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FEGI Team (1997): Chemical and mineral composition of rocks and sediments from the Amirante Arc [dataset publication series]. Far East Geological Institute, Far East Division, Russian Academy of Sciences, PANGAEA, https://doi.org/10.1594/PANGAEA.733955, Supplement to: FEGI Team (1997): Geological Structure of the Amirante Arc in the Indian Ocean. Vladivostok, Dal'nauka (E.P. Lelikov, Ed.), 162 pp

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Abstract:
New geological and geophysical data on the Amirante Arc, which locates to the south of the Seychelles Islands, are presented. These data were obtained by Pacific Oceanological Institute during the 33-rd cruise of R/V Professor Bogorov in 1990. The Amirante Arc represents a seamount chain, which has submeridional strike and total length about 400 km. To the west of the Amirante Arc there are a deep sea trench and a back-arc basin, i.e. this area is characterized by structural elements associated with the subduction zone of Western Pacific type. According to our data the Amirante Arc is composed by tholeiites of ocean plateau type. This facts are evidences that the Amirante Arc differs from typical Pacific island arcs. This gives an opportunity to distinguish a special type of oceanic structures, i.e. non-volcanic (amagmatic) ridges. The Amirante Ridge has been probably formed as a result of oceanic crust heaping due to horizontal displacements of its blocks in the process of spreding ridge formation in the Indian Ocean during Cretaceous-Paleogene.
Related to:
Derkachev, A N; Botsul, A I; Nikolaeva, N A (1997): Quaternary deposits and features of their mineral composition. In: Lelikov, E.P. (Ed.), Geological Structure of the Amirante Arc in the Indian Ocean; Dal'nauka (Vladivostok), 129-146
Sedin, V T; Tatarin, I A; Badredinov, Z G; Chubarov, Valerii M (1997): Magmatic rocks of the Northern and Central blocks. In: Lelikov, E.P. (Ed.), Geological Structure of the Amirante Arc in the Indian Ocean; Dal'nauka (Vladivostok), 49-69
Tatarin, I A; Badredinov, Z G; Sedin, V T; Chubarov, Valerii M (1997): Magmatic rocks of the Southern block. In: Lelikov, E.P. (Ed.), Geological Structure of the Amirante Arc in the Indian Ocean; Dal'nauka (Vladivostok), 70-96
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: -7.164144 * Median Longitude: 53.052508 * South-bound Latitude: -8.565000 * West-bound Longitude: 52.541700 * North-bound Latitude: -2.083300 * East-bound Longitude: 56.483300
Event(s):
85A1 * Latitude: -2.083300 * Longitude: 55.516700 * Elevation: -4400.0 m * Location: Western Indian Ocean
85A3 * Latitude: -3.476700 * Longitude: 55.505000 * Elevation: -3100.0 m * Location: Western Indian Ocean
85A4 * Latitude: -4.000000 * Longitude: 55.500000 * Elevation: -48.0 m * Location: Seychell Bank, Western Indian Ocean
Comment:
Description of geological stations can be found here: hdl:10013/epic.34219.d001
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
14 datasets

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Datasets listed in this publication series

  1. Sedin, VT; Tatarin, IA; Badredinov, ZG (1997): (Table 1) Representative microprobe analyses of minerals from basalts of the Northern and Central blocks, the Amirante Arc. https://doi.org/10.1594/PANGAEA.733672
  2. Sedin, VT; Tatarin, IA; Badredinov, ZG (1997): (Table 2) Representative microprobe analyses of chromspinels from feldspar-free olivine-orthopyroxene volcanic rock from the Northern block of the Amirante Arc. https://doi.org/10.1594/PANGAEA.733680
  3. Sedin, VT; Tatarin, IA; Badredinov, ZG et al. (1997): (Table 3) Representative microprobe analyses of pyroxene from feldspar-free olivine-orthopyroxene volcanic rocks of the Northern block, the Amirante Arc. https://doi.org/10.1594/PANGAEA.733690
  4. Sedin, VT; Tatarin, IA; Badredinov, ZG et al. (1997): (Table 4) Abundance of secondary minerals in basalts from the Northern and Central blocks of the Amirante Arc. https://doi.org/10.1594/PANGAEA.733884
  5. Tatarin, IA; Badredinov, ZG; Sedin, VT et al. (1997): (Table 5) Chemical composition of magmatic rocks from the Amirante Arc. https://doi.org/10.1594/PANGAEA.733885
  6. Tatarin, IA; Badredinov, ZG; Sedin, VT et al. (1997): (Table 6) Representative microprobe analyses of minerals from plagiobasalts of the Southern block, the Amirante Arc. https://doi.org/10.1594/PANGAEA.733898
  7. Tatarin, IA; Badredinov, ZG; Sedin, VT et al. (1997): (Table 7) Composition of accessory spinel from plutonic rocks of the Amirante Arc. https://doi.org/10.1594/PANGAEA.733899
  8. Tatarin, IA; Badredinov, ZG; Sedin, VT et al. (1997): (Table 8) Representative microprobe analyses of minerals from dolerites of the Southern block, the Amirante Arc. https://doi.org/10.1594/PANGAEA.733900
  9. Tatarin, IA; Badredinov, ZG; Sedin, VT et al. (1997): (Table 9) Representative microprobe analyses of minerals from gabbro-norites of the Southern block, the Amirante Arc. https://doi.org/10.1594/PANGAEA.733901
  10. Tatarin, IA; Badredinov, ZG; Sedin, VT et al. (1997): (Table 10) Representative microprobe analyses of minerals from gabbroids and websterites of the Southern block, the Amirante Arc. https://doi.org/10.1594/PANGAEA.733950
  11. Derkachev, AN; Botsul, AI; Nikolaeva, NA (1997): (Table 17) Mineral composition of heavy subfraction from rocks and sediments of the Amirante Arc and the Seychelles Bank. https://doi.org/10.1594/PANGAEA.733951
  12. Derkachev, AN; Botsul, AI; Nikolaeva, NA (1997): (Table 18) Mineral composition of light subfraction from sedimentary rocks of the Amirante Arc. https://doi.org/10.1594/PANGAEA.733952
  13. Derkachev, AN; Botsul, AI; Nikolaeva, NA (1997): (Table 19) Chemical composition of clinopyroxenes from sediments and sedimentary rocks of the Amirante Arc. https://doi.org/10.1594/PANGAEA.733953
  14. Derkachev, AN; Botsul, AI; Nikolaeva, NA (1997): (Table 20) Chemical composition of amphiboles from sediments and sedimentary rocks of the Amirante Arc slope. https://doi.org/10.1594/PANGAEA.733954