| 摘要: |
| 汪家店地区上泥盆统王冠沟组(Dsw)发育了两种生物灰岩类型;生物障积灰岩和生物粘结灰岩。根据生物生态特征、造礁方式和岩石产出形态,可以划分为层状礁和生物丘,它们形成在不同的水动力条件下,具有不同的沉积环境。总体上都形成于水体较浑浊、较深的潮下低能环境中。 |
| 关键词: 生物灰岩 层状礁 生物丘 沉积特征 王冠沟组 商南汪家店地区 |
| DOI： |
| 附件 |
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| 基金项目: |
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| SEDIMENTARY CHARACTERISTICS OF BIOGENIC LIMESTONES IN THE UPPER DEVONIAN WANGGUANGOU FORMATION IN THE WANGJIADIAN REGION,SHANGNAN,SHAANXI |
| Liu Yijun, Ye Jian |
(1 China University of Geoscience, Beijing;
2 Xi'an College of Geology) |
| Abstract: |
| Two types of biogenetic limestones are well developed in the Upper Devonian Wang-guangou Formation in the Wangjiandian region,Shangnan,Shaanxi.They are bafflestone and bindstone,which may be subdivided,according to ecological characteristics,reef-build-ing modes and occurrences,in to bedded reefs and bioherms produced in distinctive environ-ments under different hydrodynamic conditions.Commonly,they were all formed in more turbid-and deeper-water subtidal low-energy environments. |
| Key words: biogenic limestone bedded reef bioherm sedimentary characteristic Wangguangou Formation Wangjiadian region in Shangnan |
