麦哲伦海山盖奥特(太平洋)演化过程中的火山复合体和构造岩理阶段。信息 2:构造运动阶段

Pub Date : 2024-08-25 DOI:10.1134/s1819714024700246
V. T. S’edin, S. P. Pletnev, T. E. Sedysheva
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引用次数: 0

摘要

摘要麦哲伦海山地块的演化分为五个构造地质学阶段:1、晚侏罗世-早白垩世(最早的白垩纪,∼160-140 (?)Ma);2、早白垩世(晚巴里米安世(?3、白垩纪晚期(震旦纪晚期(?)-都龙纪-坎盘纪早期,∼95-76 Ma);4、白垩纪晚期(坎盘纪晚期-马斯特里赫斯纪,∼74.5-66.0 Ma);5、新生代,66-0 Ma。每个构造运动阶段都与麦哲伦海隆火山岩的特定年龄复合体相对应。构造成因阶段的持续时间不同,在麦哲伦海山盖奥茨现代结构的演化和形成过程中发挥的作用也不同。每个构造地貌阶段都代表了盖奥特的一个特定地貌空间(基底、结构的主要部分、小型复杂叠加二阶结构)。总体而言,麦哲伦海隆的构造地质学演化阶段与太平洋其他一些地区的演化阶段非常吻合,并与其构造地质学激活的早期既定时期相对应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Volcanic Complexes and Tectonomagmatic Stages in the Evolution of Magellan Seamount Guyots (Pacific Ocean). Message 2: Tectonomagmatic Stages

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Volcanic Complexes and Tectonomagmatic Stages in the Evolution of Magellan Seamount Guyots (Pacific Ocean). Message 2: Tectonomagmatic Stages

Abstract

There are five tectonomagmatic stages in the evolution of Magellan Seamount guyots: 1, Late Jurassic–Early Cretaceous (Earliest Cretaceous, ∼160–140 (?) Ma); 2, Early Cretaceous (Late Barremian (?)–Aptian–Albian, ∼127–96 Ma); 3, Late Cretaceous (Late Cenomanian (?)–Turonian–Early Campanian, ∼95–76 Ma); 4, Late Cretaceous (Late Campanian–Maastrichian, ∼74.5–66.0 Ma); 5, Cenozoic, 66–0 Ma. Each of the tectonomagmatic stages corresponds to a specific age complex of volcanic rocks of the Magellan Seamounts. Tectonomagmatic stages have different durations and played different roles in the evolution and formation of the modern structure of Magellan Seamount guyots. Each of the tectonomagmatic stages characterizes a specific geomorphological space of guyots (base, main part of the structure, small complicating overprinted second-order structures). In general, the tectonomagmatic stages in the evolution of the Magellan Seamounts agree well with the stages of the evolution of some other regions of the Pacific Ocean and correspond to the earlier established periods of their tectonomagmatic activation.

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