Computer Science
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988gecoa..52.1255s&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 52, Issue 5, pp.1255-1264
Computer Science
1
Scientific paper
Three sedimentary sequences and a number of crude oils have been analysed for trimethylnaphthalenes (TMNs) using gas chromatography. The sediments were found to contain enhanced relative abundances of 1,2,5-TMN and 1,2,7-TMN in samples of Cretaceous age and younger; this was especially pronounced in lower maturity sediments containing type III organic matter. Older samples containing type III organic matter were found to contain enhanced relative abundances of 1,2,5-TMN and lower relative abundances of 1,2,7-TMN. 1,2,7-TMN appears to be derived directly from the structural degradation of oleanane-type triterpenoids present in angiosperms, and as such is proposed as a marker for this class of plant and indirectly, therefore, also for samples deposited since the Early Cretaceous. The crude oils have been classified according to their trimethylnaphthalene compositions. This classification enables crudes of higher plant origin to be identified and to be further classified according to whether the organic matter pre-dated or post-dated the evolution of angiosperms.
Alexander Robert
Kagi Robert I.
Strachan Michael G.
No associations
LandOfFree
Trimethylnaphthalenes in crude oils and sediments: Effects of source and maturity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Trimethylnaphthalenes in crude oils and sediments: Effects of source and maturity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trimethylnaphthalenes in crude oils and sediments: Effects of source and maturity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-854638