Geology and Geomorphology of the Sakhalin Island. Early Miocene Unconformity in the Makarov and Chekhov Areas, Southern Sakhalin Island, Russia, and its Implication.
Geology and Geomorphology of the Sakhalin Island. Early Miocene Unconformity in the Makarov and Chekhov Areas, Southern Sakhalin Island, Russia, and its Implication.
复制标题
萨哈林岛的地质和地貌。
DOI：
10.5026/jgeography.109.2_262
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发表时间：
2000
影响因子：
3.1
通讯作者：
K. Ogasawara
中科院分区：
文献类型：
--
作者：
K. Kano;K. Uto;S. Uchiumi;K. Ogasawara
本文综述了俄罗斯萨哈林岛南部马卡洛夫和契诃夫地区的第三纪年代地层和古环境，重点介绍了沉降和隆升历史。在白垩纪晚期到古新世的前沉积物和沟渠填埋作用之后，萨哈林岛西海岸契诃夫地区的始新世中期和萨哈林岛东海岸马卡洛夫地区的渐新世晚期开始沉降。这种沉降可能在渐新世晚期达到顶峰，随后随着拉斑玄武岩或钙碱性玄武岩到安山岩的不断喷发而上升到地表。早中新世晚期，这两个地区再次以非常快的速度开始沉降，随后在邻近的千岛（千岛）和日本海盆地于15 Ma左右停止开放后缓慢沉降或隆起。第一次沉降可能意味着库页岛弧后或弧内区域的裂谷，第二次沉降意味着千岛海盆和日本海盆地的开放。早中新世不整合面将第三纪沉降和隆起的两个旋回分开，也发生在日本东北部北海道和东北省的日本海沿岸地区，并且被认为记录了伴随着流流圈地幔的上涌或与弧后盆地打开相关的其他未知过程的构造隆起。
This paper reviews the Tertiary chronostratigraphy and paleoenvironments in the Makarov and Chekhov areas, southern Sakhalin Island, Russia, emphasizinsubsidence and uplifting history. After the late Cretaceous to Paleocene accretion of fore-arsediments and trench-fills, subsidence started in the middle Eocene in the Chekhov area, on the west coast of Sakhalin, and in the late Oligocene in the Makarov area, on the east coast of Sakhalin. This subsidence culminated perhaps during the late Oligocene, followed by uplifting to the surface with increasing eruptions of tholeiitic or calcalkaline basalt to andesite. Subsidence in the two areas started again in the late early Miocene at a very rapid rate, followed by slow subsidence or uplifting after the adjacent Chishima (Kuril) and the Japan Sea Basins ceased opening at about 15 Ma. The first subsidence perhaps implies the rifting of the back-arc or intra-arc area of Sakhalin Island, and the second subsidence implies the opening the Chishima and Japan Sea Basins. The early Miocene unconformity, which separates two cycles of Tertiary subsidence and uplifting, also occurs along the Japan Sea side areas of Hokkaido and Tohoku Provinces, northeast Japan, and is thought to record a tectonic uplifting with the upwelling of the athenospheric mantle, or by other unknown processes related to the opening of the back-arc basins.
影响因子：
4.2
作者：
G. Kimura;K. Tamaki
通讯作者：
G. Kimura;K. Tamaki