Data report: amorphous silica content of sediment from Sites C0011 and C0012 in the Shikoku Basin on the NanTroSEIZE transect 1
Data report: amorphous silica content of sediment from Sites C0011 and C0012 in the Shikoku Basin on the NanTroSEIZE transect 1
复制标题
数据报告：NanTroSEIZE 横断面四国盆地 C0011 和 C0012 地点沉积物中的无定形二氧化硅含量
DOI：
--
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
A. Hutton
中科院分区：
文献类型：
--
作者：
G. Spinelli;A. Hutton
我们确定了无定形二氧化硅含量从两个地点在四国盆地沿着南海海槽地震带实验样带，日本南部近海。我们研究了综合大洋钻探计划第322和333次考察期间取芯的C 0011和C 0012站点的半远洋泥。我们确定无定形二氧化硅含量使用碱浸技术。所有样品中无定形二氧化硅含量≤1.1重量%。无定形二氧化硅含量在浅部沉积物（岩性亚单元IA）中比在较深的沉积物中高。在现场C 0011，无定形二氧化硅含量从亚单元IA（海底以下252米以上[mbsf]）中的0.75-1.10重量%下降到更深岩性单元（252 mbsf以下）中的0.13-0.59重量%。在现场C 0012，来自亚单元IA的4个样品含有0.58-0.66重量%的无定形二氧化硅;来自较深岩性单元的样品含有0.13-0.40重量%的无定形二氧化硅。
We determined the amorphous silica content of sediment from two sites in Shikoku Basin along the Nankai Trough Seismogenic Zone Experiment transect, offshore southern Japan. We examined hemipelagic mud from Sites C0011 and C0012 cored during Expeditions 322 and 333 of the Integrated Ocean Drilling Program. We determined amorphous silica content using an alkaline leaching technique. Amorphous silica content is ≤1.1 wt% in all samples. Amorphous silica content is higher in the shallow sediment (lithologic Subunit IA) than in the deeper sediment. At Site C0011, amorphous silica content decreases from 0.75–1.10 wt% in Subunit IA (above 252 meters below seafloor [mbsf]) to 0.13–0.59 wt% in deeper lithologic units (below 252 mbsf). At Site C0012, four samples from Subunit IA contain 0.58–0.66 wt% amorphous silica; samples from deeper lithologic units contain 0.13–0.40 wt% amorphous silica.