Characteristics and provenance implications of heavy mineral in core OS03-1 from the east-southern Okhotsk Sea

Wang Kunshan; Shi Xuefa; Wu Yonghua; Zou Jianjun; Jiang Xiaoli

doi:10.3969/j.issn.0253-4193.2014.05.020

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Wang Kunshan, Shi Xuefa, Wu Yonghua, Zou Jianjun, Jiang Xiaoli. Characteristics and provenance implications of heavy mineral in core OS03-1 from the east-southern Okhotsk Sea[J]. Haiyang Xuebao, 2014, 36(5): 177-185. doi: 10.3969/j.issn.0253-4193.2014.05.020

Citation:

Wang Kunshan, Shi Xuefa, Wu Yonghua, Zou Jianjun, Jiang Xiaoli. Characteristics and provenance implications of heavy mineral in core OS03-1 from the east-southern Okhotsk Sea[J]. Haiyang Xuebao, 2014, 36(5): 177-185. doi: 10.3969/j.issn.0253-4193.2014.05.020

Citation:

Wang Kunshan, Shi Xuefa, Wu Yonghua, Zou Jianjun, Jiang Xiaoli. Characteristics and provenance implications of heavy mineral in core OS03-1 from the east-southern Okhotsk Sea[J]. Haiyang Xuebao, 2014, 36(5): 177-185. doi: 10.3969/j.issn.0253-4193.2014.05.020

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Characteristics and provenance implications of heavy mineral in core OS03-1 from the east-southern Okhotsk Sea

doi: 10.3969/j.issn.0253-4193.2014.05.020

Key Laboratory of Marine Sedimentology & Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China

Received Date: 2013-05-04
Rev Recd Date: 2014-01-04

Abstract

Abstract

Composition and assemblage characteristics of heavy minerals were analyzed in core OS03-1 sediment collected from the Academy of Sciences Rise of southeastern Okhotsk Sea. The results show that the dominant minerals are hyperthene,epidote and common hornblende,and characteristic minerals are titanomagnetite and augite; the sediments are mostly ice-rafted debris（IRD) and volcanogenic matter. IRD were mainly derived from the western and northern Okhotsk Sea,and a little from Kamchatka peninsula. Volcanogenic matter was mainly from Kamchatka Peninsula and Kurile Islands. Three tephra layers were identified. The first layer is characterized by special color,grain size and mineral composition,which was same to the well studied K2 tephra layer and deposited at 26.0 ka BP. The third layer could be recognized by color,but was clearly diluted by terrigenous sediment. The second tephra layer couldn't be distinguished by color and grain size because of mixing with terrigenous sediment. The study also shows that composition and assemblage of heavy minerals are both effective indicators of sediment sources,and credible indentifying index of tephra,especially those diluted by terrigenous matter.
- Okhotsk Sea,
- sediment core,
- heavy mineral,
- tephra,
- matter source

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References(13)

References

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