恐龙化石风化效应的TM耦合分析研究

Analysis and Study on TM Coupling Method to Weathering Effect of Dinosaur Fossil

摘要:

恐龙化石对研究地球演化、生物进化、地层对比、地质年代、古环境、古地理、古气候等方面具有重要的科学价值。但恐龙化石发掘后面临着严重的风化问题，许多化石发掘后十几年甚至几年内就迅速遭受风化破坏。为深入研究探索恐龙化石地质遗迹的深层次风化原因和机理，该文采用TM（温度和应力）耦合分析方法，对山东诸城恐龙化石风化规律进行深入分析研究。根据化石与围岩间膨胀的不协调性，探索在温度变化情况下化石与围岩间的相互作用规律及对风化造成的影响。结果揭示了温度作用下化石风化的初步原因和规律，可为化石保护提供参考科学依据。

Abstract:

Dinosaur fossils has great scientific value in studying earth evolution, biological evolution, stratigraphic correlation, geological time identify and paleoenvironment reconstruction. But weathering is a serious problem after the dinosaur fossils have been excavated. As many fossils have been destroyed by weathering in a few years or even more quickly. In this article, in order to explore the weathering cause and mechanism of dinosaur fossil geological relics furtherly, TM coupling method is used for analyzing weather regularity of dinosaur fossil in Zhucheng city of Shandong province. The interaction law between fossil and surrounding rock under temperature change has been analyzed in considering their deformation incongruity. Its effect on weathering has also been discussed. Finally, preliminary cause and regularity of weathering has been revealed to provide scientific references for fossil protection.