scholarly journals GRAPTOLITES FROM THE UPPER ORDOVICIAN SECTION «VERKHNYAYA KARASU» IN THE CENTRAL PART OF GORNY ALTAI

2021 ◽  
Vol 2 (1) ◽  
pp. 125-129
Author(s):  
Elena V. Lykova ◽  
Nikolay V. Sennikov
Keyword(s):  
Altai Mountains ◽  
Upper Ordovician ◽  
Gorny Altai ◽  
Stratigraphic Interval

Taxonomic complex of graptolites from the «Verkhnyaya Karasu» section have been studied. This section is located in the central part of Gorny Altai Mountains. The section covers a large stratigraphic interval: from upper Ordovician (Sandbian Stage) to Middle Silurian (Telychian Stage). For the Ordovician, the Bugryshikha, Khankhara and Tekhten' formations are distinguished. For the Silurian, the Vtorye Utyosy, Syrovaty, Polaty, Chesnokovka and Chesnokovka formations are distinguished. Previously, in this section no graptolites were found in the upper part of the Bugryshikha formation. There is a large and diverse complex of taxa collected in 2020. The graptolites assemblage from the upper part of the Bugryshikha formation consists of Reteograptus uniformis Mu et Zhang, Reteograptus geinitzianus Hall, Eoglyptograptus euglyphus Mitchell, Orthograptus apiculatus Elles et Wood, Orthograptus whitfieldi (Hall), Rectograptus truncatus (Lapworth), Rectograptus ex.gr. truncatus (Lapworth), Hustedograptus sp., Callograptus sp.

scholarly journals STUDY OF GEOLOGICAL SECTIONS OF THE ORDOVIK AGE OF GORNY ALTAI

2021 ◽  
Vol 6 ◽  
pp. 109-115
Author(s):  
Danil A. Ilyin ◽  
Irina P. Kokorina
Keyword(s):  
Taxonomic Composition ◽  
Geological Survey ◽  
Altai Mountains ◽  
Siberian Branch ◽  
Russian Academy Of Sciences ◽  
Gorny Altai ◽  
The Future ◽  
Lithological Composition ◽  
Academy Of Sciences ◽  
Faunistic Composition

The article deals with the study of geological sections of the Ordovic age in Gorny Altai. On the territory of the Altai Mountains, outcrops of rocks of the Ordovic age were found. As a result of the work on the sections, the lithological composition was analyzed and the fauna was collected, the taxonomic composition of which was then determined in the Paleozoic laboratory of the Institute of Geological and Geological Development of the Siberian Branch of the Russian Academy of Sciences. On the basis of the data of geological survey, mapping of the territory, the results of the study of geological sections, their lithology and faunistic composition, it is planned to create an interactive cartographic service in the future.

First documentation of the Ordovician Guttenberg δ13C excursion (GICE) in Asia: chemostratigraphy of the Pagoda and Yanwashan formations in southeastern China

2008 ◽  
Vol 146 (1) ◽  
pp. 1-11 ◽  
Author(s):  
STIG M. BERGSTRÖM ◽  
CHEN XU ◽  
BIRGER SCHMITZ ◽  
SETH YOUNG ◽  
RONG JIA-YU ◽  
...  
Keyword(s):  
North American ◽  
First Record ◽  
Upper Ordovician ◽  
Yangtze Platform ◽  
Asian Continent ◽  
Southeastern China ◽  
Stratigraphic Unit ◽  
Baseline Values ◽  
Stratigraphic Interval

AbstractThe only published δ13C data from the Ordovician of China are from the Lower and Upper Ordovician, and only the latter records include a significant excursion, namely the Hirnantian excursion (HICE). Our recent chemostratigraphic work on the Upper Ordovician (Sandbian–Katian) Pagoda and Yanwashan formations at several localities on the Yangtze Platform and Chiangnan (Jiangnan) slope belt has resulted in the recognition of a positive δ13C excursion that has values of ~+1.5‰ above baseline values. This excursion starts a few metres above a stratigraphic interval withB. alobatusSubzone conodonts as well as graptolites of theN. gracilisZone. The distinctive conodontsAmorphognathusaff.Am. ventilatusandHamarodus europaeusfirst occur at, or very near, the excursion interval. Because these conodonts appear in the stratigraphic interval of the Guttenberg δ13C excursion (GICE) in Estonia, we identify the Chinese excursion as the GICE. This is the first record of the GICE in the entire Asian continent. It confirms that GICE is a global excursion and provides an illustration of how δ13C chemostratigraphy, combined with new biostratigraphic data, solves the problem of the previously controversial age of the Pagoda Formation and how this classical stratigraphic unit correlates with the Baltoscandian and North American successions.

scholarly journals INDEX SPECIES OF UPPER ORDOVICIAN CONODONTS FROM THE TELETSKOE LAKESIDE ALTAI

2021 ◽  
Vol 2 (1) ◽  
pp. 191-195
Author(s):  
Olga T. Obut ◽  
Nikolay V. Sennikov ◽  
Dmitry A. Pecherichenko
Keyword(s):  
Upper Ordovician ◽  
Index Species ◽  
Gorny Altai ◽  
First Time

New data on the conodont index species from Upper Ordovician of the Teletskoe Lakeside, Gorny Altai, are presented. For the first time for this region representatives of the genera Plectodina and Belodina were found.

scholarly journals Paleo-plateau/-seamount Limestone of the Cambrian Accretionary Complex in the Gorny Altai Mountains, Southern Siberia

2003 ◽  
Vol 112 (4) ◽  
pp. 563-585 ◽  
Author(s):  
Yuko UCHIO ◽  
Yukio ISOZAKI ◽  
Mikhail M. BUSLOV ◽  
Tsutomu OTA ◽  
Atsushi UTSUNOMIYA ◽  
...  
Keyword(s):  
Accretionary Complex ◽  
Altai Mountains ◽  
Southern Siberia ◽  
Gorny Altai

scholarly journals FIRST DATA ON THE LATE ORDOVICIAN CONODONTS SCYPHIODUS STAUFFER ON GORNY ALTAI

2021 ◽  
Vol 2 (1) ◽  
pp. 196-200
Author(s):  
Dmitry A. Pecherichenko ◽  
Olga T. Obut ◽  
Nikolay V. Sennikov
Keyword(s):  
Late Ordovician ◽  
Upper Ordovician ◽  
Gorny Altai ◽  
First Time

New data on conodonts from previously unstudied Upper Ordovician “Chechenek” Section on Gorny Altai are presented. Representatives of the conodont genus Scyphiodus Stauffer were discovered for the first time from this section.

A NEW DATA ON UPPER ORDOVICIAN CONODONTS FROM THE GURYANOVKA FORMATION, NORTHEAST OF GORNY ALTAI

2021 ◽  
pp. 3-11
Author(s):  
D. A. Pecherichenko ◽  
◽  
O. T. Obut ◽  
N. V. Sennikov ◽  
◽  
...  
Keyword(s):  
Upper Ordovician ◽  
Precise Position ◽  
Gorny Altai ◽  
Conodont Zone ◽  
Conodont Fauna ◽  
First Time

The detailed study of the Guryanovka Formation key sections at the northeast of Gorny Altai (Biya and Bura sections) for the first time revealed the representative collection of conodonts. The conodont fauna is composed of 12 species belong to 9 genera: Belodina compressa (Branson and Mehl, 1933), Phragmodus undatus Branson and Mehl, 1933, Panderodus gracilis (Branson and Mehl, 1933), Panderodus acostatus (Branson, Branson, 1947), Tasmanognatus careyi Burret, 1979, Aphelognathus sp., Panderodus sp., Drepanoistodus sp., Drepantodus sp., Colaptoconus sp., Paltodus sp., Scandodus sp. For the first time, the precise position of the P. undatus conodont Zone was defined in Gorny Altai (continuous Biya Section, base of unit 3).

THE RECTANGULAR IRON-SMELTING FURNACES OF GORNY ALTAI: THE PROBLEM OF ORIGIN AND CHRONOLOGY

2021 ◽  
Vol 27 ◽  
pp. 158-167
Author(s):  
VODYASOV E. ◽  
◽  
ZAITCEVA O. ◽  
Keyword(s):  
Central Asia ◽  
Field Work ◽  
Altai Mountains ◽  
Radiocarbon Dates ◽  
Iron Smelting ◽  
Previous Time ◽  
Gorny Altai ◽  
Sudden Appearance ◽  
Southeastern Altai

The article raises the questions related to the appearance of unique rectangular box-shape furnaces in the Altai mountains. These furnaces were the largest iron-smelting construction in Siberia and Central Asia. Archaeological field work carried out in 2018-2020 coupled with the series of radiocarbon dates made it possible to establish that furnaces of this type appeared in the Southeastern Altai not in the era of the Turkic Khaganates, as it was previously thought, but in a previous time within the 3rd-5th centuries AD. The article discusses the design and productivity of the box-shape furnaces. It is hypothesized that the similar in shape Xiongnu pottery kilns type could have been a prototype of large rectangular structures of the box-shape linear furnaces. Radiocarbon analyzes have proven the synchronicity of the Xiongnu pottery kilns and the rectangular furnaces. The sudden disappearance of the box-shape furnaces in the Altai Mountains in the 7th-8th centuries AD and the same sudden appearance of the similar furnaces in Japan in the same period is explained by the possible migration of smelters in the era of the Second East Turkic Khaganate. Keywords: archaeometallurgy, iron-smelting furnaces, Gorny Altai, Xiongnu-Xianbei time

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