Conditions for the Formation of Siliceous Rocks of the Lower and Middle Cambrian in the Southeast of the Siberian Platform

被引：1

作者：

Merenkova, S. I. ^{[1
,2
]}

Kalmykov, G. A. ^{[2
]}

Gabdullin, R. R. ^{[2
]}

Karpova, E. V. ^{[2
]}

Puzik, A. Yu. ^{[3
]}

Badianova, I. V. ^{[3
]}

Volkova, M. A. ^{[3
]}

Kazymov, K. P. ^{[3
]}

机构：

[1] Russian Acad Sci, Shirshov Inst Oceanol, Moscow 117997, Russia

[2] Moscow MV Lomonosov State Univ, Moscow 119991, Russia

[3] Perm State Natl Res Univ, Perm 614990, Russia

来源：

MOSCOW UNIVERSITY GEOLOGY BULLETIN | 2023年 / 78卷 / 01期

关键词：

bedded cherts; silica; Cambrian; geochemistry; EDIACARAN DOUSHANTUO FORMATION; INORGANIC GERMANIUM; PACIFIC-OCEAN; GE/SI RATIO; CHERT; GEOCHEMISTRY; SEDIMENTS; NODULES; SILICON; FRACTIONATION;

D O I：

10.3103/S0145875223010155

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

A study of the microstructure and geochemical features of bedded cherts of the Inikan Formation (CYRILLIC CAPITAL LETTER UKRAINIAN IE(1-2)in) from coastal outcrops of the Yudoma River shows that the key role in their formation apparently belongs to siliceous organisms: radiolarians and sponges. The Ge/Si ratio indicates that there is no direct contribution of fluids to the formation of cherts in this part of the paleobasin. The studied chalcedony-quartz rocks were formed of primary biogenic silica that underwent diagenetic redistribution and post-diagenetic processes.

引用

页码：70 / 81

页数：12

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