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- Q4671316 subject Q7034677.
- Q4671316 subject Q7037488.
- Q4671316 subject Q7478371.
- Q4671316 subject Q8580170.
- Q4671316 subject Q8582018.
- Q4671316 abstract "Academician Ridge is an underwater, structural high separating two of Lake Baikal's three basins, the Central and North basins. Situated in the central part of the Baikal Rift, it serves as an "accommodation zone", transferring "motion between faults of similar displacement but different orientation" (Hutchinson et al., 1992). The ridge is bounded by two large normal faults, the Primorsky Fault on the northwest and the Olkhon Fault on the southeast, and an oblique-slip fault, the Academician Fault, that runs along the crest of the ridge. The margins of the ridge, Olkhon Island to the southwest and the Ushkanie Islands to the northeast, are above lake level while the center of the ridge is submerged to depths of 350–400 m (Kuzmin et al., 2000). Academician Ridge represents a unique sedimentary environment within Lake Baikal. The depths of the two basins it separates, about 900 m in the North Basin and about 1600 m deep in the Central basin, isolate the ridge from mass-flows and turbidites. Therefore, sedimentation on Academician Ridge is restricted to fine, continuous hemipelagic sedimentation with dispersed coarse-grained sediment deposited by ice rafting (Kuzmin et al., 2000). The stratigraphy observed in boreholes drilled into Academician Ridge shows that the upper sequence of continuous hemipelagic deposits, which are consistent with a bathymetric high in a deep lacustrine environment, is underlain by a lower sequence that is consistent with prograding, deltaic deposits in a shallow-water environment (Mats et al., 2000). This change from a shallow-water environment to a deep-water environment represents two things: one, that Academician Ridge experienced gradual flooding and, two, that the presence of a lake in the North Basin occurred long after the presence of a lake in the Central and South basins first occurred (Mats et al., 2000). Academician Ridge also plays an important role in deep-water mixing processes and the circulation of bottom currents. Water with a higher salinity than the lake is fed to the Central Basin by the Selenga River. In contrast, the Upper Angara River feeds the North Basin with fresh water. The result is dense, more saline surface waters from the Central Basin flowing northeast and passing over Academician Ridge into the less dense, less saline waters of the North Basin. The saline surface water then sinks along the density gradient to replenish the deep bottom waters of the North Basin (Francus and Karabanov, 2000; Colman et al., 2003).Timeline of Major Events".
- Q4671316 thumbnail Relief_Baikal.png?width=300.
- Q4671316 wikiPageWikiLink Q1501943.
- Q4671316 wikiPageWikiLink Q1994702.
- Q4671316 wikiPageWikiLink Q23397.
- Q4671316 wikiPageWikiLink Q4391037.
- Q4671316 wikiPageWikiLink Q5513.
- Q4671316 wikiPageWikiLink Q5711878.
- Q4671316 wikiPageWikiLink Q7034677.
- Q4671316 wikiPageWikiLink Q7037488.
- Q4671316 wikiPageWikiLink Q7478371.
- Q4671316 wikiPageWikiLink Q756774.
- Q4671316 wikiPageWikiLink Q8580170.
- Q4671316 wikiPageWikiLink Q8582018.
- Q4671316 point "53.78333333333333 108.43333333333334".
- Q4671316 type SpatialThing.
- Q4671316 comment "Academician Ridge is an underwater, structural high separating two of Lake Baikal's three basins, the Central and North basins. Situated in the central part of the Baikal Rift, it serves as an "accommodation zone", transferring "motion between faults of similar displacement but different orientation" (Hutchinson et al., 1992).".
- Q4671316 label "Academician Ridge".
- Q4671316 lat "53.78333333333333".
- Q4671316 long "108.43333333333334".
- Q4671316 depiction Relief_Baikal.png.