Ahlberg, A.; Herman, A.B.; Raikevich, M.; Rees, P.M. and Spicer, R.A.
|DOI (Digital Object Identifier) Link:||http://doi.org/10.1080/11035890201244197|
|Google Scholar:||Look up in Google Scholar|
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.
|Item Type:||Journal Article|
|Keywords:||Cretaceous; Dropstones; Lonestones; Russia|
|Academic Unit/Department:||Science > Environment, Earth and Ecosystems
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||Robert Spicer|
|Date Deposited:||20 Jul 2006|
|Last Modified:||14 Jan 2016 16:12|
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