• GEO-LEO
    • Deutsch
    • English
  • GEO-LEO
  • English 
    • Deutsch
    • English
  • Login
View Item 
  •   Home
  • Alle Publikationen
  • Geologie
  • View Item
  •   Home
  • Alle Publikationen
  • Geologie
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Subaqueous conglomerates above pre-LGM basal till: Another element of the ‘classic’ interglacial mountain-flank succession (Hötting Breccia Auct.) north of Innsbruck, Austria

Sanders, Diethard
Pernreiter, Sabine
DOI: https://doi.org/10.23689/fidgeo-1995
Sanders, Diethard; Pernreiter, Sabine, 2016: Subaqueous conglomerates above pre-LGM basal till: Another element of the ‘classic’ interglacial mountain-flank succession (Hötting Breccia Auct.) north of Innsbruck, Austria. In: E&G – Quaternary Science Journal; Vol.65, No.1, p.4-23, DOI 10.23689/fidgeo-1995.
 
Thumbnail
View/Open
vol65_no1_a01.pdf (6.880Mb)
Metadata Export:
Endnote
BibTex
RIS
  • Abstract
The “Hötting Breccia” near Innsbruck is a classic interglacial mountain-flank succession mainly comprising lithified alluvial fans and scree slopes. Directly NW of Innsbruck, a pre-LGM (Riss?) basal till >20 m in thickness overlies a plucked rock surface that records eastward ice flow. The till is dominated by clasts of carbonate rocks from the Northern Calcareous Alps; index clasts of the LGM ice stream are absent. The basal till is overlain by a package of conglomerate nearly 1 km in preserved lateral extent that dip at 20–30° South and show the same clast spectrum as the underlying till. The conglomerate – hitherto assigned to the Hötting Breccia – accumulated from fan deltas and/or scree slopes shed into a standing water body; it is overlain by younger, unlithified LGM to Holocene deposits. We suggest the following scenario: During decay of the ice stream that formed the basal till, the conglomerate package was deposited by paraglacial reworking of till into a lake or ice-marginal lake. The alluvial fans of the Hötting Breccia accumulated independently from the conglomerate package, and from a distinct alluvial-fan system. The age relation of the till/conglomerate package to the main part of the Hötting Breccia is unclear. Our results demonstrate that the rocks hitherto summarized as Hötting Breccia represent a compound of lithosomes of different origins and ages.
Statistik:
View Statistics
Collection
  • Geologie [658]
Subjects:
quaternary
interglacial
alps
till
conglomerate
Hötting Breccia
index clasts
GEO-LEO e-docs Lizenz

ImpressumPrivacyAbout usTerms of UseContact UsSend Feedback
DFGSUBFID GEOFID Montan
 

 

Submit here
Help

All of Geo-Leo e-docsCommunities & CollectionsBy Issue DateAuthorsSubjectsPeriodicalsTitlesThis CollectionBy Issue DateAuthorsSubjectsPeriodicalsTitles

Statistics

View Usage Statistics

ImpressumPrivacyAbout usTerms of UseContact UsSend Feedback
DFGSUBFID GEOFID Montan