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Li, Long; Bebout, Gray E; Idleman, Bruce D (2007): (Table 1) Rock description and nitrogen concentrations and isotopic compositions of altered oceanic crust samples from ODP Hole 129-801C. PANGAEA, https://doi.org/10.1594/PANGAEA.711133, In supplement to: Li, L et al. (2007): Nitrogen concentration and delta 15N of altered oceanic crust obtained on ODP Legs 129 and 185: Insights into alteration-related nitrogen enrichment and the nitrogen subduction budget. Geochimica et Cosmochimica Acta, 71(9), 2344-2360, https://doi.org/10.1016/j.gca.2007.02.001

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Project(s):
Coverage:
Latitude: 18.642300 * Longitude: 156.359800
Date/Time Start: 1990-01-06T11:48:00 * Date/Time End: 1990-01-16T07:15:00
Minimum DEPTH, sediment/rock: 494.79 m * Maximum DEPTH, sediment/rock: 590.83 m
Event(s):
129-801C * Latitude: 18.642300 * Longitude: 156.359800 * Date/Time Start: 1990-01-06T11:48:00 * Date/Time End: 1990-01-16T07:15:00 * Elevation: -5685.0 m * Penetration: 594.3 m * Recovery: 60.6 m * Location: North Pacific Ocean * Campaign: Leg129 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 12 cores; 100.6 m cored; 0 m drilled; 60.2 % recovery
Comment:
The basement at Site 801 is divided into 4 intervals (the alkaline basalt sills and 3 MORB sections) according to the geochemical characterization of more than 100 communal samples (Plank et al., 2000; http://www-odp.tamu.edu/publications/185_IR/185ir.htm). For each interval, one composite was made for submarine extrusives (FLO) and clastic rocks (VCL) by combing proportional communal samples. FLO and VCL are then combined into the MIX composite in a ratio of 30-70%. The SUPER composite was made for the entire MORB interval by combing the 3 MORB composites. The SED composite was made for the intercalated sediments in the upper 230 m of the basement (mostly in Sequences I, III, and IV, see descriptions by Plank et al. (2000); http://www-odp.tamu.edu/publications/185_IR/185ir.htm; Alt (2003); doi:10.1029/2002GC000400).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
DEPTH, sediment/rockDepth sedmGeocode
Sample code/labelSample labelLi, LongDSDP/ODP/IODP sample designation
Sample commentSample commentLi, Long
Lithologic unit/sequenceUnitLi, Long
DescriptionDescriptionLi, Long
Nitrogen, totalTNmg/kgLi, Long
δ15Nδ15N‰ airLi, LongMass spectrometer Finnigan MAT 252air
Size:
78 data points

Data

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Depth sed [m]

Sample label

Sample comment

Unit

Description

TN [mg/kg]

δ15N [‰ air]
494.79129-801C-1R-1,109-141I. Alkalic basaltsModerate alteration, white clay and smectite replacement, pyrite scattered throughout7.5-1.6
499.35129-801C-1R-5,80-82I. Alkalic basaltsModerate alteration with large carbonate vein2.4-4.9
522.42129-801C-4R-1,72-77II. Upper hydrothermalHydrothermal deposit3.00.0
532.58129-801C-5R-2,12-17III. Upper massive flowsHighly altered breccia with smectite-bearing vein network13.40.5
533.69129-801C-5R-2,123-130III. Upper massive flowsHighly altered breccia with large veins containing smectite and carbonate17.10.9
534.76129-801C-5R-3,99-104III. Upper massive flowsHighly altered pillow, glassy rims and ground mass altered to clay minerals, a few specks of pyrite present16.31.2
535.02129-801C-5R-3,125-131III. Upper massive flowsHigh alteration, devitrified rims and ground mass altered to green layers15.30.7
552.98129-801C-7R-3,0-5III. Upper massive flowsSlight alteration with smectite in vesicles and along veins12.40.1
559.68129-801C-8R-1,18-21III. Upper massive flowsModerate to high alteration with clay and carbonate filled vesicles and replaced microlites18.20.7
560.15129-801C-8R-1,65-67III. Upper massive flowsHigh alteration with fe-hydroxide stained margins9.3-0.2
575.00129-801C-MORB 0-110 FLOComposite3.8-6.2
575.00129-801C-MORB 0-110 MIXComposite4.9-7.1
576.83129-801C-10R-6,67-70III. Upper massive flowsVery slight alteration with green smectite replacing olivine and carbonate and/or clay filling vesicles and veins6.70.5
580.16129-801C-11R-2,131-136III. Upper massive flowsSlight to moderate alteration with replacement of mesostasis and microphenocrysts by green clays.6.7-0.1
588.31129-801C-12R-1,101-104III. Upper massive flowsSlight alteration with green smectite replacing glassy rims and olivine microphenocrsts, some green smectite oxidized with yellow coating13.71.0
590.83129-801C-12R-3,57-62III. Upper massive flowsSlight alteration with narrow halos4.80.9