Baltra

Floreana

Santa Cruz

Santiago

Isabela

San Cristobal

Española

Santa Fé

Genovesa

Rábida

Pinzón

Pinta

Marchena

Fernandina

GAL36

GAL53

GAL54

GAL56

GAL6

GAL17

GAL3GAL15

GAL147

FL8

GAL72GAL155

FL6

Fl7

GAL197GAL70

GAL69GAL162

GAL172

GAL183

Floreana

Santa Cruz San Cristobal

Santa Fé Rábida

SCR2

SCR5 GAL40SCR3

GAL29BGAL28

GAL30

GAL120GAL122

GAL43GAL43

GAL47GAL48

GAL230

A

B C

FED

Figure S1. Rojas-Agramonte et al.,

Nazca Plate(3.7 cm/yr)

Sand sample location

Location of plume at 200 km depth

(Villagomez et al., 2014)

Rock sample location

GAL45a

Supplementary Figure S1. The Galápagos Archipelago showing sample locations in the islands containing zircon grains and present position of the plume at 200 km depth. A) Beach sand sample GAL38 at Pinzón, was collected at the same location as sample GAL36