Rapid heating of carbonaceous matter by igneous intrusions in carbon-rich shale, Isle of Skye, Scotland: an analogue for heating of carbon in impact craters?
Rapid heating of carbonaceous matter by igneous intrusions in carbon-rich shale, Isle of Skye, Scotland: an analogue for heating of carbon in impact craters?
复制标题
苏格兰斯凯岛富碳页岩中的火成岩侵入对碳质物质的快速加热：类似于撞击坑中碳的加热？
DOI：
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发表时间：
2006
影响因子：
1.7
通讯作者：
J. Parnell
中科院分区：
文献类型：
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作者：
P. Lindgren;J. Parnell
有机质对高温事件的反应对天体生物学很重要，因为它控制着碳在几个过程中的生存，这些过程可能对生命的起源和传播至关重要。撞击坑是一种广泛存在的高温过程。碳在撞击事件中的行为还没有被很好地理解。但在陆地地质记录中，也有可能研究有机物对高温过程的响应的其他例子。在这项研究中，我们报道了苏格兰斯凯岛第三系火成岩(辉绿岩岩床)与富含碳的侏罗纪泥岩的相互作用。尽管火成岩侵入的温度很高，但碳在榴辉岩-页岩接触处和页岩飞地中得到了保存，页岩在那里发生了部分熔融。尽管火成岩侵入的温度远低于撞击时的温度，但它是一个有价值的类比，因为它代表着高温迅速引入富碳岩石。
The response of organic matter to high-temperature events is important to astrobiology, as it governs the survival of carbon during several processes that may be critical to the origin and spread of life. Impact cratering is a widespread high-temperature process. The behaviour of carbon during impact events is not well understood. But there is the potential to examine other examples of the response of organic matter to high-temperature processes in the terrestrial geological record. In this study, we report on the interaction of Tertiary igneous intrusions (dolerite sills) and carbon-rich Jurassic mudrocks on the Isle of Skye, Scotland. Despite the high temperatures of the igneous intrusion, carbon has been preserved at the dolerite–shale contact and in shale enclaves where partial melting of the shale has occurred. Even though the temperatures achieved by igneous intrusion are much lower than during impact events, it is a valuable analogue, because it represents a rapid introduction of high temperatures to a carbon-rich rock.