| 张晗彬,邓旭升.贵州紫云地区中-下泥盆统风暴沉积的发现及地质意义[J].贵州地质,2018,35(1):32-36 |
| 贵州紫云地区中-下泥盆统风暴沉积的发现及地质意义 |
| Discovery and Its Significance of Storm Deposit of Middle-Lower Devonian in Ziyun Area，Guizhou |
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| DOI： |
| 中文关键词: 贵州紫云地区 早-中泥盆世 风暴岩 风暴序列 |
| 英文关键词:Ziyuan area Guizhou Early-middle Devonian Storm rock Storm sequence |
| 基金项目:中国地质调查局地质调查项目《贵州晴隆地区1∶5万页岩气地质调查》（编号：12120115102001） |
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| 中文摘要: |
| 贵州紫云地区中-下泥盆统火烘组以陆棚碎屑岩沉积为主，火烘组第三段中、下部见多套风暴沉积。风暴沉积特征包括：渠铸型构造（或口袋构造）、波状侵蚀面构造、丘状交错层理、递变层理、平行层理等。根据不同的沉积单元组合，划分出4个风暴沉积序列，限定了泥盆系火烘组为陆相沉积，证实了早-中泥盆世紫云地区仍处于裂隙盆地演化的早期阶段。紫云地区风暴沉积的发现，不仅说明在早-中泥盆世研究区位于赤道附近的低纬度地区，还对古环境、古气候和矿产等具有重要的指示意义。 |
| 英文摘要: |
| In Ziyun area of Anshun，Huogong formation of middle-lower Devonian mainly is shelf clastic deposit，multiple storm deposit are found in middle and lower position of the 3rd section of Huogong formation.The feature of storm deposit include: gutter structure (or pocket structure)，wavy erosion surface structure，hummocky cross stratification，graded bedding，parallel bedding and so on.According to different sedimentary units association，it’s divided into 4 storm deposit sequence，Huogong formation is limited to be continental deposit，it’s proved in early-middle Devonian，Ziyun area still in the early stage of fracture basin evolution.The discovery of storm deposit in Ziyun area not only proved that the target area in early-middle Devonian located in low latitudes area near the equator but also has important guide significance for paleoenvironment，paleoclimate and mineral study. |
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