GEOROC Sample Information
Location
Latitude 32.75 | Longitude -17
MADEIRA ARCHIPELAGO / MADEIRA
OCEAN ISLAND
Reference
FERREIRA M. P.,MACEDO R.,COSTA V. S.,REYNOLDS J. H.,RILEY J. E. JR.,ROWE M. W.
RARE-GAS DATING II: ATTEMPTED URANIUM-HELIUM DATING OF YOUNG VOLCANIC ROCKS FROM THE MADEIRA ARCHIPELAGO
EARTH PLANET. SCI. LETT. 25 [1975] 142-150
Sample Name: MAD-8
Sample Information
ALKALI BASALT, OLIVINE / INTERGRANULAR GROUNDMASS TEXTURE
OUTCROP
Sample Age Information
No sample age information given.
Chemistry (and, if given, analytical ages)
Analyzed: WHOLE ROCK
| AGE | 1.04 MA |
| AGE | 1.61 ± 0.04 MA |
| HE4 | 0.0000002297 CCMSTP/G |
| U | 1.02 PPM |
Analyzed: WHOLE ROCK
| AGE | 1.01 MA |
| HE4 | 0.0000002231 CCMSTP/G |
Analyzed: WHOLE ROCK
| AGE | 1.01 MA |
| HE4 | 0.0000002236 CCMSTP/G |