Early Cretaceous radiolarians from the Spongtang massif, Ladakh, NW India: Implications for Neo-Tethyan evolution

Baxter, A.T., Aitchison, J.C., Ali, J.R. and Zyabrev, S.V. (2010) Early Cretaceous radiolarians from the Spongtang massif, Ladakh, NW India: Implications for Neo-Tethyan evolution. Journal of the Geological Society, 167 3: 511-517. doi:10.1144/0016-76492009-099


Author Baxter, A.T.
Aitchison, J.C.
Ali, J.R.
Zyabrev, S.V.
Title Early Cretaceous radiolarians from the Spongtang massif, Ladakh, NW India: Implications for Neo-Tethyan evolution
Journal name Journal of the Geological Society   Check publisher's open access policy
ISSN 0016-7649
2041-479X
Publication date 2010-01-01
Year available 2010
Sub-type Article (original research)
DOI 10.1144/0016-76492009-099
Open Access Status Not Open Access
Volume 167
Issue 3
Start page 511
End page 517
Total pages 7
Place of publication Bath, Avon, United Kingdom
Publisher Geological Society Publishing House
Language eng
Formatted abstract
The discovery of two Early Cretaceous (mid-Valanginian-mid-Aptian range) radiolarian faunal assemblages from ribbon-bedded cherts collected near Photoskar in northern Ladakh, NW India, provides the first robust biostratigraphic age constraints associated with the Spongtang massif. This klippe of relict Neotethyan suprasubduction-zone ophiolitic rocks and related arc volcanic rocks crops out 30 km south of the Indus suture in Ladakh. The radiolarian assemblages, the age assignment of which lies between published radiometric ages, provide new constraints on the evolution of this intra-oceanic island arc system. Critically, from them it can be inferred that the system was appreciably long-lived (Jurassic-Cretaceous) and more continuous than is commonly considered.
Keyword Biostratigraphy
Cretaceous
Fossil assemblage
Ophiolite
Radiolaria
Subduction Zones
Tethys
Volcanic rocks
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID HKU7001/07
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Geography, Planning and Environmental Management Publications
 
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Created: Wed, 29 Jul 2015, 20:36:48 EST by Helen Smith on behalf of School of Geography, Planning & Env Management