An unconformity in the early Miocene syn‐rifting succession, northern Noto Peninsula, Japan: Evidence for short‐term uplifting precedent to the rapid opening of the Japan Sea

An unconformity in the early Miocene syn‐rifting succession, northern Noto Peninsula, Japan: Evidence for short‐term uplifting precedent to the rapid opening of the Japan Sea
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日本能登半岛北部早中新世同裂谷层序中的不整合面:日本海快速张开的短期抬升先例的证据

DOI:
10.1046/j.1440-1738.2002.00363.x
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发表时间:
2002
期刊:
影响因子:
1.5
通讯作者:
T. Danhara
T. Danhara
中科院分区:
地球科学4区
文献类型:
--
作者:
K. Kano;T. Yoshikawa;Y. Yanagisawa;K. Ogasawara;T. Danhara

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摘要  本文描述了日本中部日本海一侧能登半岛北部新发现的早中新世不整合面。该不整合面标志着早中新世非海相到海相序列与更广泛​​的早中新世早期到中新世早期海相序列之间的边界,并且包含从18Ma或更早到17Ma的100万年或更短的时间间隔。中新世早期的演替可能代表了海侵和最初的缓慢裂谷的早期阶段。上覆的早中新世早期至中新世早期序列记录了日本海在约 16Ma 时的开口高潮,同时日本弧广泛而快速的沉降。两个海侵层系之间的不整合面可能代表全球海平面下降,或更可能代表地壳抬升,因为两个海侵层系之间不存在向上变浅或海退相。被认为与能登半岛北部的这种不整合面相关的早中新世不整合面出现在萨哈林岛和日本的日本海沿岸地区。它们很可能是在软流圈地幔上涌的裂谷过程中产生的,尽管需要更准确的年龄限制来评估这一想法。
Abstract  The present paper describes the newly discovered early Miocene unconformity in the northern Noto Peninsula, on the Japan Sea side, central Japan. The unconformity marks the boundary between an early Miocene non‐marine to marine succession and a more extensive, late early to early middle Miocene marine succession, and contains a time gap of an order of 1 million years or less from 18 Ma or earlier to 17 Ma. The early Miocene succession likely represents an early phase of marine transgression and initial slow rifting. The overlying early to early middle Miocene succession records the climax of the opening of the Japan Sea at ca 16 Ma with widespread, rapid subsidence of the Japan Arc. The unconformity between the two transgressive successions may represent a global sealevel fall or, more likely, crustal uplifting because no upward‐shallowing or regressive facies remains between the two successions. Early Miocene unconformities that are thought to be correlative with this unconformity in the northern Noto Peninsula occur in places along the Japan Sea coast of Sakhalin and Japan. They are likely to have been produced during rifting in response to upwelling of asthenospheric mantle, although more accurate age constraints are necessary to evaluate this idea.
阿尼合型和大岛型植物群:它们的年龄和构造意义
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者:
Kano;K.;Ohguchi;T. and Uemura;K.
通讯作者: K.