...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Oceanology >Paleoclimatic and paleolatitude settings of accumulation of radiolarian siliceous-volcanogenic sequences in the middle Mesozoic Pacific: Evidence from allochthons of East Asia
【24h】

Paleoclimatic and paleolatitude settings of accumulation of radiolarian siliceous-volcanogenic sequences in the middle Mesozoic Pacific: Evidence from allochthons of East Asia

机译：中生代太平洋地区放射性硅藻 - 波动序列积累的古脑电图和古凝固环境：来自东亚的异种学报的证据

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

Jurassic-Cretaceous siliceous-volcanogenic rocks from nappes of tectonostratigraphic sequences of the East Asia Middle Cretaceous Okhotsk-Koryak orogenic belt are represented by a wide range of geodynamic sedimentation settings: oceanic (near-spreading zones, seamounts, and deep-water basins), marginal seas, and island arcs. The taxonomic compositions of radiolarian communities are used as paleolatitude indicators in the Northern Pacific. In addition, a tendency toward climate change in the Mesozoic is revealed based on these communities: from the warm Triassic to the cold Jurassic with intense warming from the Late Jurassic to the Early Cretaceous. Cretaceous warming led to heating of ocean waters even at moderately high latitudes and to the development of Tethyan radiolarians there. These data are confirmed by a global Cretaceous temperature peak coinciding with a high-activity pulse of the planetary mantle superplume system, which created thermal anomalies and the greenhouse effect. In addition, the Pacific superplume attributed to this system caused accelerated movement of oceanic plates, which resulted in a compression setting on the periphery of the Pacific and the formation of the Okhotsk-Koryak orogenic belt on its northwestern framing in the Middle Cretaceous, where Mesozoic rocks of different geodynamic and latitudinal-climate settings were juxtaposed into allochthonous units.
机译：来自东亚的构造数据库序列Nappes的侏罗纪 - 白垩纪 - 波动岩石中白垩纪Okhotsk-Koryak Orenogenic皮带是由各种地磁沉降环境所代表的：海洋（近蔓延区，海山和深水盆地），边缘海和岛弧。放射性族社区的分类法组成被用作北太平洋古古菌指标。此外，基于这些社区揭示了中生代气候变化的气候变化的趋势：从温暖的三叠系到寒冷的侏罗纪，激烈地升温到早期的白垩纪。白垩纪的变暖导致海水的加热即使在中等高纬度和在那里的Tethyan Radiolarians的发展也是如此。这些数据通过全球白垩纪温度峰确认，与行星式披风过度美容系统的高活动脉冲重合，该脉冲脉冲系统产生热异常和温室效果。此外，归因于该系统的太平洋超级美容引起了海洋板的加速运动，导致太平洋周边的压缩设置，并在其西北部框架上形成了Okhotsk-Koryak Orenogenic带，其中中生型不同地球动力学和纬度气候环境的岩石被并置成表发单位。

著录项

相似文献

  • 外文文献
  • 中文文献
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