Geological investigaions of Piip submarine volcano

G.A.Cherkashev VNIIoceangeologiyaRussian Ministry of Natural Resources

and geological team

140°E

140°E50°N

50°N

60°N

60°N

70°N

70°N

160°E

160°E

180°

180°

160°W

160°W

Беринговоморе

Полигон АВулкан Пийпа

Чукотскоеморе

Ном

Охотскоеморе п-

овКамчатка

Methods

• side scan, geoacoustic profilograph, STD and methane zond – 3 profiles;

• acoustic sounding of bottom and water column (9 profiles);

• determination of mercury in the air (9 profiles) and water (any stations);

• sampling rocks and sediments by drag, grab and cores (11 stations).

Scheme of side-scan profiling

Side scan and depressor on the deck of the RV “Professor Khromov”

Scheme of organic matter of sediment samples investigation

Location of rock and sediment

sampling stations

• 1 - sediment cores• 2 – CTD stations• 3 – drag sampling

A03

A04A05a

A05bA05c

A07

A08

A09

A10

A11

A12

A13

167.18 167.2 167.22 167.24 167.26 167.28 167.3 167.32 167.3455.34

55.36

55.38

55.4

55.42

55.44

55.46

1 2 3

167°13’

167°13’

55°2

1’

55°2

1’

55°2

3’

55°2

3’

55°2

5’

55°2

5’

55°2

5’

55°2

5’

167°15’

167°15’

167°17’

167°17’

167°19’

167°19’

1

2

34

5

6

789

10

11

Side-scan profiles

Profile through north pike of volcano by high frequency geoacoustic profilograph

Side-scan images of volcano surface

HydroacousticHydroacoustic images of water column and gas flare above images of water column and gas flare above hydrothermal vent of North Pike ofhydrothermal vent of North Pike of PiipPiip Submarine VolcanoSubmarine Volcano

Sample of dredged rocks: fresh andesite fragment

Fragment of black andesite (A05b)

Fragment of dacite pumice (A11)

View and magnetic susseptibility of core A08

Red arrow – location of volcanic ash layer

Magnetic susseptibility

S ea S tation S ample Al, % Ca , % Fe , % Mn, % Co Cu Mo Ni Pt V Zn A02 pumice 4,36 1,88 2,14 0,13 26 71 2 33 0,26 65 67

A07/1 calcareous concretion 4,25 23,62 3,39 0,11 11 119 6 29

244 95

S ubma rine P iip

Volcano

A09

Hydrothe rmally changed andes ite 7,38 3,78 7,39 0,11 23 859 24

476 147Chukchi S ea 065B Fe-Mn nodules 2,37 2,18 17,07 14,35 302 25 179 142

1,46 382 342

Chemical composition of some rock and mineral samples

A02

A07A09 062B

Electron microscope (SEM) images of sulfide minerals from calcareous concretion

(A07 station)

sulfides

Thank you