Characteristics and ages of tephra layers in the central Okhotsk Sea over the last 350kyr

Derkachev, A. N.; Nikolaeva, N. A.; Gorbarenko, Sergey A; Harada, Naomi; Sakamoto, Tatsuhiko; Iijima, Koichi; Sakhno, V. G.; Hua, Lv Hua; Wang, K.

doi:10.1016/j.dsr2.2011.05.015

Cited by 20 publications

(8 citation statements)

References 39 publications

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“…4), implying a mixture with terrigenous sediments. Similar phenomenon of occurrence of high contents of terrigenous detrital minerals in MR1 volcanic ash layer has been reported earlier (Derkachev et al, 2012). Hypersthene, an indicator of volcanic detritus, shows obvious peaks at volcanic layers (Fig.…”

Section: Light and Heavy Mineralssupporting

confidence: 57%

Sediment provenance variations in the southern Okhotsk Sea over the last 180 ka: Evidence from light and heavy minerals

Wang

Shi

Zou

et al. 2017

Palaeogeography, Palaeoclimatology, Palaeoecology

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In this study, we investigate light and heavy minerals in sediment core OS03-1 located at the Academy of Sciences Rise of the southern Okhotsk Sea to determine their distributions and sources over the last 180 ka (thousand years). The sediment mainly consists of terrigenous and volcanic detritus. Ubiquitous drop-stones and volcanic detritus throughout the core and high detrital input suggest that sea ice, driven by wind and Kamchatka Current, was the main transport agent of detrital materials to the southern Okhotsk Sea. The ternary diagram of heavy minerals (hornblende-hypersthene-epidote) shows an expansion of detritus provenance from the eastern in cold periods to the northeastern in warm intervals of the Okhotsk Sea. It mainly relates to the shift of Aleutian Low. Combined with previous records, accumulation rates of quartz indicated a maximum extent but not perennial sea ice coverage during the glacial periods.

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Section: Light and Heavy Mineralssupporting

confidence: 57%

Sediment provenance variations in the southern Okhotsk Sea over the last 180 ka: Evidence from light and heavy minerals

Wang

Shi

Zou

et al. 2017

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…Kamchatka tephras have also been identified off Kamchatka in terrestrial and marine environments on the Bering and Karaginsky Islands (Kyle et al, 2011), in the Sea of Okhotsk cores (e.g., Nürnberg and Tiedemann, 2004;Ponomareva et al, 2004;Derkachev et al, 2012), and as far as mainland Asia (Gorbarenko et al, 2002a, b;Ponomareva et al, 2004).…”

Section: Kamchatka Volcanoesmentioning

confidence: 99%

“…The K2 tephra at 27 354-30 325 cal. BP from the northern part of the Kurile Islands most likely originates from Nemo Caldera (Braitsheva et al, 1995;Melekestev et al, 1997;Derkachev et al, 2012). The source of the 177 ka Rauchua tephra is unknown, but it likely comes from the Karymsky volcanic center (Ponomareva et al, 2013b).…”

Section: Kamchatka Volcanoesmentioning

confidence: 99%

“…The high concentration of tephra layers in marine sediment cores in the adjacent seas supports the notion of a high eruption frequency on Kamchatka in the Plio-Pleistocene. From more than 40 records from the Sea of Okhotsk, spanning the last 350 ky, a sequence of about 22 tephra layers has been documented, including at least 9 widespread ash layers (e.g., Gorbarenko et al, 1998Gorbarenko et al, , 2000Gorbarenko et al, , 2002aDerkachev et al, 2004Derkachev et al, , 2012Nürnberg and Tiedemann, 2004). Western North Pacific deep-sea sediments document numerous explosive eruptions over the last 5 million years with an increase in the number and thickness of volcanic ash layers from 2.6 Ma (Cao et al, 1995: ODP Leg 145, sites 881, 882, 883 and 884;Prueher and Rea, 2001: ODP 887, 883, 882).…”

Section: Kamchatka Volcanoesmentioning

confidence: 99%

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Volcanic ash layers in Lake El'gygytgyn: eight new regionally significant chronostratigraphic markers for western Beringia

et al. 2014

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Ash layers from explosive volcanic eruptions (i.e., tephra) represent isochronous surfaces independent from the environment in which they are deposited and the distance from their source. In comparison to eastern Beringia (nonglaciated Yukon and Alaska), few Plio-Pleistocene distal tephra are known from western Beringia (non-glaciated arctic and subarctic eastern Russia), hindering the dating and correlation of sediments beyond the limit of radiocarbon and luminescence methods. The identification of eight visible tephra layers (T0-T7) in sediment cores extracted from Lake El'gygytgyn, in the Far East Russian Arctic, indicates the feasibility of developing a tephrostratigraphic framework for this region. These tephra range in age from ca 45 ky to 2.2 My old, and each is described and characterized by its major-, minor-, trace-element and Pb isotope composition. These data show that subduction-zone-related volcan-

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“…The additional source of terrigenous matter is tephra delivered by winds from the nearby Kurily‐Kamchatka volcanic belt [ Bezrukov , ] and deposited episodically. In late Quaternary, sediments of this basin, some tephra layers, which are up to several centimeters thick, are found [ Gorbarenko et al ., ; Derkachev et al ., ]. Apparently, tephra from less extensive or more distant eruptions are also accumulated in the sea sediments, however, having less thickness; it is masked by bioturbation and not identified visually during routine description.…”

Section: Introductionmentioning

confidence: 99%

Geochemical multielement signatures of glacial and interglacial facies of the Okhotsk Sea deepwater sediments during the past 350 kyr: A response to global climate changes at the orbital and millennial scales

et al. 2015

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The previously dated deepwater sediment core MR06-04 PC-7R (length 1723 cm; 350 kyr) recovered from the central Okhotsk Sea (OS) was analyzed for biogenic compounds and for 63 chemical elements (using the inductively coupled plasma-mass spectrometry method) with a high resolution (1 cm;~200 years). A one box model with two main members" and mathematical methods (based on multielemental composition of sediments) for the calculation of weight fractions (at each time slice) of two main types of geochemical facies that dominate during considerably diverse climatic periods (glacial maxima and interglacial optima) were proposed and tested. This model can be applied to other analogous natural systems whose sedimentation is driven by two main types of geochemical facies. The application of the developed model to the studied core revealed that variations of weight fractions of the typical interglacial and glacial geochemical facies in the sediments along the core depth (named as warm and cold "covariators," respectively) change synchronously with global and regional climate variability. Profiles of warm and inversed cold covariators coincide tightly, and their values increase during warm marine isotope stages and substages and decrease during cold ones over the last 350 kyr. Millennial scale changes in covariators had occurred simultaneously with abrupt variability in the OS productivity and sediment lithology and with millennial global climate variability. Some discrepancies in the warm and inversed cold covariators calculated using specific mathematical treatments revealed the episodic influence of volcanogenic matter presented in the core by visible tephra layers and cryptotephras.

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Characteristics and ages of tephra layers in the central Okhotsk Sea over the last 350kyr

Cited by 20 publications

References 39 publications

Sediment provenance variations in the southern Okhotsk Sea over the last 180 ka: Evidence from light and heavy minerals

Sediment provenance variations in the southern Okhotsk Sea over the last 180 ka: Evidence from light and heavy minerals

Volcanic ash layers in Lake El'gygytgyn: eight new regionally significant chronostratigraphic markers for western Beringia

Geochemical multielement signatures of glacial and interglacial facies of the Okhotsk Sea deepwater sediments during the past 350 kyr: A response to global climate changes at the orbital and millennial scales

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