de.pangaea.dataset787243 und dataset PANGAEA

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https://www.pangaea.de/ information pointOfContact 2026-05-01T03:13:28Z https://doi.pangaea.de/10.1594/PANGAEA.787243 2003-01-01 publication https://doi.org/10.1594/PANGAEA.787243 Miller, D Jay

john_miller@odp.tamu.edu

author Iturrino, Gerardo J author McGuire, Jennifer C author PANGAEA

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https://www.pangaea.de/ information publisher tableDigital Supplement to: Miller, D Jay; Iturrino, Gerardo J; McGuire, Jennifer C (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 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. completed Miller, D Jay

john_miller@odp.tamu.edu

principalInvestigator ODP Ocean Drilling Program theme 1995-01-01 creation PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-3.0: Creative Commons Attribution 3.0 Unported textTable und geoscientificInformation 57.27753 57.27753 -32.71891 -32.71891 1998-05-02T06:50:00 1998-05-10T15:50:00 31.1 152.7 DEPTH, sediment is curated depth (mbsf). Sample code/label thematicClassification DSDP/ODP/IODP sample designation; only top of interval given Piece thematicClassification Sample comment thematicClassification oriented Y = yes, N = no DEPTH, sediment/rock physicalMeasurement m m Depth, logging physicalMeasurement m m Feature thematicClassification type Bed dip physicalMeasurement deg deg Azimuth physicalMeasurement deg deg text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.787243?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: 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 30 cores; 143 m cored; 15 m drilled; 82.8 % recovery 1998-05-02T06:50:00