Bulletin of the North-East Science Center最新文献_第4页

Археологические исследования Г.А.Пытлякова в Оймяконском районе Якутии

Bulletin of the North-East Science Center Pub Date : 2022-12-30 DOI: 10.34078/1814-0998-2022-4-94-103

A. Lebedintsev

引用次数: 0

Продолжительность существования и скорость образования видов и родов двустворчатых моллюсков в перми Северо-Востока Азии 在亚洲东北部permi地区，双壳软体动物的寿命和繁殖速度

Bulletin of the North-East Science Center Pub Date : 2022-12-30 DOI: 10.34078/1814-0998-2022-4-10-23

A. S. Biakov

{"title":"Продолжительность существования и скорость образования видов и родов двустворчатых моллюсков в перми Северо-Востока Азии","authors":"A. S. Biakov","doi":"10.34078/1814-0998-2022-4-10-23","DOIUrl":"https://doi.org/10.34078/1814-0998-2022-4-10-23","url":null,"abstract":"The article discussed the duration of existence and the rate of formation for Permian bivalve species and genera in Northeast Asia. It has been established that the species existed averagely for 2-5 million years; and the genera, for 10-20 million years. The vast majority of long-lived taxa characterize the Early Permian (Asselian-Middle Artinskian) assemblages. The proportion of long-lived species that existed for over 10 million years exceeds 25 % of all bivalve species existing on this stage. Since the end of the Artinskian (and even more so since the Kungurian), the number of relatively short-lived species increased significantly. The possible reason for this phenomenon might have been an increase in the frequency of manifestation of geobiospheric, mainly extinction (Biakov, 2012a), events, resulted from an increase in the Earth endogenous activity, and expressed in the manifestation of volcanic activity of various nature and the deep fluids impact on the biota. A long time interval, covering almost the entire Lower Permian and characterized by a relatively calm course of geological history, was replaced by an interval with sharp upheavals manifested, which also affected the development of the entire biota, including bivalves. The rate of taxa formation is also associated with geobiospheric events and is controlled primarily by extinction events.","PeriodicalId":341033,"journal":{"name":"Bulletin of the North-East Science Center","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121340513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

О золотоносности мелководной зоны шельфа Юго-Западной Камчатки 堪察加半岛西南部浅水区的金矿

Bulletin of the North-East Science Center Pub Date : 2022-09-30 DOI: 10.34078/1814-0998-2022-3-25-40

V. Y. Kungurova

{"title":"О золотоносности мелководной зоны шельфа Юго-Западной Камчатки","authors":"V. Y. Kungurova","doi":"10.34078/1814-0998-2022-3-25-40","DOIUrl":"https://doi.org/10.34078/1814-0998-2022-3-25-40","url":null,"abstract":"The materials, obtained from previous (1972-2019) studies of over 300 km of the coastal land strip in Southwestern Kamchatka and the adjoining underwater slope of the Sea of Okhotsk (in the interfluve of the Bolshaya and the Kikhchik rivers) were analyzed. Gold-rich zones (> 60 mg/m3) in the form of subparallel lenses, oriented along the sea shoreline, were identified between 6.3-30 m isobaths in the shallow marine shelf zone. The gold content of the submarine coastal slope correlated directly with the sediments of the upper coastal zone. Higher gold concentrations (up to hundreds of mg/m3) were detected in Holocene marine sediments of the shallow marine shelf in sampling intervals 0 to 2.0 m. They are mostly confined either to the upper, steepest part of the submarine slope or to the first or second terraced level. These are the areas of the most active impact, near the shorelines (modern and submerged), within which glacial and water-glacial formations are often exposed by erosion. Most of the gold concentrate halos related to ancient shorelines, the western boundary of which lies within 25-30 m isobaths, and to paleovalleys, identified by seismoacoustic profiling. In paleovalleys, flooded by the sea and buried under marine sediments, alluvial placers similar to Tikhangou in Primorsky Krai may be revealed. The most promising within the investigated territory was the area of underwater coastal slope within the Severnaya Mitoga - Utka - Khomutina interfluve, between 5.3-30 m isobaths, where concentrate halos with considerable gold concentrations from 60 to 500-1186 mg/m3 had been revealed.","PeriodicalId":341033,"journal":{"name":"Bulletin of the North-East Science Center","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115032893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Анализ особенностей захоронения остатков животных мамонтовой фауны и ископаемой мамонтовой кости 分析猛犸象动物和猛犸象化石的埋葬特征

Bulletin of the North-East Science Center Pub Date : 2022-09-30 DOI: 10.34078/1814-0998-2022-3-73-84

E. A. Nesterova, N. N. Nikolaeva, E. S. Petukhova

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Новые данные о составе пермских терригенных отложений Омолонского массива (Северо-Восток России): значение для палеогеографии и геодинамических реконструкций

Bulletin of the North-East Science Center Pub Date : 2022-09-30 DOI: 10.34078/1814-0998-2022-3-3-15

I. V. Brynko, T. I. Mikhalitsyna, I. L. Vedernikov, A. S. Biakov

引用次数: 0

Российский опыт пространственной трансформации региональных экономических систем: урбанизация Крайнего Северо-Востока России 俄罗斯空间经济转型的经验:俄罗斯最东北部的城市化

Bulletin of the North-East Science Center Pub Date : 2022-09-30 DOI: 10.34078/1814-0998-2022-3-120-126

O. S. Favstritskaya

引用次数: 0

Vegetation Response to Climate Change during the Middle Calabrian in Arctic Chukotka 北极楚科奇中部卡拉布里亚植被对气候变化的响应

Bulletin of the North-East Science Center Pub Date : 2022-09-30 DOI: 10.34078/1814-0998-2022-3-63-72

A. Lozhkin, P. Anderson

{"title":"Vegetation Response to Climate Change during the Middle Calabrian in Arctic Chukotka","authors":"A. Lozhkin, P. Anderson","doi":"10.34078/1814-0998-2022-3-63-72","DOIUrl":"https://doi.org/10.34078/1814-0998-2022-3-63-72","url":null,"abstract":"A palynological record obtained from El'gygytgyn Lake sediments, which spans the 1.244-1.304 million years (Ma) interval of the Calabrian Stage, shows repeated changes in the plant communities of Arctic Chukotka. These variations in the vegetation further suggest a dominance of interstadial and interglacial climates. Eight pollen zones were distinguished within this interval. According to the working age model for the composite El'gygytgyn core, these pollen zones correspond to marine oxygen isotope stages (MIS) 40, 39, and 38. The upper boundary of MIS 38 coincides with magnetic event the Cobb Mountain (1.240 Ma), which is one of the main chronological landmarks used in creating the core's chronology. The features of modern pollen-spore spectra obtained from the water-sediment interface within the lake aided in reconstructing both the local and regional paleovegetation. The consistent presence of Larix pollen throughout the 1.244-1.304 Ma interval indicates that even under the severest climatic conditions Larix forest-tundra persisted on the Anadyr Plateau and near El'gygytgyn Lake. This pattern differs sharply from that seen in the Middle and Late Pleistocene when herb-dominated tundra characterized the glacial intervals in the Arctic. The spore-pollen spectra further show that the warmest climatic conditions occurred during MIS 39. The data from the 1.244-1.304 Ma interval represent the last step in completing the Quaternary vegetation history from this unique site in Arctic Siberia.","PeriodicalId":341033,"journal":{"name":"Bulletin of the North-East Science Center","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123168176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Оценка пучинистости крупно-обломочных грунтов с суглинистым заполнителем (Забайкальский край) 用硫化填充物(zabekahl边缘)计算大碎屑土壤的厚度

Bulletin of the North-East Science Center Pub Date : 2022-09-30 DOI: 10.34078/1814-0998-2022-3-56-62

О. А. Balandin, N. Peshkov, O. Sokolova, V. S. Sokolova

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Трематода Plagiorchis koreanus (Plagiorchiidae) от сибирской ночницы (Myotis sibiricus) из Северного Приохотья (Магаданская область) 西伯利亚夜床(mayotis sibiricus)来自马加丹北部地区

Bulletin of the North-East Science Center Pub Date : 2022-09-30 DOI: 10.34078/1814-0998-2022-3-101-105

O. M. Orlovskaya, N. Е. Dokuchaev, G. I. Atrashkevich, A. N. Lazutkin

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Исследование якутского Санга-Талонского могильника на Верхней Колыме 雅库茨克桑塔隆墓的研究

Bulletin of the North-East Science Center Pub Date : 2022-09-30 DOI: 10.34078/1814-0998-2022-3-106-111

A. Lebedintsev

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