- Tytuł:
- Ice-sheet dynamics of warta glaciation (saale) in the marginal zone of Knyszewicze area, north eastern Poland
- Autorzy:
-
Rychel, Joanna
Woronko, Barbara
Karasiewicz, Mirosław T.
Szymczuk, Paweł
Morawski, Marcin - Powiązania:
- https://bibliotekanauki.pl/articles/2025794.pdf
- Data publikacji:
- 2015
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
ice lobe
marginal zone
glaciotectonic disturbances
thrust-block push moraines
morpholineaments - Opis:
- The pa per pres ents a re search on a mar ginal zone near Knyszewicze in the south ern part of Sokó³ka Hills (north east ern Po land). Ter mi nal mo raine hills are ar ranged amphitheatrically in a lobal pat tern. Dy nam ics of the Knyszewicze frontal ice-sheet lobe dur ing the Saale Gla ci ation and suc ces sive stages of the mar ginal zone near the vil lage of Knyszewicze were re con structed based on sed i men tary and geomorphological anal y sis, us ing a dig i tal el e va tion model and morpholineaments. Three main phases of the Knyszewicze gla cial-lobe ac tiv ity were iden ti fied in clud ing ac cu mu la - tion of glaciofluvial de pos its, ad vances of the ice mar gin and ice-lobe re treat. Mo raine hills de vel oped at a sta ble ice-lobe ter mi nus, ini tially as short end-mo raine fans with the fol low ing se quence of lithofacies GhÞSGhÞSh or GmÞGhÞSh. Such a se quence in di cates cy clic sheet-floods. Dur ing a small but dy namic ad vance of the ice sheet termi nus, these de pos its were moved for ward and monoclinally folded, then fur rowed with slop ing faults due to hor i zontal pres sure. Typ i cal thrust-block push mo raines de vel oped in this way. Ice sheet ad vance took place when per ma frost was pres ent in the sub stra tum and very high wa ter pres sure oc curred at gla cial ter mi nus. In side a lobal con fig u ra tion of mo raines, there is a rich in ven tory of gla cial forms with a clas sic ter mi nal de pres sion in the cen tral part. Based on this landform pat tern, their shape, rhythm and glaciotectonic dis tur bances, the land re lief may be re ferred to as a hill-hole pair. The struc ture of Horczaki Knoll, de pos ited on the sub-Qua ter nary tec tonic struc ture, sig nif i cantly con trib uted to a de vel op ment of this mar ginal zone.
- Źródło:
-
Studia Quaternaria; 2015, 32; 79-90
1641-5558
2300-0384 - Pojawia się w:
- Studia Quaternaria
- Dostawca treści:
- Biblioteka Nauki
Artykuł