A Raman method to estimate the aromatization degree of carbonaceous matter (CM) was established, and calibrated by literature data respecting differences in acquisition procedures. The generated equations allowed a comparison of the G‐band width to vitrinite reflectance, and to additional structural organization parameter extracted from X‐ray powder diffraction. The relations between aromatization degree and peak temperatures from literature were then propagated to G‐band width parameter. The applicability of these geothermometers is demonstrated by the consistency of data obtained for carbonaceous chondrites with previous estimations. Since the CM aromatization is controlled by peak temperature and time span, it is possible to estimate the duration of chondrite’s heating events. The G‐band width relation to elemental ratio trends of organic matter in chondrites, interplanetary dust particles, glucose, and saccharose‐based semi‐coke favors synthesis by formose route. These findings provide new approaches for the future development of chemical kinetic models for organic matter of chondrites. A reliable chemical model may allow the external calibration of numerical models for accurately evaluating the peak temperatures and cooling durations of chondrites.

中文翻译：

---

拉曼光谱法评价陆地碳质物质芳构化及其在C球粒陨石中的应用

建立了估计碳质物质（CM）芳构化程度的拉曼方法，并通过考虑采集程序差异的文献数据进行了校准。生成的方程式可以比较G波段宽度与镜质体反射率，以及从X射线粉末衍射提取的其他结构组织参数。然后根据文献将芳香化程度与峰值温度之间的关系传播到G带宽参数。这些地热仪的适用性通过对碳质球粒陨石获得的数据与先前估计的一致性证明。由于CM芳香化受峰值温度和时间跨度的控制，因此可以估算球粒陨石加热事件的持续时间。G波段宽度与球粒陨石，行星际尘埃颗粒，葡萄糖和基于蔗糖的半焦中有机物元素比例趋势的关系，有利于通过有规路线合成。这些发现为球粒陨石有机物化学动力学模型的未来发展提供了新的方法。可靠的化学模型可以允许数值模型的外部校准，以准确评估球粒陨石的峰值温度和冷却时间。