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We performed petromagnetic, elemental composition and mineralogical investigations of samples from lake Bolshoe Miassovo, Chelyabinsk region, Russia (55°9?59.89?N 60°20?51.82?E). Based on seismoacoustic investigation 5 long (up to 5.3 m) cores were collected by special hydraulical core extractor constructed in institute. For core sampling were choosen places with continuous sedimentation and absence of gas diffusion. Samples for laboratory investigations were selected layer by layer in intervals of 2 cm. The princ...

In August 2018 an expedition was organized to Lake Sevan (Armenia), where seismoacoustic studies and the selection of short cores of bottom sediments for laboratory investigations were carried out. Five seismoacoustic sections revealed a bedding pattern of bottom sediments. The thickness of sediments reaches ~ 14 m. Laboratory studies included: radiocarbon dating, measuring magnetic susceptibility, measuring coercive parameters, obtaining thermomagnetic diagrams, determining the elemental composition of sediments,...

We performed seismoacoustic and magnetic investigations of samples taken from Lake Bolshoe Miassovo (Chelyabinsk region, Russia) in 2018. Before sampling, seismoacoustic investigations were conducted in order to study stratification in sediments, reconstruct the reservoir?s history and select core locations with undisturbed stratification. A special hydraulic corer was used for taking long core samples. Five cores up to 5 meters long were obtained. For laboratory investigations, all cores have been cut into smalle...