Results 221 to 230 of about 379,518 (254)

Kauri Resins—Modern and Fossil

1969
The genus Agathis, a group of conifers found in the land areas between New Zealand and Malaysia, has several conspicuous resin-forming systems. Thus, the New Zealand species Agathis australis (Salisbury) produces resins, often in very large amount, in the heartwood, in resin canals in the bark, in resin canals in the leaves, in the leaf surface layers,
openaire   +1 more source

A Raman spectroscopic approach to the maturation process of fossil resins

Journal of Raman Spectroscopy, 2001
Raman spectra of a range of differently aged samples of natural resins (recent resins, copals, fossils resins from Tertiary to Early Cretaceous age) were taken for a comparative study of the age-induced maturation processes of the resins. It can be shown that a decrease in band intensity at around 1640 cm−1 due to loss of ν(CC) stretching vibrations ...
W. Winkler, E. Ch. Kirchner, A. Asenbaum, M. Musso   +3 more
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Occurrence of Fossil Resins in the Oil-Shales of the Punjab Saline Series

Nature, 1950
IN a recent discussion1 on the age of the Saline series, Dr. E. R. Gee disputes Prof. B. Sahni's evidence of micro-fossils for an Eocene age2 on two grounds: first, the discovery by Messrs. Ghosh, Sen and Bose3 of similar post-Palaeozoic micro-fossils in overlying beds of undoubted Cambrian age shows that Prof. B.
openaire   +2 more sources

Varieties of fossil resins of South Sakhalin and their molecular composition

Zapiski Vserossijskogo mineralogičeskogo obŝestva
This article provides the first up-to-date overview of the history of fossil resin finds in the southern part of Sakhalin Island. On the base of little-known facts and casual references scattered in geological literature, main locations of the amber-like fossil resins are reviewed and described. Peculiarities of their molecular composition were studied,
О. V. Martirosyan, M. A. Bogdasarov
openaire   +1 more source

Biomarkers in Fossil Resins as a Tool in Paleoenvironmental Reconstructions

IMOG 2023, 2023
J. Pańczak, P. Kosakowski, A. Zakrzewski   +2 more
openaire   +1 more source

Fossil Resin

Science, 1933
openaire   +2 more sources

Fossil Resins–Constraints from Portable and Laboratory Near-infrared Raman Spectrometers

Minerals (Basel, Switzerland), 2020
Grażyna Żukowska, Magdalena Dumańska-Słowik, Beata Naglik   +2 more
exaly  

Theoretical (DFT) and experimental (Raman and FTIR) spectroscopic study on communic acids, main components of fossil resins

Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 2020
Valentín G. Baonza, Alvaro Lobato, Oscar R. Montoro   +2 more
exaly  

Bees in Fossilized Resin

Bee World, 1994
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Resins and Fossil Resins

2012
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