Geochemical characteristics and origin of silicolites in the Early Cretaceous Basin in Xinchang, Zhejiang Province(浙江新昌早白垩世盆地中硅质岩石的地球化学特征与成因)
在浙江新昌早白垩世盆地西侧的馆头组中,存在一些硅质岩石块状硅质岩、含叠层石硅质岩和木化石硅质岩等.它们以高SiO2、富Fe2O3、低Al2O3和TiO2为特征,REE含量低,而且有弱的Ce亏损,δ30Si值为-0.4‰~-1.5‰,δ18O值为18.1‰~23.1‰.硅质岩的地球化学研究表明它们具有热水硅质岩的特点.结合其它地质资料,作者讨论了这些硅质岩的硅质来源和成因,认为它们系地表水和海水向下渗透,并在一定深度内发生循环然后上涌,火山活动为热水提供热源,SiO2来源于热水流经的地层和岩石.富含SiO2的热水溶液在适当的地方沉淀形成块状或透镜状硅质岩,也可解释古树木和含叠层石灰岩形成木化石硅...
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| Format: | Article |
| Language: | zho |
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Zhejiang University Press
2003-03-01
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| Series: | Zhejiang Daxue xuebao. Lixue ban |
| Subjects: | |
| Online Access: | https://doi.org/zjup/1008-9497.2003.30.2.230-235 |
| _version_ | 1797236482504654848 |
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| author | DONGChuan-wan(董传万) ZHUGuo-qiang(竺国强) YINWei(银薇) |
| author_facet | DONGChuan-wan(董传万) ZHUGuo-qiang(竺国强) YINWei(银薇) |
| author_sort | DONGChuan-wan(董传万) |
| collection | DOAJ |
| description | 在浙江新昌早白垩世盆地西侧的馆头组中,存在一些硅质岩石块状硅质岩、含叠层石硅质岩和木化石硅质岩等.它们以高SiO2、富Fe2O3、低Al2O3和TiO2为特征,REE含量低,而且有弱的Ce亏损,δ30Si值为-0.4‰~-1.5‰,δ18O值为18.1‰~23.1‰.硅质岩的地球化学研究表明它们具有热水硅质岩的特点.结合其它地质资料,作者讨论了这些硅质岩的硅质来源和成因,认为它们系地表水和海水向下渗透,并在一定深度内发生循环然后上涌,火山活动为热水提供热源,SiO2来源于热水流经的地层和岩石.富含SiO2的热水溶液在适当的地方沉淀形成块状或透镜状硅质岩,也可解释古树木和含叠层石灰岩形成木化石硅质岩和含叠层石硅质岩.根据氧同位素地质温度计计算出硅质岩形成时的热水温度为70.8~108.4℃. |
| first_indexed | 2024-04-24T17:04:33Z |
| format | Article |
| id | doaj.art-6e20bf711e474558b36fcd075fb346e3 |
| institution | Directory Open Access Journal |
| issn | 1008-9497 |
| language | zho |
| last_indexed | 2024-04-24T17:04:33Z |
| publishDate | 2003-03-01 |
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| spelling | doaj.art-6e20bf711e474558b36fcd075fb346e32024-03-29T01:58:19ZzhoZhejiang University PressZhejiang Daxue xuebao. Lixue ban1008-94972003-03-01302230235zjup/1008-9497.2003.30.2.230-235Geochemical characteristics and origin of silicolites in the Early Cretaceous Basin in Xinchang, Zhejiang Province(浙江新昌早白垩世盆地中硅质岩石的地球化学特征与成因)DONGChuan-wan(董传万)0ZHUGuo-qiang(竺国强)1YINWei(银薇)2Department of Earth Sciences, Zhejiang University, Hangzhou 310027, China(浙江大学地球科学系，浙江 杭州 310027)Department of Earth Sciences, Zhejiang University, Hangzhou 310027, China(浙江大学地球科学系，浙江 杭州 310027)Department of Earth Sciences, Zhejiang University, Hangzhou 310027, China(浙江大学地球科学系，浙江 杭州 310027)在浙江新昌早白垩世盆地西侧的馆头组中,存在一些硅质岩石块状硅质岩、含叠层石硅质岩和木化石硅质岩等.它们以高SiO2、富Fe2O3、低Al2O3和TiO2为特征,REE含量低,而且有弱的Ce亏损,δ30Si值为-0.4‰~-1.5‰,δ18O值为18.1‰~23.1‰.硅质岩的地球化学研究表明它们具有热水硅质岩的特点.结合其它地质资料,作者讨论了这些硅质岩的硅质来源和成因,认为它们系地表水和海水向下渗透,并在一定深度内发生循环然后上涌,火山活动为热水提供热源,SiO2来源于热水流经的地层和岩石.富含SiO2的热水溶液在适当的地方沉淀形成块状或透镜状硅质岩,也可解释古树木和含叠层石灰岩形成木化石硅质岩和含叠层石硅质岩.根据氧同位素地质温度计计算出硅质岩形成时的热水温度为70.8~108.4℃.https://doi.org/zjup/1008-9497.2003.30.2.230-235硅质岩地球化学早白垩世新昌盆地 |
| spellingShingle | DONGChuan-wan(董传万) ZHUGuo-qiang(竺国强) YINWei(银薇) Geochemical characteristics and origin of silicolites in the Early Cretaceous Basin in Xinchang, Zhejiang Province(浙江新昌早白垩世盆地中硅质岩石的地球化学特征与成因) Zhejiang Daxue xuebao. Lixue ban 硅质岩 地球化学 早白垩世 新昌盆地 |
| title | Geochemical characteristics and origin of silicolites in the Early Cretaceous Basin in Xinchang, Zhejiang Province(浙江新昌早白垩世盆地中硅质岩石的地球化学特征与成因) |
| title_full | Geochemical characteristics and origin of silicolites in the Early Cretaceous Basin in Xinchang, Zhejiang Province(浙江新昌早白垩世盆地中硅质岩石的地球化学特征与成因) |
| title_fullStr | Geochemical characteristics and origin of silicolites in the Early Cretaceous Basin in Xinchang, Zhejiang Province(浙江新昌早白垩世盆地中硅质岩石的地球化学特征与成因) |
| title_full_unstemmed | Geochemical characteristics and origin of silicolites in the Early Cretaceous Basin in Xinchang, Zhejiang Province(浙江新昌早白垩世盆地中硅质岩石的地球化学特征与成因) |
| title_short | Geochemical characteristics and origin of silicolites in the Early Cretaceous Basin in Xinchang, Zhejiang Province(浙江新昌早白垩世盆地中硅质岩石的地球化学特征与成因) |
| title_sort | geochemical characteristics and origin of silicolites in the early cretaceous basin in xinchang zhejiang province 浙江新昌早白垩世盆地中硅质岩石的地球化学特征与成因 |
| topic | 硅质岩 地球化学 早白垩世 新昌盆地 |
| url | https://doi.org/zjup/1008-9497.2003.30.2.230-235 |
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