Neotectonics in the Primorsky Fault zone

Morphological and tectonic field studies in the Primorsky Fault zone, a maj or rift structure in the Baikal region, revealed signature of neotectonic a ctivity evident as microfaulting (conjugate normal faults) in Late Pleistoc ene-Holocene unconsolidated sediments. The reconstructed local stress field corresponds to northeastward extension. A section across an archeologic re lic showed evidence of stony ejecta related in space and time to the Sarma earthquake that occured at the Pleistocene-Holocene boundary. A new approac h has been proposed for estimating the degree of crustal breakage, which ma de a basis For the respective mapping of the Primorsky Fault zone.