BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Comparison of the geochemical profiles of Lake Khindiktykol (Tuva)
  bottom sediments cores according to the scanning µXRF-SR.
DTSTART;VALUE=DATE-TIME:20200713T140200Z
DTEND;VALUE=DATE-TIME:20200713T140300Z
DTSTAMP;VALUE=DATE-TIME:20260416T012415Z
UID:indico-contribution-1812@indico.inp.nsk.su
DESCRIPTION:Speakers: Andrey Darin (Sobolev Institute of Geology and Miner
 alogy SB RAS)\nTwo cores (67 and 105 cm) of high mountain Lake Khindiktyko
 l (Tuva) bottom sediments were sampling by a hummer gravity corer from dep
 ths of 64\,7 m in the middle of the lake and of 31\,3 m in the small bay. 
 The upper 170 mm of each core was studied by scanning micro-XRF with synch
 rotron radiation (µXRF-SR). The analysis was carried out at the experimen
 tal station "Elemental analysis" in the joined Research Center SSTRC. Expe
 rimental conditions: excitation energy 23 keV\, dimensions of the exciting
  radiation beam 1.5 mm in height and 10 mm in width of the sample. The sca
 nning step was 2 mm in height of the sample. The distributions of more tha
 n 20 rock-forming and trace elements over the core depth were obtained. Th
 e distribution of Ti\, Mn\, Fe\, Ni\, Ga\, Y in both cores coincides well.
  This suggests one source of terrigenous material and similar sedimentatio
 n rates. Large discrepancies are visible in the distribution of Ca\, As\, 
 Br\, Sr\, Mo. These elements are characteristic of carbonates and biogenic
  material. The obtained data indicate differences in the sources of matter
  entering the bottom sediments in different parts of the lake. Additional 
 lithological and geochemical studies are required when choosing bottom sed
 iments will be used to climatic reconstructions.\nThis work was financiall
 y supported by the RSF project. № 20-17-00110. The work was done at the 
 joined Research Center SSTRC on the basis of the VEPP-4 - VEPP-2000 comple
 x at BINP SB RAS\, using equipment supported by project RFMEFI62119X0022.\
 n\nhttps://indico.inp.nsk.su/event/24/contributions/1812/
LOCATION:
URL:https://indico.inp.nsk.su/event/24/contributions/1812/
END:VEVENT
END:VCALENDAR