 |
| Titel |
Geochronological reconsideration of the eastern European key loess section at Stayky in Ukraine |
| VerfasserIn |
A. Kadereit, G. A. Wagner |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1814-9324
|
| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 10, no. 2 ; Nr. 10, no. 2 (2014-04-24), S.783-796 |
| Datensatznummer |
250116953
|
| Publikation (Nr.) |
 copernicus.org/cp-10-783-2014.pdf |
|
|
|
|
|
| Zusammenfassung |
| Event-stratigraphical correlations between regional terrestrial sedimentary
archives and marine or ice-core records that provide climate history are
highly desirable for a deeper understanding of the effects of global climate
change. However, such correlations are not simple, as the terrestrial
records tend to be floating and fragmentary, and usually show varying
sedimentation rates. Therefore, a reliable chronometric framework is a
prerequisite for any event stratigraphy involving terrestrial archives. We
propose that the age model underlying the event-stratigraphical approach for
the eastern European key loess section at Stayky in Ukraine needs revision.
Here we explore why it is unlikely that the Middle Pleniglacial Vytachiv
Soil developed during Greenland interstadial (GIS) 8, and why the embryonic
soils in the upper part of the Upper Pleniglacial part of the loess section
most likely post-date the Heinrich 2 event. As a consequence, the revised
age-model challenges the earlier suggested correlation of the suite of
incipient soils above the Vytachiv Soil with Greenland Interstadials, which
was supposed to start with GIS7 but for which matching from after GIS5 seems
more likely. The revised chronology suggests that the transition from Middle
to Upper Pleniglacial environmental conditions at the eastern European key
section occurred during the final phase of marine isotope stage (MIS) 3.
Thus, the picture appears to be in accordance with that of the western
European key section at Nussloch. This points to a common driver of
palaeo-environmental change in both regions, such as early late glacial
maximum (LGM) advances of the Arctic ice shield or changes of the North
Atlantic circulation and sea-ice distribution associated with changes in the
palaeowind field relevant to aeolian loess deposition and soil formation. To
test and substantiate the alternative age model, more chronologies for
well-stratified loess sections throughout the European loess belt are required. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|