Accordingly, on a surface of long term steady erosion TCN concentrations are suitable for the determination of the surface denudation rate.
The method is suitable for the quantification of surface denudation rates (on uncovered or soil mantled surfaces) and for the determination of average erosion rates of entire drainage basins.
Contact Zsófia Ruszkiczay-Rüdiger [email protected]örsi út 45., H-1112, Budapest, Hungary Support The laboratory was equipped with the help of the National Scientific Found of Hungary (OTKA PD 83610) and with contributions of the Lendület program of the Hungarian Academy of Sciences (LP2012-27/2012).
Weathering and erosion encapsulate a diverse suite of processes that sculpt landscapes, generate soil, and deliver sediments, nutrients, and solutes to streams and the oceans.
Determination of denudation rates In case of steady erosion TCN concentration within the rock is approaching a secular equilibrium.
The faster is the denudation the lower is the equilibrium level.
Numerical age determination of the terraces is essential for the determination of the incision rate of the Danube and connected uplift rate of the TR.
First application of in-situ produced cosmogenic nuclides in the region was the age determination of strath terraces of the Danube using in situ produced cosmogenic Be depth profiles revealed that the onset of the incision of the Danube was probably triggered by the mid-Pleistocene climate transition between 1.2 and 0.7 ka (Ruszkiczay-Rüdiger et al., 2016a).
In the Retezat Mts (Southern Carpatians, Romania) a revised glaical chronology together with novel Be surface exposure ages of the moraines suggest that the last small glaciers disappeared after ~13.5 ka.Quaternary sediments and landforms of aeolian origin suggest that the role of wind erosion in the Pannonian Basin was also significant during the Quaternary.Aeolian denudation was studied in the western part of the Pannonian Basin using in situ produced cosmogenic Be depth profiles.During 2014-2015, partial treatment of a sample sets (crushing, sieving, quartz purification and etching) occurred in our lab and the extraction chemistry of the cosmogenic nuclides occurred at the CEREGE LN2C (Aix en Provence, France), the location of the accelerator mass spectrometry (AMS) measurements (Ruszkiczay-Rüdiger et al., 2016b).In 2015-2016 years already the complete chemical processing of test sample sets was possible, and first results and their interpretation are on their way (Ruszkiczay-Rüdiger et al., 2016; 2017a,b; Neuhuber et al., 2016) .The measured TCN concentration is representative of the exposure age of the studied landform (1) if the formation of the landform was instantaneous and (2) if no surface denudation or (3) sediment accumulation has occurred since its formation.Glacial landforms, fluvial terraces and lava flows are among the most frequent targets of exposure age determination.Burial age determination In contrast with exposure age and denudation rate determinations, burial age dating is based on the radioactive decay of cosmogenic nuclides.Those rocks and sediments are suitable for burial dating which once were exposed to cosmic irradiation, but have been buried since then.This time range covers the entire Quaternary and Pliocene hence it has occupied a significant role among the tools of Quaternary geochronology.Most important radioactive TCN in geological and geomorphological research are Ne.