岩石古放射性生热率的校正及其地球化学意义-矿物岩石地球化学通报.PDF

Bul let in of Min eralogy , Pet rology and Geoch emistry Vol29 No2, Apr 2010 章邦桐, 凌洪飞, 陈培荣, 吴俊奇 , 210093 : 岩石放射性生热率是研究油气沉积盆地地热及花 岩体热演化史的一个重要参数, 但由现今采样分析所测得的放射 性元素含量计算得出的是当今的放射性生热率因此, 本文根据辐射衰变定律及U T h 和K 的放射性生热参数, 导出三种不 同计量单位W m- 3 ,J g- 1 a- 1 , HG U ) 校正岩石古放射性生热率的公式它们可应用于沉积盆地中古地层放射性生热率的 计算和校正, 也适用于铀矿床成矿古水热系统热源及花 岩体热演化史的研究 : 岩石古放射性生热率; 校正; 成矿古水热系统; 沉积盆地; 地热; 花 岩体热演化史 : P 598 : A : 2010) 020018104 Correction to the Paleoradiogenic Heat Production Rate of Rocks and Its Geochemical Significance ZH A N G Bangto ng , L IN G H ongfei , CH EN Peir ong , WU Junqi S tate K ey L abor atory f or M ineral D ep osits Resear ch, School of Earth Sciences , N anj ing University , N anj ing 2 10093, China Abstract:T he radiogen ic heat production rate of rock s is an important paramet er for geoth ermal study on th e oil an d gas b asin and t he granit e pluton. But th e calcu lation result of radioactive element s represent s th e current radiogenic heat product ion rat e of rock s. In t his p aper equation s for calculat ing th e paleoradiogenic heat produ ction rate in 3 dif ferent dimensions W m- 3 , Jg- 1 a- 1 , HGU ) w ere derived from t he law of rad iat ion decay and th e radiogenic heat produ ction rate of radioactive elements U , T h, 40 K) . T hese equations may be applied not on ly t o calculat e an d correct th e paleoradiogen ic heat product ion rat e of sedimentary strata in th e b asin, but also t o st udy on identifyin g th e heat source of metallogen ic paleohydrother