The Chamber of Commerce and Industry of the Tyumen Region said in a message that representatives of companies such as Tyumen-Pribor LLC, Tyumen Machine-Building Plant (engaged in production of driven clutch disks for domestic and foreign freight and passenger vehicles), Zhizn company (engaged in peat and sapropel
production) and SIBNA company (the latest technologies in the field of commercial accounting of energy resources) will be involved in the negotiations.
Thereby the main part of the received dates from the Middle Volga region Pit-Comb Ware correspond with the chronology of similar ware in the Volga--Oka interfluve which is founded on dating the samples of charcoal, peat, sapropel
, snuff, wood and bones.
Quaternary sediments are represented mainly by clays, loams, sandy loams, sands, clayey sands, boggy sediments (silt, sapropel
, peat) in local lake depressions.
Conventionally, organic sediment horizons including sapropel
(Niessen et al.
Diagenic transformation of sapropel
from Lake Dukhovoe (East Baikal region, Russia), Procedia Earth and Planetary Science 7: 81-84.
Mandryko et al  presents organic-mineral fertilizers containing peat, sapropel
, manure, seston, charcoal, brown coal, bone meal and organosilicon compounds.
Depending on the grade of thermal maturity, black shales are often referred to as sapropel
, bituminous shale, or oil shale.
The effects of calcareous sapropel
application on the changes of Haplic Luvisols chemical properties and crop yield, Plant, Soil and Environment 51: 539-544.
Main characteristics of Lake Vortsjarv monitoring stations Sampling Geographical Distance (km) Bottom station coordinates from the sediments nearest river (Raukas & mouth or shore Tavast, 2002) of the lake Riiska 58[degrees]06'20"N, 0.6 Sapropel
26[degrees]04'38"E Pahksaar 58[degrees]07'33"N, 0.65 Sapropel
26[degrees]04'46"E Ohne 58[degrees]12'07"N, 0.9 Sapropel
26[degrees]01'06"E Tanassilma 58[degrees]23'06"N, 1.8 Sandy clay 26[degrees]00'27"E and clay Tarvastu 58[degrees]16'43"N, 1.5 Sapropel
25[degrees]58'06"E Joesuu 58[degrees]22'51"N, 0.9 Till 26[degrees]06'57"E Sula Kuru 58[degrees]09'26"N, 0.5 Silty sand 26[degrees]02'40"E Tamme 58[degrees]16'21"N, 5.2 Sapropel
26[degrees]02'41"E Karikolga 58[degrees]20'14"N, 4.9 Sandy and 26[degrees]02'44"E silty sapropel
The project for the extraction and application of sapropel
fertilizers was developed by researchers at the Institute of Oceanology at the Bulgarian Academy of Sciences (IOBAS).