Phases of aeolian accumulation on the Vistula Spit (Southern Baltic Sea) in the light of TL dating and analysis of a digital elevation model

Abstract

. (2012) -Phases of ae olian ac cu mu la tion on the Vistula Spit (South ern Bal tic Sea) in the light of TL dat ing and anal y sis of a dig i tal el e va tion model. Geol. Quart., 56 (2): 345-352, doi: 10.7306/gq.1026The gen e sis of the Vistula Spit (South ern Bal tic Sea) in the Postlitorina pe riod is re garded as oc cur ring by grad ual ad di tion of suc ces sive dune ridges along the en tire length of the form. Based on the de gree of soil pro file de vel op ment and ra dio car bon dat ing of or ganic sed iments three main stages of ae olian pro cesses are usu ally rec og nized. GIS anal y sis of a dig i tal el e va tion model (DEM) and thermoluminescence dat ing of dune sand sup ports the model of pro gres sive de vel op ment of dune ridges, and has iden ti fied four pe ri ods of in tense ae olian ac tiv ity. These were es tab lished 5860-5400, 1930-1610, 1200-900 years ago from the pres ent, and from 500 years ago. Stanis³aw Fedorowicz and Gra¿yna Wysiecka, De part ment of Geo mor phol ogy and Qua ter nary Ge ol ogy, Gdañsk Uni ver sity,

Holocene development of the Vistula Spit (Baltic Sea coast) based on multidisciplinary investigations

“…Tomczak, 1990, 1995). Our results indicate a much older period for the brown dune formation than Tomczak (1995) assumed, and confirm the results of TL dating obtained by Fedorowicz et al (2009, 2012).…”

“…In addition, the dating results, around 4960 years, indicate that it became stabilized later than the rest of the dated brown dunes . The TL ages for the same dune ridge (Fedorowicz et al, 2012) are in the range of 5400-5860 years, i.e. similar to other brown dunes of the Vistula Spit.…”

“…More recent data, based on TL ages of dunes (Fedorowicz et al, 2009, 2012), indicate four periods of intense aeolian activity: 5860–5400, 1930–1610, 1200–900 years ago, and during the last 500 years.…”

Reconstruction of the Dead (Grey) Dune evolution along the Curonian Spit, Southeastern Baltic

“…Moreover, in some areas, as in the Vistula Spit (Poland), phases of intense aeolian activity (Fedorowicz et al, 2012) fit well with the calm soil-forming periods in the Curonian Spit as determined during our investigations. Thus, the question of relationship between climate and dunes/ paleosols formation remains open to future investigations.…”

“…At that time there was not any significant displacement of the entire dune massifs. The distribution of the ancient aeolian massifs in the Curonian Spit possibly was similar as in the present Vistula Spit where the youngest dunes were concentrated in the seaward part of the Spit (Fedorowicz et al, 2012). In our opinion, a relatively young age of the Great Dune Ridge has been also confirmed by the analysis of cartographic materials.…”