Smith, Guy M; Banerjee, Subir K (1985): Magnetic properties of plutonic rocks at DSDP Leg 82 holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.805578, Supplement to: Smith, GM; Banerjee, SK (1985): Magnetic properties of plutonic rocks from the Central North Atlantic Ocean. In: Bougault, H; Cande, SC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 82, 377-383, https://doi.org/10.2973/dsdp.proc.82.117.1985
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Published: 1985 (exact date unknown) • DOI registered: 2013-02-21
Abstract:
Ten samples of gabbro and peridotite, with varying degrees of serpentinization, were studied by magnetic techniques and reflected light microscopy. Evidence from these methods suggests that the natural remanent magnetization is primarily of chemical origin. It is generally weak for the gabbros and much stronger for the peridotites. This difference is offset by the fact that the peridotites have generally lower magnetic stability and Koenigsberger ratios. There is a considerable variation in both magnetic parameters and petrology even among closely spaced samples, which suggests that some combination of source heterogeneity and tectonic mixing was involved in the production of these rocks. However, the small number of samples makes this conclusion tentative. There may also have been significant postemplacement alteration involved. All samples show a significant anisotropy of weak field susceptibility that appears to be related to deformation. This anisotropy may be useful in defining petrofabrics.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 36.893553 * Median Longitude: -36.802633 * South-bound Latitude: 34.722200 * West-bound Longitude: -38.842700 * North-bound Latitude: 38.939700 * East-bound Longitude: -34.685300
Date/Time Start: 1981-09-22T00:00:00 * Date/Time End: 1981-10-16T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets
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Datasets listed in this publication series
- Smith, GM; Banerjee, SK (1985): (Table 2) Intrinsic properties of plutonic rocks at DSDP Holes 82-556, 82-558 and 82-560. https://doi.org/10.1594/PANGAEA.805574
- Smith, GM; Banerjee, SK (1985): (Table 1) Remanent properties of plutonic rocks at DSDP Holes 82-556, 82-558 and 82-560. https://doi.org/10.1594/PANGAEA.805570
- Smith, GM; Banerjee, SK (1985): (Table 3) Susceptibility anisotropy of plutonic rocks at DSDP Holes 82-556, 82-558 and 82-560. https://doi.org/10.1594/PANGAEA.805575