Resedimentation of non-welded facies in the Miocene Muro Ignimbrite, Nara, southwestern Japan
Resedimentation of non-welded facies in the Miocene Muro Ignimbrite, Nara, southwestern Japan
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日本西南部奈良中新世 Muro Ignimbrite 中非熔结相的再沉积
DOI：
10.4096/jssj.71.15
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Takaharu Sato
中科院分区：
文献类型：
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作者：
T. Nakajo;Takaharu Sato
日本西南部奈良中新世关阜凝灰岩段保存完好，室吕凝灰岩的火山碎屑沉积物再沉积。将凝灰岩段中的改造火山碎屑沉积自下而上划分为A、B、C三个单元。A单元主要由碎屑流和高浓度流沉积组成，它们在火山碎屑流沉积上埋藏了侵蚀通道。单元B由块状至层状凝灰岩组成，被认为是由静水中的悬浮物沉积而成。C单元为碎屑流和水流互层沉积向上变粗变厚序列。这些相变在火山碎屑流沉积的边缘分布中表现为崩塌、侵蚀和再沉积。
The Miocene Sekibutsu Tuff Member in Nara, southwestern Japan, is well preserved with resedimentation of volocaniclastic sediments of the Muro Ignimbrite. Reworked volocaniclastic deposits in the Sekibutsu Tuff Member is subdivided into three units, Unit A, B and C, in ascending order. Unit A is mainly comprised with debris-flow and hyperconcentrated-flow deposits, which buried eroding channel on the pyroclastic-flow deposits. Unit B consists of a massive to laminated tuff considered deposited from suspension in the standing water. Unit C is coarsening- and thickening-upward successions of interbedded debris-flow and streamflow deposits. These facies changes were represented in collapsing, erosion and resedimentation in the marginal distribution of the pyroclastic-flow deposits.
日本东北部沼泽湖火山喷发后，一条火凝结岩筑坝的河流爆发洪水
DOI：
--
发表时间：
2008
期刊：
Geological Society of America, Bulletin 120(印刷中)
影响因子：
--
作者：
Kataoka;K.S.;Urabe;A.;Manville;V;and. Kajiyama;A.
通讯作者：
A.