Open AccessKineto‐stratigtraphic evaluation and presentation of glacial‐stratigraphic data, with examples from northern Samsø, Denmark
Author(s) -
HOUMARKNIELSEN MICHAEL,
BERTHELSEN ASGER
Publication year - 1981
Publication title -
boreas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.95
H-Index - 74
eISSN - 1502-3885
pISSN - 0300-9483
DOI - 10.1111/j.1502-3885.1981.tb00505.x
Subject(s) - glacial period , geology , meltwater , glacier , context (archaeology) , paleontology , cliff , geomorphology , physical geography , geography
Glacial‐stratigraphic methods used in Denmark are discussed and illustrated by a case study of Weichselian drift successions on Samsø. Detailed observations of lithological sequences, glacier‐induced deformations, glaciodynamic structures, and till fabric in cliff exposures are used to reconstruct flow directions of successive ice advances and run‐off patterns of meltwater. In this way kineto‐stratigraphic drift units are established. In addition to their directional elements, individual unit/sub‐units may show particular clast/microfossil/heavy mineral content. Such compositional characteristics only partially reflect first‐time long‐range transport from distant sources; local admixture of material from pre‐existing glacial and non‐glacial sediments may play an equally important role. In order that the relative significance of results obtained by different methods can be evaluated in a broader context, a standardized graphic chart for the presentation and correlation of glacial‐stratigraphic data has been prepared and used in this case study.