Markov, Yu D; Mozherovsky, A V; Vashchenkova, N G (2004): Chemical and mineral compositions of bottom sediments from the East Pacific Rise near 13°N [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.745233, Supplement to: Markov, YD et al. (2004): Metalliferous sediments in the active rift zone of the East Pacific Rise. Pacific Geology, 23(5), 40-53
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Abstract:
During underwater photography and sampling of the rift valley bottom in the axial part of the East Pacific Rise, where water transparency is reduced due to hydrothermal input, ore manifestations have been found. The bottom is covered by them as by a jacket on both sides from the EPR axial zone. However, exposed pillow-lavas and clumpy blocks in rift ledges are covered by a thin metal-bearing film. It is supposed that sedimentation results mainly from hydrothermal input of dissolved chemical elements in seawater, their transformation on the geochemical barrier, and subsequent deposition as particulates. Contents of ore components in metalliferous sediments have been measured by atomic-absorption and X-ray radiometry methods. Sediment age has been determined as Middle Pleistocene - Holocene. Maximal hydrothermal activity was at the beginning of Early Holocene, about 10 Ka. A smoker has been found on the western slope of the rift valley.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 12.853539 * Median Longitude: -103.908301 * South-bound Latitude: 12.732000 * West-bound Longitude: -104.036800 * North-bound Latitude: 12.897500 * East-bound Longitude: -103.813700
Event(s):
AVI13-26 * Latitude: 12.877600 * Longitude: -103.912800 * Location: East Pacific Rise * Campaign: AVI13 * Basis: Akademik A. Vinogradov * Method/Device: Gravity corer (GC)
AVI13-37 * Latitude: 12.732000 * Longitude: -103.861800 * Location: East Pacific Rise * Campaign: AVI13 * Basis: Akademik A. Vinogradov * Method/Device: Grab (GRAB)
AVI13-50 * Latitude: 12.862900 * Longitude: -103.958400 * Location: East Pacific Rise * Campaign: AVI13 * Basis: Akademik A. Vinogradov * Method/Device: Gravity corer (GC)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Markov, YD; Mozherovsky, AV; Vashchenkova, NG (2004): (Table 1) Chemical composition of bottom sediments from the East Pacific Rise near 13°N. https://doi.org/10.1594/PANGAEA.745230
- Markov, YD; Mozherovsky, AV; Vashchenkova, NG (2004): (Table 2) Heavy clastic minerals of grain size fraction 0.100-0.050 mm from bottom sediments of the East Pacific Rise near 13°N. https://doi.org/10.1594/PANGAEA.745232