IEDA: Marine Geoscience Data System IEDA
KNOX11RR Station:Bottom:Towed Information
Hilton, David
Investigator
SIO
Platform
Roger Revelle
Ship
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Station Information

Devices

Related Data Sets

Station Information

Total Station Count: 37
Events

D-01
Start
66.65° E 16.7083° S
2007-11-11T15:36:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
66.6524° E 16.7123° S
2007-11-11T16:59:00
Nav Type
GPS
Details
Tectonic setting = ridge axis: ridge crest. Dredge content = sheet flow with glass. >100 pieces triaged into 5 samples for study

D-02
Start
66.8333° E 17.0138° S
2007-11-11T22:29:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
66.8208° E 17.002° S
2007-11-12T02:46:00
Nav Type
GPS
Details
Tectonic setting = fracture zone: inside corner high. Dredge content = Gabbro, harzburgite, pyroxenite. 22 samples for study

D-03
Start
66.8782° E 16.9552° S
2007-11-12T07:42:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
66.883° E 16.955° S
2007-11-12T09:21:00
Nav Type
GPS
Details
Tectonic setting = ridge axis: neovolcanic zone. Dredge content = 15 grams of basaltic glass shards+.

D-04
Start
66.1281° E 18.003° S
2007-11-13T02:55:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
66.1329° E 18.0031° S
2007-11-13T04:28:00
Nav Type
GPS
Details
Tectonic setting = seamount: midslope. Dredge content = (Mn-coated) pillow basalt fragments. 13 samples selected for study

D-05
Start
65.8972° E 18.1112° S
2007-11-13T10:30:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
65.9028° E 18.108° S
2007-11-13T11:06:00
Nav Type
GPS
Details
Tectonic setting = seamount: midslope. Dredge content = Vesicular Basalt/Mn-Crust. 4 (2 basalts/2 mn-crust) selected for study

D-06
Start
65.6805° E 18.3612° S
2007-11-13T15:18:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
65.6872° E 18.3575° S
2007-11-13T17:27:00
Nav Type
GPS
Details
Tectonic setting = seamount: coll either side of smt. Dredge content = Mn-Coated Basalt + Gl. 2 Samples selected for study

D-07
Start
65.4383° E 18.2067° S
2007-11-13T18:44:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
65.7362° E 18.3392° S
2007-11-14T21:20:00
Nav Type
GPS
Details
Tectonic setting = seamount: midslope. Dredge content = few glass shards. Some glass fragments selected for study

D-08
Start
65.1416° E 18.0502° S
2007-11-14T01:48:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
65.1423° E 18.0547° S
2007-11-14T03:49:00
Nav Type
GPS
Details
Tectonic setting = ridge axis: ridge crest. Dredge content = pillow fragments with very fresh glass. 4 samples selected for study

D-09
Start
65.2082° E 18.1335° S
2007-11-14T07:56:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
65.2163° E 18.1312° S
2007-11-14T10:20:00
Nav Type
GPS
Details
Tectonic setting = ridge axis: ridge crest. Dredge content = pillow fragments with very fresh glass. 6 samples selected for study

D-10
Start
66.3249° E 20.1585° S
2007-11-15T03:11:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
66.3297° E 20.1585° S
2007-11-15T04:27:00
Nav Type
GPS
Details
Tectonic setting = ridge axis: ridge crest. Dredge content = pillow fragments with very fresh glass. 27 samples selected for study

D-11
Start
66.2762° E 20.0673° S
2007-11-15T07:20:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
66.2794° E 20.0684° S
2007-11-15T09:56:00
Nav Type
GPS
Details
Tectonic setting = ridge axis: ridge crest. Dredge content = glass fragments. only ~4grams for glass/basalt fragments

D-12
Start
66.2702° E 20.0667° S
2007-11-15T12:19:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
66.2694° E 20.0667° S
2007-11-15T16:36:00
Nav Type
GPS
Details
Tectonic setting = ridge axis: ridge crest. Dredge content = pillow fragments with very fresh glass.

D-13
Start
66.2402° E 19.9848° S
2007-11-15T17:36:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
66.245° E 19.985° S
2007-11-15T22:20:00
Nav Type
GPS
Details
Tectonic setting = ridge axis: ridge crest. Dredge content = pillow fragments with very fresh glass.

D-14
Start
66.1665° E 19.9055° S
2007-11-15T23:38:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
66.1713° E 19.9055° S
2007-11-16T02:22:00
Nav Type
GPS
Details
Tectonic setting = ridge axis: ridge crest. Dredge content = pillow fragments with very fresh glass. 11 samples selected for study

D-15
Start
66.0101° E 19.757° S
2007-11-16T05:45:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
66.0148° E 19.755° S
2007-11-16T08:22:00
Nav Type
GPS
Details
Tectonic setting = ridge axis: ridge crest. Dredge content = pillow fragments with very fresh glass. 8 samples selected for study

D-17
Start
65.88° E 19.6133° S
2007-11-16T12:32:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
65.8848° E 19.6133° S
2007-11-16T14:01:00
Nav Type
GPS
Details
Tectonic setting = ridge axis: ridge crest. Dredge content = .

D-18
Start
65.8575° E 19.7229° S
2007-11-16T17:26:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
65.8623° E 19.7228° S
2007-11-16T18:37:00
Nav Type
GPS
Details
Tectonic setting = : ridge crest. Dredge content = .

D-19
Start
2007-11-16T20:13:00
Locale
CentralIndianRidge
SpreadingCenter
Nav Type
GPS
Details
13 samples selected for study

D-20
Start
65.4855° E 19.6797° S
2007-11-17T02:51:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
65.4897° E 19.6775° S
2007-11-17T04:06:00
Nav Type
GPS
Details
Tectonic setting = slope of ridge: ridge crest. Dredge content = ~150 kg of pillow fragments, coral fragments. 13 samples selected for study

D-21
Start
65.307° E 19.7046° S
2007-11-17T07:50:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
65.3098° E 19.7046° S
2007-11-17T08:42:00
Nav Type
GPS
Details
Tectonic setting = slope of ridge: ridge crest. Dredge content = empty!. dredge tangled up?

D-22
Start
64.9667° E 19.6167° S
2007-11-17T11:48:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.9713° E 19.6168° S
2007-11-17T14:52:00
Nav Type
GPS
Details
Tectonic setting = Ridge - GASPARD: 3 Magi Ridge. Dredge content = Single basalt with glass. 1 sample for study

D-23
Start
64.922° E 19.6758° S
2007-11-17T19:30:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.922° E 19.6758° S
2007-11-17T22:55:00
Nav Type
GPS
Details
Tectonic setting = Ridge - MELCHIOR: 3 Magi Ridge. Dredge content = Altered basalt minimal glass. 2 Samples selected for study

D-24
Start
64.9455° E 19.6668° S
2007-11-18T00:24:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.95° E 19.6682° S
2007-11-18T23:40:00
Nav Type
GPS
Details
Tectonic setting = Ridge - MELCHIOR: 3 Magi Ridge. Dredge content = Altered basalt minimal glass. 2 Samples selected for study

D-25
Start
64.8448° E 19.5853° S
2007-11-18T01:56:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.8494° E 19.5869° S
2007-11-18T03:41:00
Nav Type
GPS
Details
Tectonic setting = Ridge - Balthazar: 3 Magi Ridge. Dredge content = assorted, old, Mn-coated, Fe-oxide stained pillow lavas. 6 samples selected for study

D-26
Start
64.7147° E 19.6159° S
2007-11-18T06:41:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.719° E 19.6182° S
2007-11-18T08:01:00
Nav Type
GPS
Details
Tectonic setting = Ridge - Balthazar : 3 Magi Ridge. Dredge content = 2 large (old, Mn-coated) pillow fragments, smaller pillow. 3 samples selected for study

D-27
Start
64.4418° E 19.5834° S
2007-11-18T19:50:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.4453° E 19.5833° S
2007-11-18T21:52:00
Nav Type
GPS
Details
Tectonic setting = Ridge - Rodrigues: Rodrigues Ridge. Dredge content = empty!. dredge hung up! Chain damaged!

D-28
Start
64.4417° E 19.5833° S
2007-11-18T23:43:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.4415° E 19.5878° S
2007-11-19T02:11:00
Nav Type
GPS
Details
Tectonic setting = Ridge - Rodrigues: Rodrigues Ridge. Dredge content = empty!. few grams of sand, coral fragments

D-29
Start
64.2933° E 19.6033° S
2007-11-19T04:30:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.2933° E 19.6034° S
2007-11-19T07:56:00
Nav Type
GPS
Details
Tectonic setting = Ridge - Rodrigues: Rodrigues Ridge. Dredge content = 2kg of polymict breccia. dredge hung up! 2 weak links busted

D-30
Start
64.075° E 19.6417° S
2007-11-19T11:20:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.0787° E 19.6445° S
2007-11-19T13:04:00
Nav Type
GPS
Details
Tectonic setting = Ridge - Rodrigues: Rodrigues Ridge. Dredge content = 8kg of alttered pillow basalt. no pinger on wire!

D-31
Start
63.75° E 19.45° S
2007-11-21T20:18:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
63.7548° E 19.45° S
2007-11-21T21:47:00
Nav Type
GPS
Details
Tectonic setting = Ridge - Rodrigues: Rodrigues Ridge. Dredge content = 1 piece (250g) of basalt.

D-32
Start
63.7553° E 19.45° S
2007-11-21T23:55:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
63.7595° E 19.4498° S
2007-11-22T01:17:00
Nav Type
GPS
Details
Tectonic setting = Ridge - Rodrigues: Rodrigues Ridge. Dredge content = 50g of small fragments of Mn-crust.

D-33
Start
64.1102° E 19.4683° S
2007-11-22T05:13:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.115° E 19.4667° S
2007-11-22T06:23:00
Nav Type
GPS
Details
Tectonic setting = Ridge - Rodrigues: Rodrigues Ridge. Dredge content = 10g of Mn-crust.

D-34
Start
64.1383° E 19.4598° S
2007-11-22T09:00:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.1423° E 19.4598° S
2007-11-22T10:32:00
Nav Type
GPS
Details
Tectonic setting = Ridge - Rodrigues: Rodrigues Ridge. Dredge content = 30kg of old pillow fragments. dredge hung up - moved ship backwards

D-35
Start
64.1332° E 19.7917° S
2007-11-22T14:36:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.138° E 19.7917° S
2007-11-22T15:56:00
Nav Type
GPS
Details
Tectonic setting = Ridge - Rodrigues: Rodrigues Ridge. Dredge content = empty!.

D-36
Start
64.1898° E 19.81° S
2007-11-22T19:10:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.1943° E 19.8117° S
2007-11-22T20:37:00
Nav Type
GPS
Details
Tectonic setting = Ridge - Rodrigues: Rodrigues Ridge. Dredge content = 1 piece (200g) of altered basalt.

D-37
Start
64.2915° E 20.048° S
2007-11-23T00:21:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
64.283° E 20.0478° S
2007-11-23T02:54:00
Nav Type
GPS
Details
Tectonic setting = Abyssal Hill: S of Rodrigues Ridge. Dredge content = 3.5kg of altered basalt and glass. moved ship 500m+250m

D-38
Start
62.3667° E 20.35° S
2007-11-23T16:54:00
Locale
CentralIndianRidge
SpreadingCenter
Stop
62.37° E 20.3467° S
2007-11-23T18:30:00
Nav Type
GPS
Details
Tectonic setting = Seamount: . Dredge content = 3 pieces of basalt.

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