地质科技情报2011，Vol.30Issue(1)：26-30,5.
硫化物和有机碳对碳酸盐热释光测定的影响
Influence of Suifite and Organic Matter on the Thermoluminescence of Carbonate
摘要
Abstract
Natural thermoluminescence (TL) of carbonate has been proposed to be a new proxy for climate and marine environment, but the mechanism remains unclear. In this paper, the thermoluminescence of carbonate was measured in presence of pyrite and coal to investigate the influence of co-exist minerals on the characteristics of TL. Data analysis shows that both pyrite and coal do not change the crystal lattice of carbonate but play a role of TL-killer, with TL decreasing of 4. 043％ and 6. 197％ respectively with one percent increased of pyrite and coal in sample. This implies that dark minerals such as pyrite and coal absorb the light released from the carbonate, weakening the light that reaches the detector of TL apparatus.A pretreatment is required to remove high content of sulfite and organic matter (more than 1 ％) before the TL of carbonate measuring. A negative correlation between TL and Mo in the carbonates from Shangsi section in Guangyuan, Sichuan Province, confirms the TL as a proxy for paleoceanography reconstruction.关键词
碳酸盐/热释光/硫化物/有机碳Key words
carbonate/ thermoluminescence/ sulfite/ organic matter分类
天文与地球科学引用本文复制引用
易振辉,胡超涌..硫化物和有机碳对碳酸盐热释光测定的影响[J].地质科技情报,2011,30(1):26-30,5.基金项目
中国石油化工股份有限公司海相油气勘探前瞻性项目(G0800-06-2S-319) （G0800-06-2S-319）
国家自然科学基金重点项目(40531004) （40531004）
