatiti ignimbrite, small glass fragments are mixed with larger white crystals of quartz, which crystallised in the magma before it was ejected.
Te whakamahi i tēnei tūemi
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.
Tāpiritia te tākupu hou