| 海绿石的成因、指相作用及其年龄意义 |
| |
| 引用本文： | 陈淑慧,李云,胡作维,李小平,马永坤,朱平,陈安清.海绿石的成因、指相作用及其年龄意义[J].岩石矿物学杂志,2014,33(5):971-979. |
| |
| 作者姓名： | 陈淑慧 李云 胡作维 李小平 马永坤 朱平 陈安清 |
| |
| 作者单位： | 中海石油(中国)有限公司 深圳分公司, 广东 广州 510240;成都理工大学 油气藏地质及开发工程国家重点 实验室, 四川 成都 610059;成都理工大学 油气藏地质及开发工程国家重点 实验室, 四川 成都 610059;中海石油(中国)有限公司 深圳分公司, 广东 广州 510240;中海石油(中国)有限公司 深圳分公司, 广东 广州 510240;成都理工大学 油气藏地质及开发工程国家重点 实验室, 四川 成都 610059;成都理工大学 油气藏地质及开发工程国家重点 实验室, 四川 成都 610059 |
| |
| 基金项目： | 国家自然科学基金项目(41302085)；博士点新教师基金(20135122120006) |
| |
| 摘 要： | 海绿石以独特的绿色自生色和球粒形状与围岩形成明显反差，关于其成因、演化、沉积和地层学意义目前存在3种普遍被认可并被采用的观点：海绿石是典型的海相沉积自生矿物，原地海绿石是“慢速、弱还原、较深水环境”的典型指相矿物之一；通常是海侵相的产物，含海绿石的地层在浅海沉积中常被作为海侵时期“凝缩段”及其相关沉积的识别标志之一；是沉积年代学中K-Ar、40Ar/39Ar年龄理想的测定对象。在采用海绿石作为典型指相矿物的过程中，应注意海绿石可以形成于多种沉积环境中，只有原地海绿石才能作为海侵时期“凝缩段”及其相关沉积的识别标志；海绿石年龄往往呈“年轻化”或“老化”，没有火成岩定年准确，只有成熟、富钾的海绿石才是最好的定年对象。
|
| 关 键 词： | 海绿石 指相矿物 凝缩段 沉积年代学 |
| 收稿时间： | 2014/2/28 0:00:00 |
| 修稿时间： | 2014/6/19 0:00:00 |
Genesis, diagnostic role and age significance of glauconites |
| |
| CHEN Shu-hui,LI Yun,HU Zuo-wei,LI Xiao-ping,MA Yong-kun,ZHU Ping and CHEN An-qing.Genesis, diagnostic role and age significance of glauconites[J].Acta Petrologica Et Mineralogica,2014,33(5):971-979. |
| |
| Authors: | CHEN Shu-hui LI Yun HU Zuo-wei LI Xiao-ping MA Yong-kun ZHU Ping and CHEN An-qing |
| |
| Institution: | Shenzhen Branch of China National Offshore Oil Corporation, Guangzhou 510240, China;State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China;State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China;Shenzhen Branch of China National Offshore Oil Corporation, Guangzhou 510240, China;Shenzhen Branch of China National Offshore Oil Corporation, Guangzhou 510240, China;State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China;State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China |
| |
| Abstract: | With its unique green color and pellet-like shape, glauconite contrasts remarkably with the surrounding rocks. Currently there are three generally adopted concepts: glauconite is a kind of typical marine sedimentary mineral, special in-situ glauconite is one of the diagnostic minerals indicative of slow depositional rate, weak reduction and deep-water environment, glauconites are often deposited during the transgressive period, and therefore the glauconite-bearing formations in shallow sediments are often regarded as condensed section in the transgressive period. Glauconites are ideal measurement objects of K-Ar and 40Ar/39Ar ages. Their genesis, evolution, and sedimentary as well as stratigraphic significance have been widely used. It should be noted that glauconites can be formed in a variety of sedimentary environments, only in-situ glauconites can be used to identify the condensed section, but its age may be younger or older than the real age. |
| |
| Keywords: | glauconite diagnostic mineral condensed section depositional chronology |
|
| 点击此处可从《岩石矿物学杂志》浏览原始摘要信息 |
| 点击此处可从《岩石矿物学杂志》下载免费的PDF全文 |
|
