A conglomerate of well rounded and well sorted volcanic clasts, is mature indicating transport

Well cemented glassy fragments with vescicules

A conglomerate of angular and poorly sorted volcanic clasts, is immature indicating no transport

Basaltic lavas highly oxidised

These are humid environments at high latitudes with isolation of water bodies (lagoons, continental basins)

These are dry environments at low latitudes with isolation of water bodies (lagoons, continental basins)

These are dry environments at any latitude dominated by meandering rivers 

None of the above

These are humid environments at any latitude with lagoons and continental basins

explosive and effusive

fall, surge and flow

Tuff, ash and lapilli

pyro-, auto- and eplicastics

If a fragment of rock is incorporated into another rock, it is younger than the surrounding rock.

If a fragment of rock is incorporated into another rock, it is older than the surrounding rock.

If a fragment of rock is incorporated into another rock, it is of no geological significance. 

If a fragment of rock is incorporated into another rock, it is an indication of metamorphosis

If a fragment of rock is incorporated into another rock, it must be the result of a later intrusion.

Easily identified in the field (outcrop) or well

All of the above

Wide geographic distribution

Short geologic time range

Alluvial fan

Tropical lagoon

Tropical fore-reef

Temperate fore-reef

Below the CCD

are physically weak, and cannot withstand long periods of sustained reworking

commonly show textural features of the source rock, like foliations and bedding

are only derived from sedimentary rock sources

are the most reliable framework grains for determining provenance