Late cretaceous to early paleogene paleomagnetic results from Sikhote Alin, far eastern Russia: implications for deformation of East Asia

Otofuji, Yo–ichiro; Matsuda, T.; Itaya, Tetsumaru; Shibata, Takeshi; Matsumoto, Michiko; Yamamoto, Takahiro; Morimoto, Chiyo; Kulinich, R; Zimin, Petr S.; Matunin, Anatoly P.; Sakhno, V. G.; Kimura, Katsuhiro

doi:10.1016/0012-821x(94)00254-v

Cited by 48 publications

(39 citation statements)

References 29 publications

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“…In the Late Cretaceous and Cenozoic, the continental blocks of Sikhote-Alin were affected by rifting and magmatism (Otofuji et al, 1995(Otofuji et al, , 2002. A prominent episode of ignimbrite volcanism took place in the Late Cretaceous (Turonian to Campanian; ∼ 90-75 Ma) and in the first half of the Palaeogene (Palaeocene-Eocene; ∼ 65-45 Ma) (Grebennikov et al, 2014).…”

Section: Brief Geological Characteristics Of the Research Areasmentioning

confidence: 99%

Geological nature of mineral licks and the reasons for geophagy among animals

Паничев

Попов²,

Chekryzhov³

et al. 2017

Biogeosciences

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Abstract. In this paper, the reasons for geophagy (the eating of rocks by wild herbivores) in two regions of the eastern Sikhote-Alin volcanic belt are considered. The mineralogical and chemical features of the consumed rocks, as well as the geological conditions of their formation, are investigated. A comparative analysis of the mineral and chemical composition of the consumed rocks and the excrement of the animals, almost completely consisting of mineral substances, is carried out. It is established that the consumed rocks are hydrothermally altered rhyolitic tuffs located in the volcanic calderas and early Cenozoic volcano-tectonic depressions. They consist of 30-65 % from zeolites (mainly clinoptilolites) and smectites, possessing powerful sorption properties. According to the obtained data, the main reason for geophagy may be connected with the animals' urge to discard excessive and toxic concentrations of certain elements that are widespread in specific habitats and ingested with forage plants.

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Section: Brief Geological Characteristics Of the Research Areasmentioning

confidence: 99%

Geological nature of mineral licks and the reasons for geophagy among animals

Паничев

Попов²,

Chekryzhov³

et al. 2017

Biogeosciences

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“…1) The bimodal distribution of grain ages of SA-31 shows that the accidental detrital grains have kept their old ages, and thus this sample has not been suffered any thermal event after its deposition. 2) Biotite K-Ar ages of SA-31 and SA-32 were measured at 50.6 ± 1.2 Ma and 52.6 ± 1.3 Ma, respectively (Otofuji et al, 1995). These K-Ar ages coincide with the zircon fission-track ages within their confident limits.…”

Section: Fission-track Ages Of the Bogopol And Sijanov Groupsmentioning

confidence: 59%

“…4, 1998 287 FT age and Magnetic Susceptibility of Volcanic Rocks, Sikhote Alin Table 1 Cretaceous to Paleogene system of Sikhote Alin (after Sakhno et al, 1991a, b). W and B show whole-rock an biotite K-Ar ages, respectively (Otofuji et al, 1995). fission-track age has low closure temperature, about 240°C, the obtained ages may show reset ages by thermal events after their deposition.…”

Section: Fission-track Ages Of the Bogopol And Sijanov Groupsmentioning

confidence: 90%

“…The fission-track ages of the Sijanov Group also show Paleogene ages, 46.8 Ma to 53.5 Ma. Although the whole rock K-Ar age of the Samarga basalt of the Sijanov Group shows the latest Cretaceous, 66.0 ± 2.0 Ma (Otofuji et al, 1995), its stratigraphical relationships to the pyroclastic rocks of the Sijanov Group near the sampling point are obscure. Thus, main parts of the Sijanov Group are probably of the Paleogene.…”

Section: Fission-track Ages Of the Bogopol And Sijanov Groupsmentioning

confidence: 99%

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Fission–track Ages and Magnetic Susceptibility of Cretaceous to Paleogene Volcanic Rocks in Southeastern Sikhote Alin, Far East Russia

Matsuda¹,

Sakiyama²,

Enami

et al. 1998

Resource Geology

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Seven zircon fission-track ages and 30 magnetic susceptibilities were measured on welded pyroclastic rocks from the Bogopol and Sijanov Groups of the Cretaceous to Paleogene volcanic rocks in the southeastern part of the eastern Sikhote Alin volcano-plutonic belt, Far East Russia. The fission-track ages range from 42.7 Ma to 64.0 Ma which indicate that both the groups are of Early Paleogene time. Two thirds of the samples from the Bogopol Group have high magnetic susceptibility values, more than 3 × 10 -3 SI unit, which imply that they are of the magnetite-series, whereas the samples from the Sijanov Group show 3 × 10 -3 to 8 × 10 -5 SI unit which suggest this group of probably the ilmenite-series.The Paleogene age and high magnetic susceptibility of the Bogopol Group are quite similar to the Paleogene igneous rocks of the San'in belt, Southwest Japan. This suggests, taking accounts of the opening of the Japan Sea, that the eastern Sikhote Alin volcano-plutonic belt continued to the San'in Belt, and that the Paleogene igneous rocks along the Japan Sea coast of Northeast Japan were situated along the volcanic front of the eastern Sikhote Alin volcano-plutonic belt.

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“…Simultaneous inversion of these areas implies that an amalgamation of migrated terranes occurred by the end of the Paleogene. [34,35] and Otofuji et al [36], respectively. The age range of the Oyubari data (3: [7]) is shorter than the height of the median symbol.…”

Section: Estimate Of N-s Transportationmentioning

confidence: 97%

Cretaceous Research: Paleolatitudes and Northward Migration of Crustal Fragments in the NW Pacific Inferred from Paleomagnetic Studies

Itoh¹,

Takashima²

2017

Dynamics of Arc Migration and Amalgamation - Architectural Examples From the NW Pacific Margin

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Lateral migration of the Oshima and Sorachi-Yezo Belts within south central Hokkaido was quantitatively evaluated by means of paleomagnetic analyses in order to identify allochthonous blocks on the northwestern Pacific margin. The remanence stability of the Late Jurassic to Early Cretaceous voluminous igneous succession of the Kumaneshiri and Sorachi Groups and the overlying forearc sediments of the Cretaceous Yezo Group was evaluated through rock magnetic experiments. Twelve of the sites yielded characteristic primary components residing in mixtures of titanomagnetite and hematite having various mixing ratios. After an appropriate correction of inclinations' shallowing of the post-depositional detrital remanent magnetization (pDRM) based on anisotropic acquisition experiments of the isothermal remanent magnetization (IRM), we confirmed significantly shallow inclinations even for the flattening-corrected data set, implying northward transportation after the emplacement. Based on comparisons to expected paleomagnetic directions calculated from contemporaneous reference poles, we conclude that the allochthonous blocks, including south central Hokkaido, migrated northerly during the Early Cretaceous. Previous investigations of paleomagnetism and numerical modeling of burial processes of sedimentary basins indicate that some crustal blocks in Hokkaido and NE Japan experienced delayed transportation and eventually amalgamated with the mother continent by the end of the Paleogene.

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Late cretaceous to early paleogene paleomagnetic results from Sikhote Alin, far eastern Russia: implications for deformation of East Asia

Cited by 48 publications

References 29 publications

Geological nature of mineral licks and the reasons for geophagy among animals

Geological nature of mineral licks and the reasons for geophagy among animals

Fission–track Ages and Magnetic Susceptibility of Cretaceous to Paleogene Volcanic Rocks in Southeastern Sikhote Alin, Far East Russia

Cretaceous Research: Paleolatitudes and Northward Migration of Crustal Fragments in the NW Pacific Inferred from Paleomagnetic Studies

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