Galapagos hydrothermal mounds: stratigraphy and chemistry revealed by deep-sea drilling.
The Galápagos mounds sea-floor hydrothermal system is at least 300,000 years old and once produced manganese-poor sediments, which nearly blanketed the area of the present mounds field. Present-day mound deposits are limited manganese-rich exposures, suggesting that the system has changed from rock-to water-dominated and has diminished in intensity with time.
Natland
J H
JH
Rosendahl
B
B
Hekinian
R
R
Dmitriev
Y
Y
Fodor
R V
RV
Goll
R M
RM
Hoffert
M
M
Humphris
S E
SE
Mattey
D P
DP
Petersen
N
N
Roggenthen
W
W
Schrader
E L
EL
Srivastava
R K
RK
Warren
N
N