Abstract
The geology of Lake Sevan is characterized by the structure of a pull-apart basin. Methane emission from the lake surface correlates with evidence of physical and chemical water properties, remote sensing, etc., and suggests its possible emission from active fault zones at the lake bottom, as well as emission of biogenic methane from the fermentation of bottom organic remains. Correlation with anomalies in the lake bottom geochemistry suggests a high permeability of active fault zones and suggests that geodynamic, seismic and geochemical activity across the fault zones during the buildup to the M=7.1 Spitak earthquake led to plankton depression, which resulted in a large number of fish dying in 1984, and ended with a seismic disaster in 1988.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 2 November 1999 · Accepted: 27 January 2000
Rights and permissions
About this article
Cite this article
Karakhanian, A., Tozalakyan, P., Grillot, J. et al. Tectonic impact on the Lake Sevan environment (Armenia). Environmental Geology 40, 279–288 (2001). https://doi.org/10.1007/s002540000216
Issue Date:
DOI: https://doi.org/10.1007/s002540000216