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Miller, D Jay; Iturrino, Gerardo J; McGuire, Jennifer C (2003): (Table T1) Orientation estimates for oxide-bearing lithologies of ODP Hole 179-1105A [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.787243, Supplement to: Miller, DJ et al. (2003): Core-log correlations in oceanic basement from Hole 1105A on the Southwest Indian Ridge. In: Casey, JF; Miller, DJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 179, 1-29, https://doi.org/10.2973/odp.proc.sr.179.016.2003

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Published: 2003 (exact date unknown)DOI registered: 2012-09-07

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Abstract:
During a lull in hammer drill testing during Ocean Drilling Program Leg 179, Hole 1105A was cored to 158 mbsf on the Southwest Indian Ridge within ~1.3 km of Hole 735B. This coring operation resulted in not only high recovery (in excess of 80%) but in the collection of a suite of continuous downhole logging data. This combination allows the rare opportunity to demonstrate the utility of logging in hard rock environments. By using the core as a reference, we have been able to recognize specific Formation MicroScanner (FMS) image characteristics that represent different structural aspects of the core. Gabbro with disseminated oxide has a mottled appearance in the FMS images, and in foliated intervals, the attitude of the foliation can be determined from FMS orientation. We also present evidence of decreased and poorer quality core recovery from intervals that have resistivity characteristics indicative of intense fracturing and that certain lithologic units can have markedly different characteristics in the FMS record, improving estimates of interval thickness. This study shows that, at least for this expedition, the material sampled is consistently (albeit not universally) from the top of the cored interval, which varies in lithologic character on scales as small as a few centimeters. Therefore, the core recovered does not necessarily proportionally represent the cored interval. Reorientation of structural data measured on cores and on FMS images to paleomagnetic data indicates the direction of principle stress during the crystallization and deformation history of the Atlantis Bank was parallel to the Southwest Indian Ridge axis.
Project(s):
Coverage:
Latitude: -32.718910 * Longitude: 57.277530
Date/Time Start: 1998-05-02T06:50:00 * Date/Time End: 1998-05-10T15:50:00
Minimum DEPTH, sediment/rock: 31.10 m * Maximum DEPTH, sediment/rock: 152.70 m
Event(s):
179-1105A * Latitude: -32.718910 * Longitude: 57.277530 * Date/Time Start: 1998-05-02T06:50:00 * Date/Time End: 1998-05-10T15:50:00 * Elevation: 0.0 m * Penetration: 158 m * Recovery: 118.43 m * Location: Indian Ocean * Campaign: Leg179 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 30 cores; 143 m cored; 15 m drilled; 82.8 % recovery
Comment:
DEPTH, sediment is curated depth (mbsf).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Sample code/labelSample labelMiller, D JayDSDP/ODP/IODP sample designationonly top of interval given
PiecePieceMiller, D Jay
Sample commentSample commentMiller, D Jayoriented Y = yes, N = no
DEPTH, sediment/rockDepth sedmGeocode
Depth, loggingDepth logmMiller, D Jay
FeatureFeatureMiller, D Jaytype
Bed dipDipdegMiller, D Jay
AzimuthAzimdegMiller, D Jay
Size:
497 data points

Data

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


Sample label

Piece

Sample comment

Depth sed [m]

Depth log [m]

Feature

Dip [deg]

Azim [deg]
179-1105A-3R-2,12012Y31.1031.6Steep-dipping oxide veins60255
179-1105A-4R-4,254Y37.7038.3Top of dipping oxide layer45230
179-1105A-5R-1,1208Y39.5039.9Oxide-gabbro/gneissic oxide gabbro45120
179-1105A-5R-1,362Y38.7039.1Base crystal-plastic foliation and oxide out25161
179-1105A-7R-1,401Y48.2048.7Top of oxide gabbro45200
179-1105A-7R-1,705Y48.5049.0Base of oxide gabbro45205
179-1105A-7R-1,13510Y49.1549.6Top of gneissic oxide gabbro25180
179-1105A-7R-2,252Y49.4049.8Base of gneissic oxide gabbro55200
179-1105A-7R-2,805Y49.9050.1Increase in oxide abundance45205
179-1105A-7R-3,13Y51.4051.9Base of gneissic oxide gabbro70170
179-1105A-8R-2,474Y53.9054.5Top of oxide gabbro30265
179-1105A-8R-2,1338Y54.1054.7Base of oxide gabbro30285
179-1105A-8R-3,201Y55.0055.6Base of disseminated oxide gabbro15330
179-1105A-8R-3,12510Y56.1056.5Top of oxide gabbro20310
179-1105A-9R-1,342Y58.2058.7Top of oxide gabbro30210
179-1105A-9R-3,766Y61.2061.7Base of oxide gabbro30230
179-1105A-10R-1,202Y62.2062.9Top of oxide gabbro30200
179-1105A-10R-1,403Y62.4063.2Base of oxide gabbro25240
179-1105A-10R-1,703Y62.7063.3Top of oxide gabbro35250
179-1105A-10R-1,803Y62.8063.4Base of oxide gabbro35270
179-1105A-10R-2,304Y63.8064.4Top oxide gabbro40320
179-1105A-10R-2,908Y65.0065.7Base oxide gabbro45350
179-1105A-11R-1,455Y67.4067.8Top of oxide gabbro50345
179-1105A-11R-3,352Y69.9070.2Decrease in oxide abundance55355
179-1105A-12R-1,8812N72.2072.6Base of oxide gabbro40110
179-1105A-13R-1,262Y76.5076.8Top of oxide layer25305
179-1105A-13R-1,352Y76.6076.9Base of oxide layer25295
179-1105A-13R-1,663CY77.0077.2Top of oxide layer40225
179-1105A-13R-1,853DY77.2077.4Base of oxide layer35230
179-1105A-13R-2,502Y78.1078.5Top of oxide layer25290
179-1105A-13R-2,602Y78.2078.6Base of oxide layer30280
179-1105A-13R-2,1254Y78.8079.2Top of oxide layer25290
179-1105A-13R-3,253Y79.2079.6Base of oxide layer35320
179-1105A-16R-1,6013Y91.2091.9Bottom of strong foliation65220
179-1105A-16R-1,304Y90.9091.6Top of strong foliation10270
179-1105A-16R-2,102Y92.0092.5Steep-dipping oxide layer10270
179-1105A-17R-1,473Y96.1096.4Top of dipping oxide gabbro25200
179-1105A-17R-1,706Y96.3096.5Base of dipping oxide gabbro25210
179-1105A-17R-3,14718Y99.70100.0Top of foliated oxide layer25270
179-1105A-17R-4,504Y100.30100.6Base of foliated oxide gabbro25270
179-1105A-18R-1,11711Y101.30102.3Base of foliated oxide gabbro45300
179-1105A-18R-1,354Y100.50101.5Top of oxide gabbro45300
179-1105A-19R-1,505Y105.70106.1Top of oxide gabbro2510
179-1105A-19R-1,1206Y106.30106.7Top of oxide gabbro25270
179-1105A-19R-1,1106Y106.10106.5Base of oxide gabbro25290
179-1105A-19R-3,202Y108.10108.4Base of oxide gabbro25300
179-1105A-19R-4,11Y109.20109.5Top of oxide gabbro25320
179-1105A-21R-1,908AY111.70111.9Oxide gabbro2530
179-1105A-22R-2,664Y117.10117.2Base of foliated oxide gabbro3075
179-1105A-22R-3,704Y118.30118.4Base of oxide gabbro30355
179-1105A-23R-1,707Y120.10120.1Top of oxide gabbro30240
179-1105A-23R-1,908Y120.30120.3Base of oxide gabbro30240
179-1105A-24R-1,1506Y125.30125.7Foliated oxide gabbro20170
179-1105A-24R-2,537Y126.20126.6Crosscutting fracture30260
179-1105A-24R-3,454Y127.20127.4Base of oxide gabbro55350
179-1105A-25R-1,71Y129.10129.3Top of strongly foliated oxide gabbro2555
179-1105A-25R-2,201Y130.60130.8Base of strongly foliated oxide gabbro35190
179-1105A-25R-2,1324Y131.70131.9Top of foliated oxide gabbro30200
179-1105A-25R-3,576Y132.30132.5Base of foliated oxide gabbro20230
179-1105A-26R-1,752Y134.70134.9Base of oxide gabbro35320
179-1105A-26R-2,21Y135.30135.4Top of oxide gabbro50320
179-1105A-26R-2,201Y135.50135.6Base of oxide gabbro15355
179-1105A-27R-1,471Y139.10139.8Top of oxide gabbro2050
179-1105A-27R-1,953Y139.70140.5Base of oxide gabbro2050
179-1105A-28R-1,1043Y144.70144.7Top of oxide gabbro15225
179-1105A-28R-2,41Y144.80144.8Base of oxide gabbro30270
179-1105A-28R-3,1402Y147.00147.0Subhorizontal fracture30270
179-1105A-29R-1,1004Y149.40149.8Top of foliated oxide gabbro20170
179-1105A-29R-2,943Y150.60151.1Oxide gabbro pod45210
179-1105A-29R-3,404Y151.30151.7Top of strongly foliated oxide gabbro45210
179-1105A-29R-4,402Y152.70153.1Base of strongly foliated oxide gabbro45280