Recent and fossil resins from New Zealand and Australia
Recent and fossil resins from New Zealand and Australia
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来自新西兰和澳大利亚的最新树脂和化石树脂
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
J. Frye
中科院分区：
文献类型：
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作者：
J. B. Lambert;S. C. Johnson;G. Poinar;J. Frye
比较了新西兰和澳大利亚化石树脂的~(13)C核磁共振波谱，并与现代和半固化材料的波谱进行了比较。绝大多数化石样本与现代Agathis树脂和北美化石树脂有很强的光谱相似性，后者被认为是Agathis的。与AGathis相关的光谱不同于现代膜亚纲和蓝膜藻属的光谱。来自澳大利亚和巴布亚新几内亚的一小部分晚白垩世树脂似乎来自不同的植物学来源，与来自阿肯色州的克莱本琥珀非常相似。外亚甲基碳的光谱共振随着时间的推移而退化，平均而言，它提供了与AGathis相关的化石树脂的地质年龄的近似测量。©1993 John Wiley&Sons，Inc.
The carbon-13 nuclear magnetic resonance spectra of fossil resins from New Zealand and Australia have been compared with those of modern and semifossilized materials. The great majority of the fossilized samples have strong spectral similarities to modern Agathis resins and to North American fossil resins, which have been attributed to Agathis. The Agathis-related spectra are different from those of modern Hymenaea and Araucaria. A small subgroup of Late Cretaceous resins from Australia and Papua New Guinea appears to derive from a different botanical source and shows strong resemblances to Claiborne amber from Arkansas. The spectral resonances of the exomethylene carbons degrade over time and on average provide an approximate measure of the geological age of Agathis-related fossil resins. © 1993 John Wiley & Sons, Inc.