Problems of TL dating of the Mesopleistocene loess deposits in the Podillya and Pokuttya regions (Ukraine)

Abstract

Abstract:In many papers different authors was described problem of systematic underestimation of TL ages for sediments older then 100 ka. We presented the results which probably are not significantly rejuvenated. This is another example of the TL dates made in Lublin laboratory which are likely in agreement with the stratigraphic interpretation. In 2002 Kusiak et al. published the TL ages ranging from 200 to 800 ka for the Zahvizdja loess profile in Ukraine. These first promising results of TL dating of so old deposits encouraged us to undertake further studies. In next years were discovered other Ukrainian loess profiles with the Middle and Lower Pleistocene deposits, among others in the Skala Podils'ka, Mamalyha and Vendychany sites. The thermoluminescence dating made for these profiles in the Lublin laboratory gave the next, after Zahvizdja, series of 15 TL ages ranging from 200 to 700 ka. This way we confirmed the possibility of TL dating of the deposits older than 400 ka BP.

Luminescence dating of volcanic eruptions in Datong, northern China

“…Besides, TL signals are more stable than OSL signals and may be more proper for dating older deposits. Kusiak et al (2013) have confirmed the possibility of TL dating method for obtaining ages older than 400 ka.…”

Magnetostratigraphy of the loess-palaeosol key Palaeolithic section at Korolevo (Transcarpathia, W Ukraine)

“…These questions and dating methods were discussed by Kusiak (2002), Kusiak et al (2002Kusiak et al ( , 2013 who dated the old loess deposits in other sites occurring on high terraces in the basins of the Upper and Middle Dniester River and Prut River (Nawrocki et al, 2002;Boguckyj et al, 2009Boguckyj et al, , 2011Łanczont et al, 2011). The BrunheseMatuyama boundary was found in some of them.…”

“…Secondly, many hiatuses occur in the profile. Our stratigraphic interpretation of the Korolevo profile is based on the analysis of layer sequence, the situation of the MatuyamaeBrunhes boundary in the profile, and the comparison with well-examined old loess sections occurring in Western Ukraine (Gozhik et al, 1995;Boguckyj et al, 2009;Łanczont et al, 2011;Kusiak et al, 2013). The low-coercivity component of magnetization, common for the loess and soil deposits from Korolevo, does not provide any clustered palaeodirection.…”

How to resolve Pleistocene stratigraphic problems by different methods? A case study from eastern Poland

“…5 and 6) was es timated by thermoluminescence (TL). Al though this method is not thought to pro vide good re sults for de pos its older than 300-400 ka (Frechen et al, 1999;Bluszcz, 2000), we use it because some stud ies (Berger et al, 1992;£anczont et al, 2011;Kusiak et al, 2013) show that it is pos si ble to ac cu rately date de pos its up to 500-800 ka. For con trol, two sam ples from log 1 were dated by in fra red light stim u lated lu mi nes cence (IRSL), which al lows dat ing of de pos its up to 300 ka (e.g., Yi et al, 2012).…”

“…(1) the 10°C wide re gion of the glow peak (TL MAX ) (Kusiak, 2008;£anczont et al, 2011;Kusiak et al, 2013), (2) the 100°C wide re gion (270-370°C; TL INT ) con tain ing the glow peak (Frechen, 1992). The pla teau test was car ried out; for all samples the glow peak oc curred within the pla teau.…”