奥陶系宝塔灰岩网纹构造成因研究进展及新发现
- 廖纪佳1,2,
- 马思豪1,2,
- 廖明光1,2, ,
- 肖雪薇1,2,
- 林丹3,4,
- 贺文亮5,
- 廖继昊5
- 1. 四川省天然气地质重点实验室, 西南石油大学, 成都 610500;
- 2. 西南石油大学地球科学与技术学院, 成都 610500;
- 3. 页岩气评价与开采四川省重点实验室, 成都 610091;
- 4. 四川省煤田地质局, 成都 610072;
- 5. 川庆钻探物探公司一分公司, 四川南充 637000
基金项目:
油气藏地质及开发工程国家重点实验室开放课题（PLN1523）；四川省教育厅重点项目（16ZA0078）；西南石油大学青-教师“过学术关”项目（201231010014）
作者简介:
廖纪佳,男,1983年出生,博士,讲师,沉积学和储层地质学,E-mail:liaojijia198433@163.com
- 收稿日期:
2016-12-08
- 修回日期:
2017-01-27
- 刊出日期:
2017-04-10
摘要: 综述了扬子地区分布广泛的奥陶系宝塔灰岩网纹构造成因的研究进展，整合了多位学者的主要观点及认识，结合四川旺苍唐家河等地奥陶系剖面的考察与镜下薄片观察，对网纹构造及其成因进行了深入研究并提出未来研究方向的思考与建议。学界目前普遍认为这种网纹构造并非暴露干裂成因，生物遗迹、海底硬地、准同生变形构造等成因解释也缺乏足够的证据支持，但关于水下胶缩、成岩作用以及构造作用等解释仍在热烈讨论中；对四川广元旺苍唐家河剖面宝塔灰岩的野外考察过程中发现了一些新的现象，比如在灰色宝塔灰岩中观察到了非沥青充填的“黑色细纹”，网纹构造的形态、泥质含量等也随沉积旋回而呈现出规律性变化。进一步研究这些新的现象或许能为后期确定网纹构造的成因提供新的证据。
Research of the Origin of Network Structure in the Ordovician Pagoda Limestone: Advances and New Discovery
- LIAO JiJia
1,2,
- MA SiHao
1,2,
- LIAO MingGuang
1,2, ,
- XIAO XueWei
1,2,
- LIN Dan
3,4,
- HE WenLiang
5,
- LIAO JiHao
5
- 1. Natural Gas Geology Key Laboratory of Sichuan Province, Southwest Petroleum University, Chengdu 610500, China;
- 2. School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China;
- 3. Sichuan Key Laboratory of Shale Gas Evaluation and Exploitation, Chengdu 610091, China;
- 4. Sichuan Coalfield Geology Bureau, Chengdu 610072, China;
- 5. CNPC Chuanqing Drilling Engineering Company, Nanchong 637000, China
Funds:
Open Fund of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, No. PLN1523; Major Project of Education Department in Sichuan Province, No. 16ZA0078; Young scholars development fund of Southwest Petroleum University No. 201231010014
- Received Date:
2016-12-08
- Rev Recd Date:
2017-01-27
- Publish Date:
2017-04-10
Abstract: Pagoda limestone, which is widely distributed in Yangtze area, refers to a set of micritic limestone or bioclastic micritic limestone in Ordovician Pagoda Formation. The unique network structure is developed pervasively throughout the entire Pagoda Formation in bedding-plan view, and these networks are similar to turtle shell or horseshoe, so it is also known as "turtle-shell cracks" or "horseshoe cracks". In this study, combining with the field survey in Tangjiahe section of Wangcang in Sichuan province, we systematically reviewed the literature on the issue of the unique network structure, and summarized the main views about the explanations. Up to now, agreements have been achieved that the cracks should not be considered as an evidence of desiccation during surface exposure; biogliph, hardground and other origins are lack of evidence; while syneresis, diagenesis and other causes are still in heated discussion. In addition, some new phenomena were observed on Tangjiahe section, for example, we found the black fine lines on the bedding surface of gray Pagoda limestone. Both the existing problems and the new findings may boost the study on the origin of the special network structure in Pagoda Formation. They can also help improve our understanding of the mechanisms of the special networks.
廖纪佳, 马思豪, 廖明光, 肖雪薇, 林丹, 贺文亮, 廖继昊. 奥陶系宝塔灰岩网纹构造成因研究进展及新发现[J]. 沉积学报, 2017, 35(2): 241-252. doi: 10.14027/j.cnki.cjxb.2017.02.004
LIAO JiJia, MA SiHao, LIAO MingGuang, XIAO XueWei, LIN Dan, HE WenLiang, LIAO JiHao. Research of the Origin of Network Structure in the Ordovician Pagoda Limestone: Advances and New Discovery[J]. Acta Sedimentologica Sinica, 2017, 35(2): 241-252. doi: 10.14027/j.cnki.cjxb.2017.02.004
| Citation: |
LIAO JiJia, MA SiHao, LIAO MingGuang, XIAO XueWei, LIN Dan, HE WenLiang, LIAO JiHao. Research of the Origin of Network Structure in the Ordovician Pagoda Limestone: Advances and New Discovery[J]. Acta Sedimentologica Sinica, 2017, 35(2): 241-252. doi: 10.14027/j.cnki.cjxb.2017.02.004
|
点击查看大图
下载:
