• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>2002 New Zealand Petroleum Conference Proceedings, Feb 24-27, 2002, Auckland New Zealand >New Zealand basin development and depositional systems evolution: quantification and visualisation
【24h】

New Zealand basin development and depositional systems evolution: quantification and visualisation

机译：新西兰流域开发和沉积系统演化：量化和可视化

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Systematic mapping of Cretaceous and Cenozoic sediment thickness data outline areas of sediment accumulation and record the development and depositional systems of New Zealand's sedimentary basins. Three data sources have been used; 1) regional seismic interpretations in prospective basins close to New Zealand, 2) gravity models in areas with poor seismic coverage, and 3) the National Geophysical Data Centre (NGDC) global sediment thickness database in distal areas. Analysis of these data indicates that in the New Zealand region (from 160°E to 170°W and between 30°S and 57°S) there is more than 6 million km~3 of Cretaceous and Cenozoic strata, with between 10% and 20% of this volume comprising carbonate deposits. About half of the total volume occurs in the northwest quadrant of the region - the Taranaki, Northland, Reinga, Deepwater Taranaki and New Caledonia basins. There is about 400,000 km~3 of sediment in the Taranaki Basin and a similar volume in the Great South Basin. Each of the Northland, East Coast and Canterbury basins contain approximately 200,000 km~3 of sediments. All the prospective basins close to New Zealand are characterised by rapid subsidence in the Cretaceous and early Cenozoic. The sediments that filled the basins at this time are major source rocks. Through the mid-Cenozoic, the proportion of carbonate steadily increased and these fine-grained sediments developed as seals over many of New Zealand's largest petroleum accumulations. In the late Cenozoic, development of the Australia/Pacific plate boundary through New Zealand resulted in widespread deformation and subsidence in many basins. This tectonism resulted in the deposition of reservoir formations, the creation of structural traps and rapid burial that enhanced hydrocarbon generation and expulsion in basins close to the active plate boundary. By contrast, little deformation and burial occurred during the late Cenozoic in basins distal from the plate boundary, where hydrocarbon expulsion and entrapment occurred within Cretaceous strata during Late Cretaceous and early Cenozoic time.
机译：白垩纪和新生代沉积物厚度数据的系统制图概述了沉积物堆积的区域，并记录了新西兰沉积盆地的发育和沉积系统。使用了三个数据源。 1）接近新西兰的潜在盆地的区域地震解释； 2）地震覆盖范围较差的地区的重力模型； 3）远端地区的国家地球物理数据中心（NGDC）全球沉积物厚度数据库。对这些数据的分析表明，在新西兰地区（从160°E到170°W以及在30°S到57°S之间），白垩纪和新生代地层超过600万平方公里〜3，其中10％该体积的20％包含碳酸盐沉积物。总产量的大约一半发生在该地区的西北象限-塔拉纳基盆地，北地，雷因加，塔瓦纳基深水盆地和新喀里多尼亚盆地。塔拉纳基盆地约有40万km〜3的沉积物，大南部盆地约有类似的沉积量。北陆盆地，东海岸盆地和坎特伯雷盆地每个都包含大约200,000 km〜3的沉积物。靠近新西兰的所有潜在盆地都以白垩纪和新生代早期的快速沉降为特征。此时充满盆地的沉积物是主要的烃源岩。整个中新生代，碳酸盐的比例稳步增加，这些细颗粒状的沉积物在新西兰许多最大的石油聚集体中形成了海豹。在新生代晚期，通过新西兰发展的澳大利亚/太平洋板块边界导致了许多盆地的广泛变形和沉陷。这种构造导致了储集层的沉积，构造圈闭的形成和快速埋葬，从而增强了在活动板块边界附近盆地中油气的产生和排出。相比之下，在晚于新生代的板块边界盆地中几乎没有变形和埋葬，在晚白垩世和新生代时期，白垩纪地层内的烃排泄和夹带发生。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号