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Shau, Yen-Hong; Torii, Masayuki; Horng, Chorng-Shern; Liang, Wen-Tzong (2004): (Table T1) Magnetic properties of MORB from ODP Leg 187 sites [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.780754, Supplement to: Shau, Y-H et al. (2004): Magnetic properties of mid-ocean-ridge basalts from Ocean Drilling Program Leg 187. In: Pedersen, RB; Christie, DM; Miller, DJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 187, 1-25, https://doi.org/10.2973/odp.proc.sr.187.204.2004

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Abstract:
The core samples of mid-ocean-ridge basalts (including Indian and Pacific type) recovered from the Southeast Indian Ridge (SEIR) area near the Australian Antarctic Discordance during Ocean Drilling Program Leg 187 were studied using rock magnetism, mineralogy, and petrography methods. On the basis of thermomagnetic analyses and low-temperature magnetometry, the dominant magnetic carrier in most of the basalt samples (pillow basalts) is characterized as titanomaghemite, which presumably formed by low-temperature oxidation of primary titanomagnetite. Some samples from unaltered massive basalts contain nearly unoxidized titanomagnetite as the main magnetic mineral. A metadiabase sample showing greenschist facies metamorphism contains magnetic minerals dominated by magnetite. The pillow basalts contain titanomaghemite ranging from stable single-domain to pseudosingle-domain (PSD) grains, and the majority are characterized by a single stable component of remanence. The massive basalts show hysteresis features of larger PSD grains and contain a very low coercivity remanence. The values of natural remanent magnetization (NRM) of the samples in this SEIR area are on the same order as those of other oceanic ridge basalts. They show a general decreasing trend of NRM with increasing crust age. However, the values of NRM show no correlation either with the tectonic zonations (Zone A vs. Zone B) or with the mantle provinces (Pacific vs. Indian types).
Project(s):
Coverage:
Median Latitude: -43.392231 * Median Longitude: 129.132310 * South-bound Latitude: -45.956700 * West-bound Longitude: 126.908300 * North-bound Latitude: -41.271510 * East-bound Longitude: 134.998350
Date/Time Start: 1999-08-12T23:30:00 * Date/Time End: 2000-01-06T09:00:00
Minimum Elevation: -5736.4 m * Maximum Elevation: -4354.0 m
Event(s):
187-1152A  * Latitude: -41.897930 * Longitude: 127.006710 * Date/Time Start: 1999-08-12T23:30:00 * Date/Time End: 1999-11-27T11:15:00 * Elevation: -5055.4 m * Penetration: 11.2 m * Recovery: 0.59 m * Location: Indian Ocean * Campaign: Leg187 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 1 core; 11.2 m cored; 0 m drilled; 5.3 % recovery
187-1152B  * Latitude: -41.897210 * Longitude: 127.007580 * Date/Time Start: 1999-11-27T11:15:00 * Date/Time End: 1999-11-29T00:00:00 * Elevation: -5055.4 m * Penetration: 46.3 m * Recovery: 3.59 m * Location: Indian Ocean * Campaign: Leg187 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 5 cores; 23.7 m cored; 0 m drilled; 15.1 % recovery
187-1153A  * Latitude: -41.271510 * Longitude: 129.815130 * Date/Time Start: 1999-11-29T00:00:00 * Date/Time End: 1999-12-01T19:00:00 * Elevation: -5581.4 m * Penetration: 274.9 m * Recovery: 1.77 m * Location: Indian Ocean * Campaign: Leg187 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 1 core; 7.3 m cored; 0 m drilled; 24.2 % recovery
Comment:
Mantle province and sample depth data are from Shipboard Scientific Party (2001, doi:10.2973/odp.proc.ir.187.101.2001).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEvent
Sample code/labelSample labelShau, Yen-HongDSDP/ODP/IODP sample designation
Sample IDSample IDShau, Yen-Hong
Sample commentSample commentShau, Yen-Hongmantle province
Depth, relativeDepth relmShau, Yen-Hongm in basement
NRM, IntensityInten (NRM)mA/mShau, Yen-HongMagnetometer, spinner (SMD-88)
Magnetic susceptibility, volumekappa10-6 SIShau, Yen-HongBartington MS2 magnetic susceptibility meter
Hysteresis, saturation remanence, per unit volumeMsrmA/mShau, Yen-HongMagnetometer (MAG)
Hysteresis, saturation magnetization, per unit volumeMsmA/mShau, Yen-HongMagnetometer (MAG)
10 Hysteresis, saturation magnetization/ saturation remanenceMrs/MsShau, Yen-HongMagnetometer (MAG)
11 Coercive forceBcmTShau, Yen-HongMagnetometer (MAG)
12 Coercivity of remanenceBcrmTShau, Yen-HongMagnetometer (MAG)
13 Coercivity of remanence/coercive forceBcr/BcShau, Yen-HongMagnetometer (MAG)
14 Curie temperatureCurie temp°CShau, Yen-Hong# = or 580°C
Size:
1411 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Event

Sample label

Sample ID

Sample comment

Depth rel [m]

Inten (NRM) [mA/m]

kappa [10-6 SI]

Msr [mA/m]

Ms [mA/m]
10 
Mrs/Ms
11 
Bc [mT]
12 
Bcr [mT]
13 
Bcr/Bc
14 
Curie temp [°C]
187-1152A 187-1152A-1R-1,15-201Transitional-Pacific0.15336026903215006097000.52735.849.81.391282
187-1152B 187-1152B-2R-1,53-612Transitional-Pacific0.5353020102546003780000.67464.884.31.301318
187-1152B187-1152B-3R-1,11-173Transitional-Pacific5.3148019002073004189000.49537.063.41.714348
187-1152B187-1152B-4R-1,63-694Transitional-Pacific13.83184017601688002700000.62557.675.91.318
187-1152B187-1152B-4R-2,20-255Transitional-Pacific14.90215011902466004925000.50130.142.41.409263
187-1152B187-1152B-5R-1,96-1006Transitional-Pacific19.16273018502455004238000.57946.564.61.389
187-1152B187-1152B-5R-2,11-177Transitional-Pacific19.8110801620952001775000.53657.989.71.549
187-1152B187-1152B-6R-1,11-138Transitional-Pacific22.81339015802093003474000.60380.4118.01.468
187-1153A 187-1153A-7R-4,30-349Pacific0.00220021302881005278000.54646.568.21.467
187-1153A187-1153A-8R-1,48-5210Pacific0.48610014302847004367000.65247.958.41.219288
187-1153A187-1153A-8R-2,33-3911Pacific1.79812014703098005704000.54344.664.41.444257
187-1154A 187-1154A-2R-1,78-8212Pacific0.78358020201984003139000.63261.185.41.398
187-1154A187-1154A-3R-1,80-8513Pacific4.80294019503360004748000.70887.8107.01.219255
187-1154A187-1154A-3R-2,32-3714Pacific5.77120022403511004909000.71586.8108.01.244
187-1154A187-1154A-4R-1,18-2215Pacific8.68163021801461002658000.55047.667.31.414
187-1154A187-1154A-4R-2,77-8016Pacific10.71150021001939003068000.63256.673.11.292
187-1154A187-1154A-5R-1,85-8917CPacific14.3544017801811003262000.55548.467.21.388329
187-1154A187-1154A-5R-1,85-8917RPacific14.3547026401456002534000.57553.672.61.354269
187-1154A187-1154A-6R-1,66-6918CPacific18.7655012601069002110000.50741.461.61.488
187-1154A187-1154A-6R-1,66-6918RPacific18.7681025902561004678000.54732.443.71.349
187-1154A187-1154A-7R-1,25-3119CPacific23.55161015703147005775000.54540.855.11.350
187-1154A187-1154A-7R-1,25-3119RPacific23.55138020801919002899000.66265.380.51.233
187-1154A187-1154A-8R-1,135-14020CPacific29.3597010901951003158000.61869.891.71.314303
187-1154A187-1154A-8R-1,135-14020RPacific29.3575020703866005615000.68965.680.51.227288
187-1154A187-1154A-8R-2,32-3821CPacific29.8298014001702003098000.54953.274.91.408
187-1154A187-1154A-8R-2,32-3821RPacific29.8241022502885004561000.63349.461.11.237
187-1154A187-1154A-9R-1,37-4022Pacific32.97128012003700006070000.61044.757.81.293
187-1155A 187-1155A-4R-1,18-2223Transitional-Pacific7.18572012205423008381000.64759.473.51.237281
187-1155A187-1155A-7R-1,55-5924Transitional-Pacific21.75976021903724009084000.41014.818.31.236229
187-1155B 187-1155B-2R-1,45-5325CTransitional-Pacific0.45265010602365003728000.63559.074.01.254
187-1155B187-1155B-2R-1,45-5325RTransitional-Pacific0.45358017601712003466000.49428.839.91.385
187-1155B187-1155B-3R-1,58-6226Transitional-Pacific4.1819601820639001295000.49330.545.51.492
187-1155B187-1155B-4R-2,6-1127Transitional-Pacific9.0637801130468001042000.44936.057.51.597
187-1155B187-1155B-5R-1,99-10228Transitional-Pacific13.19840890894001576000.56778.9133.01.686
187-1155B187-1155B-6R-3,62--6729Transitional-Pacific20.72150013403008005284000.56946.459.01.272
187-1155B187-1155B-7R-1,125-13030Transitional-Pacific23.05629018001232003040000.40539.671.01.793
187-1155B187-1155B-8R-1,119-12431Transitional-Pacific27.9955007802115003239000.65367.990.81.337264
187-1155B187-1155B-9R-1,10-1432Transitional-Pacific31.60311011801488002250000.66162.976.51.216
187-1156A 187-1156A-2R-2,67-7233Indian2.17535012101846003525000.52449.979.71.597
187-1156A187-1156A-3R-1,147-15034Indian7.87419018102083004191000.49733.345.21.357
187-1156B 187-1156B-2R-1,73-7735CIndian0.73106010302337005472000.42731.754.01.703346
187-1156B187-1156B-2R-1,73-7735RIndian0.73685015801844003378000.54646.167.61.466260
187-1156B187-1156B-3R-1,2-636Indian5.82767014102100005473000.38423.436.31.551307
187-1156B187-1156B-4R-1,26-3037CIndian15.46998012902917004742000.61552.164.51.238
187-1156B187-1156B-4R-1,26-3037RIndian15.46634010702604003864000.67464.879.01.219
187-1156B187-1156B-4R-3,38-4138Indian18.16368015003490006064000.57533.341.01.231
187-1156B187-1156B-5R-1,75-8039Indian25.05178012001686002727000.61853.466.01.236
187-1156B187-1156B-6R-2,64-7040Indian30.7434007601555002591000.60065.893.21.416
187-1157A 187-1157A-2R-1,52-5641Indian0.5220001270812001509000.53838.552.61.366301
187-1157A187-1157A-3R-1,132-13542Indian7.32395017002981005027000.59336.245.91.268
187-1157A187-1157A-4R-1,32-3743Indian15.72540011602286003489000.65558.873.01.241
187-1157B 187-1157B-2R-1,65-6944Indian0.65323014602085003991000.52238.653.91.396
187-1157B187-1157B-3R-1,62-6645Indian8.5240006101922002877000.66877.193.21.209
187-1157B187-1157B-4R-2,42-4646Indian14.33507014903016004566000.66060.073.11.218
187-1157B187-1157B-5R-2,27-3447Indian18.9724009501576002425000.65080.5100.01.242
187-1157B187-1157B-6R-2,143-14848Indian24.53391013501493002900000.51549.486.01.741
187-1157B187-1157B-8R-1,77-8149Indian31.57172022702058004519000.45529.140.11.378
187-1157B187-1157B-9R-1,10-1450Indian35.90253014402007003476000.57755.382.91.499
187-1158A 187-1158A-2R-1,15-2051CPacific0.15542011002841004711000.60364.787.31.349
187-1158A187-1158A-2R-1,15-2051RPacific0.1531709701291002695000.47934.255.81.632
187-1158B 187-1158B-2R-1,42-4652Pacific0.422880412035530010402000.34214.619.91.363270
187-1158B187-1158B-3R-1,1-653CPacific5.61193053302346006340000.37016.421.01.280443
187-1158B187-1158B-3R-1,1-653RPacific5.61485040902681007681000.34914.620.91.432377
187-1158B187-1158B-4R-1,34-3754CPacific10.94935016102557004048000.63268.183.41.225
187-1158B187-1158B-4R-1,34-3754RPacific10.94227018801307002108000.62084.1118.01.403
187-1158C 187-1158C-1W-1,8-1455Pacific0.001120020302764005676000.48741.267.11.629
187-1158C187-1158C-2R-1,134-13756Pacific1.34321041402913008353000.34915.721.61.376326
187-1159A 187-1159A-2R-1,26-3057CPacific0.30863017503234005147000.62850.261.81.231
187-1159A187-1159A-2R-1,26-3057RPacific0.30648016202242003312000.67770.488.11.251
187-1159A187-1159A-5R-1,25-3058Pacific12.00445020003615006442000.56125.731.51.226
187-1159A187-1159A-6R-2,1-559Pacific17.50768020502988004573000.65341.447.91.157
187-1159A187-1159A-7R-2,32-3560Pacific22.801630017602829004332000.65352.762.31.182243
187-1160A 187-1160A-2R-1,23-2561CPacific0.239006101128001764000.63981.1103.01.270319
187-1160A187-1160A-2R-1,23-2561RPacific0.2364010701157002371000.48838.053.41.405293
187-1160B 187-1160B-2R-1,19-2562Pacific0.19143015601590002793000.56929.335.41.208
187-1160B187-1160B-4R-1,72-7763Pacific10.1292902400012210012490000.0983.69.92.725177
187-1160B187-1160B-6R-2,129-13364Pacific21.59255012501076002176000.49527.036.11.337
187-1160B187-1160B-7R-1,59-6265Pacific28.4918902255016670014872000.1124.812.02.510172
187-1160B187-1160B-8R-1,30-3666CPacific33.9030022001422003278000.43430.246.71.546
187-1160B187-1160B-8R-1,30-3666RPacific33.903902680597001519000.39325.440.91.610
187-1160B187-1160B-9R-1,111-11667Pacific38.2141001482020400015507000.1326.414.92.328231
187-1161A 187-1161A-1W-CC,21-2568Indian0.0033016501510003457000.43729.247.81.637
187-1161A187-1161A-3R-1,121-12469CIndian5.2134012601304002472000.52844.360.31.361
187-1161A187-1161A-3R-1,121-12469RIndian5.2183013802494004493000.55535.645.61.281
187-1161A187-1161A-4R-1,49-5370CIndian13.89478013302618004109000.63754.167.91.255253
187-1161A187-1161A-4R-1,49-5370RIndian13.89100018101668003365000.49524.633.61.366298
187-1161A187-1161A-5R-1,35-3971Indian23.15316020901635003783000.43222.833.21.456
187-1161B 187-1161B-1W-1,65-6972Indian0.00289049002971009841000.30211.315.71.389281
187-1161B187-1161B-2R-1,19-2373Indian0.1937018701666003829000.43525.136.41.450
187-1162A 187-1162A-5R-1,33-3774Pacific22.331202340985003565000.27629.082.92.859#367
187-1162B 187-1162B-5R-1,81-8675-1Pacific17.214101250899001779000.50625.634.51.348384
187-1162B187-1162B-5R-1,81-8675-2Pacific17.2115502440841001613000.52224.435.01.434405
187-1162B187-1162B-5R-1,81-8675-3Pacific17.212401570696001515000.46025.635.71.395369
187-1163A 187-1163A-2R-1,135-14076Transitional-Pacific1.35160010201380002938000.47038.261.01.597288
187-1163A187-1163A-3R-2,28-3377Transitional-Pacific6.13445010001636002602000.62956.170.21.251
187-1163A187-1163A-4R-1,113-11778Transitional-Pacific11.5348808801536002508000.61363.180.81.281301
187-1163A187-1163A-5R-2,23-2879Transitional-Pacific16.4567909602162007658000.28255.565.71.184270
187-1163A187-1163A-6R-2,70-7580Transitional-Pacific21.67285013002037003203000.63651.866.31.280
187-1163A187-1163A-7R-2,49-5581Transitional-Pacific26.0153209801469002335000.62966.981.11.212
187-1163A187-1163A-9R-1,25-2882Transitional-Pacific33.3547509101965003065000.64170.085.91.227
187-1163A187-1163A-10R-1,47-5283Transitional-Pacific38.57506010401916003186000.60150.962.81.234
187-1163A187-1163A-11R-1,58-6384Transitional-Pacific42.68242010602467004270000.57849.365.61.331
187-1164A 187-1164A-3R-1,34-3885CTransitional-Pacific3.94101014602300619000.03712.268.25.590260
187-1164A187-1164A-3R-1,34-3885RTransitional-Pacific3.94114012202902004587000.63346.454.51.175253
187-1164A187-1164A-4R-1,7-1186CTransitional-Pacific8.2710909901966003433000.57358.475.61.295
187-1164A187-1164A-4R-1,7-1186RTransitional-Pacific8.27140013901977003095000.63966.483.81.262
187-1164B 187-1164B-2R-1,0-787Transitional-Pacific0.00249016002261005040000.44926.136.31.391
187-1164B187-1164B-3R-1,69-7288Transitional-Pacific6.09305010202439003936000.62037.645.81.218
187-1164B187-1164B-4R-1,53-5989Transitional-Pacific10.93393011701768003077000.57543.557.41.320
187-1164B187-1164B-5R-1,64-6790Transitional-Pacific20.4454208301178002488000.47437.454.91.468248
187-1164B187-1164B-6R-1,15-2091Transitional-Pacific24.35297011201187002013000.59053.876.41.420
187-1164B187-1164B-7R-1,101-10692Transitional-Pacific29.9127807401306002174000.60158.187.71.509
187-1164B187-1164B-9R-1,105-10993Transitional-Pacific48.15311011201463002250000.65075.699.21.312279
187-1164B187-1164B-10R-1,8-1594Transitional-Pacific56.4848809801342002284000.58760.190.81.511262