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Enigmatic Late Cretaceous high palaeo-latitude lonestones in Chukotka, northeasternmost Asia

Ahlberg, Anders LU ; Herman, AB ; Raikevich, M ; Rees, A and Spicer, RA (2002) In GFF 124(4). p.197-199
Abstract
Well-rounded cobbles were encountered within a low-energy restricted marine organic-rich deposit of latest Cretaceous age in Chukotka, NE Asia. The clasts are hydrodynamically incompatible with the inferred quiet depositional environment of the host sediment. Driftwood capable of tree-rafting, glacial striations, gastrolith clast clustering, and disrupting clast impact impressions typical of volcanic ejecta were absent, as were signs of traction currents. If indeed ice-rafting is responsible, this supports recent climate models and palaeobotanical data which favour seasonal marine ice cover of high northern latitudes over a wide span of boundary conditions.
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Russia, dropstones, lonestones, Cretaceous
in
GFF
volume
124
issue
4
pages
197 - 199
publisher
Taylor & Francis
external identifiers
  • wos:000181306200003
  • scopus:3843133246
ISSN
2000-0863
DOI
10.1080/11035890201244197
language
English
LU publication?
yes
id
3e4a8302-59bd-41a9-adef-46cb753649d0 (old id 317332)
date added to LUP
2016-04-01 11:58:52
date last changed
2025-10-14 10:48:50
@article{3e4a8302-59bd-41a9-adef-46cb753649d0,
  abstract     = {{Well-rounded cobbles were encountered within a low-energy restricted marine organic-rich deposit of latest Cretaceous age in Chukotka, NE Asia. The clasts are hydrodynamically incompatible with the inferred quiet depositional environment of the host sediment. Driftwood capable of tree-rafting, glacial striations, gastrolith clast clustering, and disrupting clast impact impressions typical of volcanic ejecta were absent, as were signs of traction currents. If indeed ice-rafting is responsible, this supports recent climate models and palaeobotanical data which favour seasonal marine ice cover of high northern latitudes over a wide span of boundary conditions.}},
  author       = {{Ahlberg, Anders and Herman, AB and Raikevich, M and Rees, A and Spicer, RA}},
  issn         = {{2000-0863}},
  keywords     = {{Russia; dropstones; lonestones; Cretaceous}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{197--199}},
  publisher    = {{Taylor & Francis}},
  series       = {{GFF}},
  title        = {{Enigmatic Late Cretaceous high palaeo-latitude lonestones in Chukotka, northeasternmost Asia}},
  url          = {{http://dx.doi.org/10.1080/11035890201244197}},
  doi          = {{10.1080/11035890201244197}},
  volume       = {{124}},
  year         = {{2002}},
}