TY  - SER
AU  - Henderson,William
TI  - Cretaceous to Eocene volcanic are activity in the Andes of Northern Ecuador
KW  - Volcanisme
KW  - Crétacé
KW  - Tertiaire inf
KW  - Géochronologie
KW  - K-Ar
KW  - Equateur
N1  - <Donation ORSTOM>; bibliogr. p. 378
ER  -