| IGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
|---|---|---|---|---|---|
| GRD00JGS0 | Sheet Flow | 8 cm thick curved sheet flow. Glass on both margins | Pacific Ocean | 0 | Ritter 154, 16 I |
| GRD042SS0 | Sheet Flow | thick (5 mm) glassy rind, bluish (intersertal) texture on base | 0 | Ritter 154, 16 Q | |
| GRD042TS0 | Sheet Flow | aphyric sheet flow with glassy drain back features on base | Pacific Ocean | 0 | Ritter 154 |
| GRD042US0 | Sheet Flow | plag-phyric sheet flow | Pacific Ocean | 0 | Ritter 154 |