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-1B-M

Sample Information

BASALT, ALKALINE, OLIVINE / INTERGRANULAR GROUNDMASS TEXTURE
OUTCROP

Sample Age Information

No sample age information given.

Chemistry (and, if given, analytical ages)

Analyzed: WHOLE ROCK

AGE0.68 MA
AGE1.2 ± 0.06 MA
HE40.0000001666 CCMSTP/G
U1.13 PPM

Analyzed: WHOLE ROCK

AGE0.7 MA
HE40.0000001723 CCMSTP/G