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Terpenoid composition and botanical affinity of Cretaceous resins from India and Myanmar

DSpace at IIT Bombay

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Title Terpenoid composition and botanical affinity of Cretaceous resins from India and Myanmar
 
Creator DUTTA, S
MALLICK, M
KUMAR, K
MANN, U
GREENWOOD, PF
 
Subject TERTIARY BOUNDARY
FOSSIL RESINS
BURMESE AMBER
HYDROCARBONS
MEGHALAYA
SEDIMENTS
CONIFERS
BASIN
OILS
DITERPENOIDS
Cretaceous resins
India
Myanmar
Py-GC-MS
Thermochemolysis-GC-MS
 
Description Fossil resins from the Cretaceous sediments of Meghalaya, India and Kachin, Myanmar (Burma) were analysed using Curie point pyrolysis-gas chromatography-mass spectrometry and thermochemolysis gas chromatography-mass spectrometry to help elucidate their botanical source. The major pyrolysis products and methyl-esterified thermochemolysis products of both the resins were abietane and labdane type diterpenoids with minor amount of sesquiterpenoids. The thermochemolysis products also included methyl-16,17-dinor callitrisate, methyl-16,17-dinor dehydroabietate and methyl-8-pimaren-18-oate-the latter two from just the Myanmarese resin. The exclusive presence of both labdane and abietane diterpenoids and the lack of phenolic terpenoids may suggest that the studied Cretaceous resins were derived from Pinaceae (pine family) conifers. (C) 2010 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2012-06-26T06:26:49Z
2012-06-26T06:26:49Z
2011
 
Type Article
 
Identifier INTERNATIONAL JOURNAL OF COAL GEOLOGY,85(1)49-55
0166-5162
http://dx.doi.org/10.1016/j.coal.2010.09.006
http://dspace.library.iitb.ac.in/jspui/handle/100/14034
 
Language English