Magnetostratigraphy and tephrochronology of the Upper Quaternary sediments in the Okhotsk Sea: implication of terrigenous, volcanogenic and biogenic matter supply

Gorbarenko, Sergey A; Nürnberg, Dirk; Derkachev, A. N.; Астахов, А. С.; Southon, John; Kaiser, André

doi:10.1016/s0025-3227(02)00164-0

Cited by 79 publications

(50 citation statements)

References 24 publications

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“…Major Plosky tephra PL2 was found in Bering Sea cores at a distance of >600 km from the source. This is the second Holocene Kamchatka tephra with a known source identified in marine cores; the other is the KO tephra associated with the Kurile Lake caldera (Gorbarenko et al 2002). PL2 is the only Holocene tephra thus far identified in marine cores on the east side of the peninsula.…”

Section: Marker Tephra Layers From Ploskymentioning

confidence: 87%

“…This tephra, coded SR1 during the on-board description, came from semi-liquid sediments enriched in diatoms and carbonate detritus (small, thin-shelled forams and their fragments; coccoliths), which suggests they were deposited during the late glacial-early Holocene warming period (12.4-8.3 cal ka BP according to Gorbarenko 1996;Gorbarenko et al 2002). In core SO201-2-77KL, strongly bioturbated sediments rich in up to 3-cm-thick tephra lenses are present between 113 and 122 cm.…”

Section: Western Bering Sea Coresmentioning

confidence: 99%

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Early Holocene M~6 explosive eruption from Plosky volcanic massif (Kamchatka) and its tephra as a link between terrestrial and marine paleoenvironmental records

Пономарева

Portnyagin

Derkachev

et al. 2013

Int J Earth Sci (Geol Rundsch)

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Section: Marker Tephra Layers From Ploskymentioning

confidence: 87%

Section: Western Bering Sea Coresmentioning

confidence: 99%

Early Holocene M~6 explosive eruption from Plosky volcanic massif (Kamchatka) and its tephra as a link between terrestrial and marine paleoenvironmental records

Пономарева

Portnyagin

Derkachev

et al. 2013

Int J Earth Sci (Geol Rundsch)

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“…In Kamchatka, the KO has been traced north to Karymsky, Maly and Bolshoi Semiachik volcanoes, where it overlies the 7900 14 C years BP Karymsky caldera deposits (Braitseva et al, 1997b). KO ash was dispersed to the northwest of the caldera across the Sea of Okhotsk, where it has been identified in sediment cores (Gorbarenko et al, 2000(Gorbarenko et al, , 2002, and on mainland Asia, from the Magadan region to the upper streams of the Indigirka River, about 1700 km NW of the source (Fig. 8, inset) (Melekestsev et al, 1991;Anderson et al, 1998).…”

Section: Distal Ash-deposits Of the Kurile Lake Caldera-forming Eruptmentioning

confidence: 99%

“…3F); 7: 5 -7 cm very fine ash, about 1000 km NW of the source, Magadan region, Asia mainland; 8: 3 cm thick very fine ash from a core from Elikchan Lake (60j45VN, 151j53VE) (sample provided by tephra from Ksudach and Karymsky caldera ashes which were erupted about the same time (Braitseva et al, 1997b). The KO marker ash has been used in paleovolcanological reconstructions Melekestsev et al, 1990Melekestsev et al, , 1994Melekestsev et al, , 1999Seliangin and Ponomareva, 1999), marine research (Gorbarenko et al, 2000(Gorbarenko et al, , 2002, and environmental studies (Anderson et al, 1998). It has important tephrochronological uses as it allows correlation of various depositional successions over a large area, from Kamchatka to mainland Asia across the Sea of Okhotsk.…”

Section: Distal Ash-deposits Of the Kurile Lake Caldera-forming Eruptmentioning

confidence: 99%

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The 7600 (14C) year BP Kurile Lake caldera-forming eruption, Kamchatka, Russia: stratigraphy and field relationships

Пономарева

Kyle

Мелекесцев

et al. 2004

Journal of Volcanology and Geothermal Research

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The 7600 14 C-year-old Kurile Lake caldera-forming eruption (KO) in southern Kamchatka, Russia, produced a 7-km-wide caldera now mostly filled by the Kurile Lake. The KO eruption has a conservatively estimated tephra volume of 140 -170 km 3 making it the largest Holocene eruption in the Kurile -Kamchatka volcanic arc and ranking it among the Earth's largest Holocene explosive eruptions. The eruptive sequence consists of three main units: (I) initial phreatoplinian deposits; (II) plinian fall deposits, and (III) a voluminous and extensive ignimbrite sheet and accompanying surge beds and co-ignimbrite fallout. The KO fall tephra was dispersed over an area of >3 million km 2 , mostly in a northwest direction. It is a valuable stratigraphic marker for southern Kamchatka, the Sea of Okhotsk, and a large part of the Asia mainland, where it has been identified as a f 6 to 0.1 cm thick layer in terrestrial and lake sediments, 1000 -1700 km from source. The ignimbrite, which constitutes a significant volume of the KO deposits, extends to the Sea of Okhotsk and the Pacific Ocean on either side of the peninsula, a distance of over 50 km from source. Fine co-ignimbrite ash was likely formed when the ignimbrite entered the sea and could account for the wide dispersal of the KO fall unit. Individual pumice clasts from the fall and surge deposits range from dacite to rhyolite, whereas pumice and scoria clasts in the ignimbrite range from basaltic andesite to rhyolite. Ignimbrite exposed west and south of the caldera is dominantly rhyolite, whereas north, east and southeast of the caldera it has a strong vertical compositional zonation from rhyolite at the base to basaltic andesite in the middle, and back to rhyolite at the top. Following the KO eruption, Iliinsky volcano formed within the northeastern part of the caldera producing basalt to dacite lavas and pyroclastic rocks compositionally related to the KO erupted products. Other post-caldera features include several extrusive domes, which form islands in Kurile Lake, submerged cinder cones and the huge silicic extrusive massif of Dikii Greben' volcano. D

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Sea‐ice conditions in the Okhotsk Sea during the last 550 kyr deduced from environmental magnetism

Yamazaki

Inoue

Shimono

et al. 2013

Geochem Geophys Geosyst

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[1] Reconstructing past sea-ice conditions in the Okhotsk Sea is important because sea-ice conditions vary in response to global climate changes, which in turn may affect global ocean circulation through intermediate water mass formation. We conducted an environmental magnetic study of six cores from three stations in the central Okhotsk Sea to better understand temporal and spatial sea-ice variations. Intercore correlations and age estimations are based mainly on geomagnetic paleointensity; an oxygenisotope stratigraphy is available for one station. Magnetic susceptibility (MS) minima are accompanied by maxima in color b*, the ratio of the anhysteretic remanent magnetization susceptibility to saturation isothermal remanent magnetization (k ARM /SIRM), and the S-ratio, which indicates a higher proportion of biogenic to terrigenous magnetic components. This reflects enhanced ocean productivity. First-order reversal curve diagrams and IRM component analyses support the dominance of biogenic magnetite at MS minima. In contrast, color b*, k ARM /SIRM, and S-ratio values are low when MS is high, which indicates an increased proportion of the terrigenous component that was probably transported as icerafted debris (IRD). For the southern two stations, IRD accumulation increased in glacial and deglacial periods, which implies mobile sea-ice conditions even in full glacials. This was succeeded by extremely enhanced ocean productivity in early interglacials, which suggests nearly ice-free conditions. For the northernmost station, on the other hand, IRD accumulation was low in glacials and increased in early interglacials, which indicates perennial sea-ice coverage with little mobility in glacials. Succeeding ocean-productivity enhancement was delayed compared to the southern stations.

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Magnetostratigraphy and tephrochronology of the Upper Quaternary sediments in the Okhotsk Sea: implication of terrigenous, volcanogenic and biogenic matter supply

Cited by 79 publications

References 24 publications

Early Holocene M~6 explosive eruption from Plosky volcanic massif (Kamchatka) and its tephra as a link between terrestrial and marine paleoenvironmental records

Early Holocene M~6 explosive eruption from Plosky volcanic massif (Kamchatka) and its tephra as a link between terrestrial and marine paleoenvironmental records

The 7600 (14C) year BP Kurile Lake caldera-forming eruption, Kamchatka, Russia: stratigraphy and field relationships

Sea‐ice conditions in the Okhotsk Sea during the last 550 kyr deduced from environmental magnetism

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