Research Progress on Interfacial Crystallization of Travertine in Secondary Organic System;

Abstract

The characteristics of biomes and interfacial crystallization by organisms in secondary organic system are summarized in this papar. According to the effects of organisms on carbonate sedimentation，the interfacial crystallization mineralization of travertine by organism in secondary organic system is divided into bio-controlled mineralization and bio-induced mineralization. Five biometabolic activities related to sedimentation of calcium car⁃ bonate are described，and the effects of EPS on the crystal type and morphology of calcium carbonate minerals are discussed. In view of existing problems in the researches on travertine，it is suggested that the role of main compo⁃ nents of organisms，biomolecules and internal tissues of organisms in the formation or degradation of travertine shall be studied in depth，and the interfacial crystallization of travertine in secondary organic system can be further clarified，so as to provide scientific basis for the protection and treatment measures to prevent travertine from de⁃ generation. © 2021 Institute of Karst Geology of Chinese Academy of Geology Sciences. All rights reserved.