| |
| | MBARI - Mapping Program - West Coast Seamounts and Ridges Multibeam Survey |
 | | Gumdrop, Pioneer, and Guide Seamounts are located about 120 kilometers off the California margin, north of Monterey Bay. |
 | | Gumdrop, the northernmost of the three seamounts, has a series of aligned cones separated by sediment-filled troughs, but these structures are poorly defined. |
 | | Samples recovered from Gumdrop are highly vesicular, alkalic basalt, hawaiite, and mugearite, but their age is not determined. |
| www.mbari.org /data/mapping/seamounts/guide2gumdrop.htm (272 words) |
|