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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Unnamed
A plume and discolored water from a submarine eruption were observed in January 1999. This unnamed submarine volcano, 35 km NW of the Niu Aunofo lighthouse on Tongatapu Island, was constructed at the southern end of a submarine ridge segment of the Tofua volcanic arc extending NNE to Falcon Island. The first documented eruptions took place in 1911 and 1923. An ephemeral island was formed during this eruption in 1999; prior to this the summit was 13 m beneath the sea surface. Photo by B. Hutchins, 1999 (published in Taylor, 1999).
Volcano Number:
243030
Volcano Name:
Unnamed
Country:
Tonga
Volcano Type:
Submarine
Last Eruption:
2017 CE
Elevation:
-296m
Tectonic Setting:
Subduction zone / Oceanic crust (< 15 km)
Pop. within 5km:
0
Pop. within 10km:
0
Pop. within 30km:
0
Pop. within 100km:
88571
Latitude:
-20.852
Longitude:
-175.55
Details
Download XLS
Eruption Data from the Global Volcanism Program of the Smithsonian Institution
Volcano Number
Volcano Name
Eruption Number
Activity Type
Explosivity Index Max
Explosivity Index Modifier
Activity Area
Activity Unit
Start Evidence Method
Start Date
End Date
243030
Unnamed
14727
Confirmed Eruption
0
Historical Observations
1911
243030
Unnamed
14728
Confirmed Eruption
0
Historical Observations
1923/7/1
243030
Unnamed
14729
Confirmed Eruption
1
Historical Observations
1999/1/8
1999/1/14
243030
Unnamed
14743
Uncertain Eruption
0
Historical Observations
1970/1/3
1970/1/3
243030
Unnamed
22185
Confirmed Eruption
0
Historical Observations
2017/1/23
2017/1/31
Emissions Data from the Global Volcanism Program of the Smithsonian Institution
Sorry. No emissions data found for this volcano.
Abstract
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Data from the Earthchem Library
Sorry. No data exist for this volcano in the EarthChem Library.
Data from the Earthchem Portal
Show 3 Results
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Sample ID
LINK
Source
DB
Method
Material
Rock Class
Rock Name
SiO
2
WT%
TiO
2
WT%
Al
2
O
3
WT%
Fe
2
O
3
WT%
Fe
2
O
3
Total
WT%
FeO
WT%
FeO Total
WT%
MnO
WT%
MgO
WT%
CaO
WT%
Na
2
O
WT%
K
2
O
WT%
P
2
O
5
WT%
LOI
WT%
H
2
O
WT%
Total
WT%
Ag
PPM
As
PPM
Ba
PPM
Be
PPM
Bi
PPM
Co
PPM
Cr
PPM
Cs
PPM
Cu
PPM
Dy
PPM
Ga
PPM
ge
PPM
In
PPM
Mo
PPM
Nb
PPM
Ni
PPM
Pb
PPM
Rb
PPM
Sb
PPM
Sc
PPM
Sn
PPM
Sr
PPM
Ti
PPM
U
PPM
V
PPM
W
PPM
Y
PPM
Zn
PPM
Zr
PPM
87
Sr /
86
Sr
RATIO
87
Rb /
86
Sr
RATIO
143
Nd /
144
Nd
RATIO
147
Sm /
144
Nd
RATIO
E Nd
RATIO
206
Pb /
204
Pb
RATIO
207
Pb /
204
Pb
RATIO
208
Pb /
204
Pb
RATIO
208
Pb /
206
Pb
RATIO
176
Hf /
177
Hf
RATIO
176
Lu /
177
Hf
RATIO
187
Re /
188
Os
RATIO
187
Re /
186
Os
RATIO
187
Os /
188
Os
RATIO
187
Os /
186
Os
RATIO
186
Os /
188
Os
RATIO
184
Os /
188
Os
RATIO
10
Be / Be
RATIO
10
Be /
9
Be
RATIO
206
Pb /
207
Pb
RATIO
ND-03-01 (G)
DETAILS
TIMS_N
Rock
Igneous Unknown Volcanic
Not-given
0.1342
LC-A-5
DETAILS
ICPAES
Rock
Igneous Intermediate Volcanic
Boninite
54.5
0.44
15.83
2.05
7.38
0.17
5.42
10.45
1.44
0.4
0.1
98.18
139
116
22
152
13
10.9
LC-A-5
DETAILS
ICPMS
Rock
Igneous Intermediate Volcanic
Boninite
0.46
0.46
139
0.209
33
97.1
0.312
124
2.06
13.9
0.177
27.7
1.27
6.62
40.9
162
0.094
296
13.2
84.1
19.8
Data from the SESAR Database
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IGSN
Object Name
Object Type
Object Class
Material
Field Name
Link
TAP00005O
ND-05-01
Dredge
Rock>Igneous>Volcanic>Mafic
Basaltic Andesite
Details
TAP00005L
ND-01-01
Dredge
Rock>Igneous>Volcanic>Mafic
Basalt
Details
TAP00005M
ND-02-01
Dredge
Rock>Igneous>Volcanic>Mafic
Basaltic Andesite
Details
Data from the MaGa Database
Sorry. No data exist for this volcano in the MaGa database.