GRD003YS0
I-150
Basalt
Cenozoic › Quaternary
0.01
-
2.6
0
Ritter 154 › Cabinet 20 › Drawer E
Pyroxene,Olivine,Porphyritic
-
-
Tristan Da Cunha
Tristan da Cunha: flow or large sill half way between Big Point and Rookery Point, elev 10