Geochemical evolution of the early Paleozoic collisional magmatism from autochthonous migmatites and granitoids to multiphase granite intrusions (Sharanur and Aya complexes, Baikal Region)

2018 ◽  
Vol 59 (12) ◽  
pp. 1616-1625 ◽  
Author(s):  
V.S. Antipin ◽  
L.V. Kushch ◽  
N.V. Sheptyakova ◽  
A.G. Vladimirov
Keyword(s):  
Baikal Region ◽  
Geochemical Evolution ◽  
Early Paleozoic

The Olkhon metamorphic terrane in the Baikal region: An Early Paleozoic collage of Neoproterozoic active margin fragments

2010 ◽  
Vol 51 (5) ◽  
pp. 447-460 ◽  
Author(s):  
D.P. Gladkochub ◽  
T.V. Donskaya ◽  
V.S. Fedorovsky ◽  
A.M. Mazukabzov ◽  
A.N. Larionov ◽  
...  
Keyword(s):  
Baikal Region ◽  
Early Paleozoic ◽  
Active Margin ◽  
Metamorphic Terrane

Strike-slip tectonics and subalkaline mafic magmatism in the Early Paleozoic collisional system of the western Baikal region

2010 ◽  
Vol 51 (5) ◽  
pp. 534-547 ◽  
Author(s):  
V.S. Fedorovsky ◽  
E.V. Sklyarov ◽  
A.E. Izokh ◽  
A.B. Kotov ◽  
A.V. Lavrenchuk ◽  
...  
Keyword(s):  
Baikal Region ◽  
Strike Slip ◽  
Early Paleozoic ◽  
Mafic Magmatism

Variations in Surface Textures of Quartz Sand using Electron Microscopy

1970 ◽  
Vol 28 ◽  
pp. 494-495
Author(s):  
Eugene J. Amaral
Keyword(s):  
Electron Microscopy ◽  
Glass Industry ◽  
Glass Slide ◽  
Distilled Water ◽  
Early Paleozoic ◽  
Secondary Effects ◽  
Surface Textures ◽  
High Silica ◽  
Sand Deposit ◽  
The U.S

Examination of sand grain surfaces from early Paleozoic sandstones by electron microscopy reveals a variety of secondary effects caused by rock-forming processes after final deposition of the sand. Detailed studies were conducted on both coarse (≥0.71mm) and fine (=0.25mm) fractions of St. Peter Sandstone, a widespread sand deposit underlying much of the U.S. Central Interior and used in the glass industry because of its remarkably high silica purity.The very friable sandstone was disaggregated and sieved to obtain the two size fractions, and then cleaned by boiling in HCl to remove any iron impurities and rinsed in distilled water. The sand grains were then partially embedded by sprinkling them onto a glass slide coated with a thin tacky layer of latex. Direct platinum shadowed carbon replicas were made of the exposed sand grain surfaces, and were separated by dissolution of the silica in HF acid.

The Elachistidae of southern Siberia and Central Asia, with descriptions of five new species (Lepidoptera)¹

1992 ◽  
Vol 3 (4) ◽  
pp. 177-194 ◽  
Author(s):  
Lauri Kaila
Keyword(s):  
New Species ◽  
Central Asia ◽  
Baikal Region ◽  
Tianshan Mountains ◽  
Previous Literature ◽  
Altai Mountains ◽  
Southern Siberia

The Elachistidae material collected during the joint Soviet-Finnish entomological expeditions to the Altai mountains, Baikal region and Tianshan mountains of the previous USSR is listed. Previous literature dealing with the Elachistidae in Central Asia is reviewed. A total of 40 species are dealt with, including descriptions of five new species: Stephensia jalmarella sp. n. (Altai), Elachista baikalica sp. n. (Baikal), E. talgarella sp. n. (southern Kazakhstan), E. esmeralda sp. n. (southern Kazakhstan) and E. filicornella sp. n. (southern Kazakhstan). The previously unknown females of E. bimaculata Parenti, 1981 and Biselachista zonulae Sruoga, 1992 are described.

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