A deep section of accretionary complex: Susunai Complex in Sakhalin Island, Northwest Pacific Margin
A deep section of accretionary complex: Susunai Complex in Sakhalin Island, Northwest Pacific Margin
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增生杂岩的深层：西北太平洋边缘萨哈林岛的Susunai杂岩
DOI：
10.1111/j.1440-1738.1992.tb00067.x
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发表时间：
1992
期刊：
影响因子：
1.5
通讯作者：
V. Lushchenko
中科院分区：
文献类型：
--
作者：
G. Kimura;M. Sakakibara;H. Ofuka;H. Ishizuka;S. Miyashita;M. Okamura;O. Melinikov;V. Lushchenko
在萨哈林岛观察到增生复合体的深层剖面，变质的苏苏奈复合体。、俄罗斯。泵柱岩-放光石相变质火山、变质岩和变质岩的高压部分暴露良好，构成了一个保存着与洋壳底部有关的原始构造的构造堆。D1 ~ D3 3个阶段的变形表明该杂岩在俯冲、下覆和掘出过程中的连续变形。该杂岩中的海洋物质比其他有文献记载的古代增生杂岩（如日本西南部的岛曼托带和阿拉斯加的鬼岩组）更为丰富，后者是浅下覆的。在苏苏奈，滑脱的深度下陷刮掉了海洋地壳的上部，主要是枕状玄武岩层。这种下降是由于变质作用期间从断裂的海洋地壳中释放出的超压水造成的地壳弱化。
A deep section of accretionary complex, the metamorphosed Susunai Complex, is observed on Sakhalin Is., Russia. High pressure part of pumpellyite-actinolite facies metavolcanics, metacherts and metapelites are well exposed and constitute a tectonic pile preserving primary structures related to underplating of the oceanic crust. Three stages of deformation, D1 through D3, suggest successive deformation during subduction, underplating and exhumation of the complex. Oceanic material in the complex is more abundant than other well documented ancient accretionary complexes (e.g. the Shimanto Belt in southwest Japan and the Ghost Rocks Formation in Alaska), which were shallowly underplated. At Susunai, deep down-stepping of a decollement has scraped off the upper part of the oceanic crust, primarily the pillowed basalt horizon. This down-stepping results from crustal weakening as overpressured water is released from the fractured oceanic crust during metamorphism.
影响因子：
4.2
作者：
MATSUDA, T;ISOZAKI, Y
通讯作者：
ISOZAKI, Y