新西兰Taranaki盆地中新世Kora火山高精度地层格架  

High-Resolution Stratigraphic Framework of Miocene Kora Volcano in Taranaki Basin,New Zealand

作　　者：唐华风[1,2,3] 陶鹏 Alan Patrick Bischoff 王寒非 Marcos Rossetti Andrew Nicol Ben Kennedy 郭天婵 Tang Huafeng;Tao Peng;Alan Patrick Bischoff;Wang Hanfei;Marcos Rossetti;Andrew Nicol;Ben Kennedy;Guo Tianchan(Key Laboratory of Mineral Resources Evaluation in Northeast Asia of Ministry of Natural Resources,J ilin University,Changchun 130061,China;College of Earth Sciences,Jilin University,Changchun 130061,China;School of Earth and Environment,University of Canterbury,Christchurch 8140,New Zealand)

机构地区：[1]吉林大学自然资源部东北亚矿产资源评价重点实验室,吉林长春130061 [2]吉林大学地球科学学院,吉林长春130061 [3]坎特伯雷大学地球与环境学院,基督城8140

出　　处：《地球科学》2022年第7期2631-2645,共15页Earth Science

基　　金：国家自然科学基金重大项目(No.41790453);国家重点研发计划项目(No.2019YFC0605402);国家科学技术部重大专项(No.2016ZX05026-004-001)。

摘　　要：建立埋藏火山的高精度地层格架对了解火山系统的演化、储层成因和资源潜力等具有重要意义.以新西兰Taranaki盆地中新世Kora火山为例,利用小波变换和井震联合对比等方法,开展火山地层高精度格架分析.在Kora火山识别出20个堆积单元,主要为火山碎屑堆积单元以及再搬运碎屑堆积单元,可合并为5个部分(相当于5个火山机构);整体上火山地层的建造与喷发中心的形成和迁移有关.利用井和常规三维地震数据可以较为准确地识别出喷发间断不整合界面系统、可建立堆积单元尺度的高精度地层格架,利用常规三维地震数据只能识别出部分喷发间断不整合界面、只能建立火山机构尺度的地层格架.相对年代的高精度地层格架是埋藏火山的更好选择.Establishment of high-resolution volcano-stratigraphic frameworks(HRVF) of buried volcanoes is important for understanding the evolution of the volcanic system and its potential to form volcanic reservoirs.Taking Miocene Kora volcano in Taranaki Basin,New Zealand as an example,in this paper it uses wavelet transform and well-seismic correlation to analyze the HRVF.It mapped 20 units that include predominately deposits from pyroclastic eruptions,together with reworked debris deposits.The Kora Volcano can be divided into five parts according to major unconformities that are related with active and quiescent eruptive periods and with the formation and migration of distinctive eruptive centers.The outline framework can be built by using the conventional 3D seismic data,and the HRVF can be built by using the wells and conventional 3D seismic data.The better choice for building the HRVF of the buried volcano is in relative age.

关 键 词：火山地层格架 火山岩 地层界面 地层单元 火山机构 石油地质学 

分 类 号：P618.13[天文地球—矿床学]