Examples of clast

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The reworked component includes red algal debris and clasts encrusted by bryozoans.
Large-scale bedding is picked out by changes in clast size throughout the unit.
More rarely clasts of streaky flow-banded or parataxitic material occur, derived from earlier welded tuffs.
At least two different groups of clasts may be identified based on grain morphology.
Clasts have cuspate, frittered edges with small clasts spalling from larger ones.
The major-element geochemistry confirms the very high levels of silica in all the clasts analysed, and their general granitic nature.
However, granitoid clasts are common to the south and there are some crystal-tuff clasts near the apparent base of this unit.
Dolomitic clasts have shape ratios typically 10 to 15 times higher than granite clasts.
Several centimetres of wave-rippled sandstone with shale clasts cap most channellized sandstones.
Concentrations of pumice clasts towards the base form trains of clasts that are traceable along the length of outcrops.
The second plot shows directions of high blocking temperature components also recovered in some clasts.
Sample components from the same clast are enclosed.
The clast infill of the veins always closely matches the wallrock.
These conglomerates are composed of clasts of basalt, volcaniclastic sandstone, alkaline lava and sub-rounded chert.
Strong local variations are apparent in clast size, degree of cohesive flow transport and content of marble clasts relative to pelitic or psammitic clasts.

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