Isotopic and geochemical characteristics of Cambrian phosphorites of Karatau Basin (Southern Kazakhstan)

I. A. Vishnevskaya; V. I. Malov; N. G. Soloshenko; A. F. Letnikova; V. Yu Kiseleva; A. V. Ivanov

doi:10.21638/spbu07.2018.302

Isotopic and geochemical characteristics of Cambrian phosphorites of Karatau Basin (Southern Kazakhstan)

I. A. Vishnevskaya, V. I. Malov, N. G. Soloshenko, A. F. Letnikova, V. Yu Kiseleva, A. V. Ivanov

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

Аннотация

The article is devoted to studying of isotope-geochemical characteristics of phosphorite and the enclosing carbonate Karatau Phosphorus deposit. As a result of the work on the identification of the least altered rocks, the primary isotopic composition of Sr, C and O in the water of the Karatau basin was established, as well as the isotopic composition of Nd phosphorites. Kyrshabakty Formation underlying phosphorite characterized ⁸⁷ Sr/ ⁸⁶ Sr ratio 0.70839, δ ¹³ C value ranges from +0.2 to 0.6 ‰. The primary Sr isotopic composition of the phosphate-bearing Chulaktau Formation, varies from 0.70877 to 0.70905, and the carbon isotope composition ranges from -3.1 to 0.8 ‰. Based on these data, the sedimentation interval of these rocks was established. Phosphate accumulation within the Karatau basin occurred in the range of 520-509 million years ago as a result of biogenic precipitation of the phosphorus of ocean water on the shelf of the passive margin of the continent.

Язык оригинала	английский
Страницы (с-по)	267-290
Число страниц	24
Журнал	Vestnik of Saint Petersburg University. Earth Sciences
Том	63
Номер выпуска	3
DOI	https://doi.org/10.21638/spbu07.2018.302
Состояние	Опубликовано - 1 янв. 2018

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title = "Isotopic and geochemical characteristics of Cambrian phosphorites of Karatau Basin (Southern Kazakhstan)",

abstract = " The article is devoted to studying of isotope-geochemical characteristics of phosphorite and the enclosing carbonate Karatau Phosphorus deposit. As a result of the work on the identification of the least altered rocks, the primary isotopic composition of Sr, C and O in the water of the Karatau basin was established, as well as the isotopic composition of Nd phosphorites. Kyrshabakty Formation underlying phosphorite characterized 87 Sr/ 86 Sr ratio 0.70839, δ 13 C value ranges from +0.2 to 0.6 ‰. The primary Sr isotopic composition of the phosphate-bearing Chulaktau Formation, varies from 0.70877 to 0.70905, and the carbon isotope composition ranges from -3.1 to 0.8 ‰. Based on these data, the sedimentation interval of these rocks was established. Phosphate accumulation within the Karatau basin occurred in the range of 520-509 million years ago as a result of biogenic precipitation of the phosphorus of ocean water on the shelf of the passive margin of the continent. ",

keywords = "Chemostratigraphy, Neodymium, Reconstruction of sedimentary basin, Strontium, CHINA, strontium, RECORD, SEAWATER, GORGES, reconstruction of sedimentary basin, chemostratigraphy, neodymium, CHEMOSTRATIGRAPHY, EVOLUTION, AREA, CARBON-ISOTOPE, BOUNDARY, SECTION",

author = "Vishnevskaya, {I. A.} and Malov, {V. I.} and Soloshenko, {N. G.} and Letnikova, {A. F.} and Kiseleva, {V. Yu} and Ivanov, {A. V.}",

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doi = "10.21638/spbu07.2018.302",

language = "English",

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journal = "Vestnik of Saint Petersburg University. Earth Sciences",

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Isotopic and geochemical characteristics of Cambrian phosphorites of Karatau Basin (Southern Kazakhstan). / Vishnevskaya, I. A.; Malov, V. I.; Soloshenko, N. G. и др.

В: Vestnik of Saint Petersburg University. Earth Sciences, Том 63, № 3, 01.01.2018, стр. 267-290.

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

TY - JOUR

T1 - Isotopic and geochemical characteristics of Cambrian phosphorites of Karatau Basin (Southern Kazakhstan)

AU - Vishnevskaya, I. A.

AU - Malov, V. I.

AU - Soloshenko, N. G.

AU - Letnikova, A. F.

AU - Kiseleva, V. Yu

AU - Ivanov, A. V.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The article is devoted to studying of isotope-geochemical characteristics of phosphorite and the enclosing carbonate Karatau Phosphorus deposit. As a result of the work on the identification of the least altered rocks, the primary isotopic composition of Sr, C and O in the water of the Karatau basin was established, as well as the isotopic composition of Nd phosphorites. Kyrshabakty Formation underlying phosphorite characterized 87 Sr/ 86 Sr ratio 0.70839, δ 13 C value ranges from +0.2 to 0.6 ‰. The primary Sr isotopic composition of the phosphate-bearing Chulaktau Formation, varies from 0.70877 to 0.70905, and the carbon isotope composition ranges from -3.1 to 0.8 ‰. Based on these data, the sedimentation interval of these rocks was established. Phosphate accumulation within the Karatau basin occurred in the range of 520-509 million years ago as a result of biogenic precipitation of the phosphorus of ocean water on the shelf of the passive margin of the continent.

AB - The article is devoted to studying of isotope-geochemical characteristics of phosphorite and the enclosing carbonate Karatau Phosphorus deposit. As a result of the work on the identification of the least altered rocks, the primary isotopic composition of Sr, C and O in the water of the Karatau basin was established, as well as the isotopic composition of Nd phosphorites. Kyrshabakty Formation underlying phosphorite characterized 87 Sr/ 86 Sr ratio 0.70839, δ 13 C value ranges from +0.2 to 0.6 ‰. The primary Sr isotopic composition of the phosphate-bearing Chulaktau Formation, varies from 0.70877 to 0.70905, and the carbon isotope composition ranges from -3.1 to 0.8 ‰. Based on these data, the sedimentation interval of these rocks was established. Phosphate accumulation within the Karatau basin occurred in the range of 520-509 million years ago as a result of biogenic precipitation of the phosphorus of ocean water on the shelf of the passive margin of the continent.

KW - Chemostratigraphy

KW - Neodymium

KW - Reconstruction of sedimentary basin

KW - Strontium

KW - CHINA

KW - strontium

KW - RECORD

KW - SEAWATER

KW - GORGES

KW - reconstruction of sedimentary basin

KW - chemostratigraphy

KW - neodymium

KW - CHEMOSTRATIGRAPHY

KW - EVOLUTION

KW - AREA

KW - CARBON-ISOTOPE

KW - BOUNDARY

KW - SECTION

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U2 - 10.21638/spbu07.2018.302

DO - 10.21638/spbu07.2018.302

M3 - Article

AN - SCOPUS:85062190241

VL - 63

SP - 267

EP - 290

JO - Vestnik of Saint Petersburg University. Earth Sciences

JF - Vestnik of Saint Petersburg University. Earth Sciences

SN - 2541-9668

IS - 3

ER -