Holding coral reefs together with soluble cement

用可溶性水泥将珊瑚礁固定在一起

• 批准号: DP170103067
• 负责人: Prof Stephen Eggins
• 金额: $ 27.27万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2017
• 资助国家: 澳大利亚
• 起止时间: 2017-09-30 至 2020-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP170103067
• 关键词: Holding; coral; reefs; together; soluble

This project aims to characterise and understand cement formation in coral reefs. Coral reefs are constructed by cementing together aragonite building blocks made by corals. The main cementing agent is high-magnesium calcite, the most soluble carbonate mineral and susceptible to ocean acidification. High-magnesium calcite cements are best developed on the high energy margins of coral reefs. This project will quantify how crustose coralline algae produces high-magnesium calcite and controls the dissolution and reprecipitation of high-magnesium cements. This project intends to quantify rates of reef cementation, susceptibility to ocean acidification and warming, and possible mitigating effects of alkalinity addition.

该项目旨在表征和理解珊瑚礁中的水泥形成。珊瑚礁是通过将珊瑚制成的库拉尼特建筑块固定在一起来建造的。主要的水泥剂是高镁方解石，是最溶的碳酸盐矿物质，易受海洋酸化的影响。高镁方解石水泥最好在珊瑚礁的高能边缘开发。该项目将量化甲壳珊瑚藻类如何产生高磁力方解石，并控制高镁水泥的溶解和重新沉淀。该项目旨在量化礁石胶结速率，对海洋酸化和变暖的敏感性以及碱度增加的可能作用。