CLSC, southern plumes on CL6

Name Alias(es):

MGDS_FeatureID lowest in hierarchy:

Lau

Vent Sites:

Activity:

active, inferred

Maximum Temperature:

Latitude:

-18.5000

Longitude:

-176.3833

Location on map:

Ocean:

S. Pacific

Region:

Lau Basin

National Jurisdiction:

Tonga

Maximum or Single Reported Depth (mbsl):

2250

Minimum Depth (mbsl):

Tectonic setting:

back-arc spreading center

Full Spreading Rate (mm/a):

87.9

Volcano Number (if applicable):

Host Rock:

NotProvided

Deposit Type:

NotProvided

Notes on Vent Field Description:

depth approximate; Crowhurst et al. (2009): "new venting field discoveries at ...northern extent of the CLSC"; approx. position from Fig.3, targets generated by cruise SS02/2009 (http://www.marine.csiro.au/nationalfacility/voyagedocs/2009/MNF-SS2-09_sum.pdf)

Notes Relevant to Biology:

Year and How Discovered (if active, visual confirmation is listed first):

2009 plume only

Discovery References (text):

Cruise SS02/2009: Hydrothermal plume and structural geology mapping in the Tonga/Fiji region (http://www.marine.csiro.au/nationalfacility/voyagedocs/2009/MNF-SS2-09_sum.pdf)

Crowhurst et al. (2009) Discovery of new hydrothermal venting sites in the Lau Basin, Tonga Back-Arc. AGU Fall Meeting abstract #OS13A-1180.

Other References (text):

[(Older reference for this area, Fe & Mn enriched sediments containing volcaniclastic material) Hodkinson & Cronan, Mar. Geol., 98, 353-366, 1991]

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