Magnitude of completeness, b-value, and spatial correlation dimension of earthquakes in the South Baikal Basin, Baikal Rift System

2019 ◽  
Vol 759 ◽  
pp. 44-57 ◽  
Author(s):  
Natalia A. Radziminovich ◽  
Andrey I. Miroshnichenko ◽  
Fyodor L. Zuev
Keyword(s):  
Spatial Correlation ◽  
Correlation Dimension ◽  
B Value ◽  
Rift System ◽  
The South ◽  
Magnitude Of Completeness ◽  
Baikal Basin ◽  
Baikal Rift System ◽  
South Baikal

Volcanic rocks and pseudotachylytes from sources of crust-mantle complementary layers: Insight into geodynamics of the Baikal Rift System, Southern Siberia

2021 ◽  
Author(s):  
Irina Chuvashova ◽  
Sergei Rasskazov ◽  
Tatiana Yasnygina ◽  
Youseph Ailow ◽  
Elena Saranina ◽  
...  
Keyword(s):  
Volcanic Rocks ◽  
Rift System ◽  
The South ◽  
Geological Evidence ◽  
Southern Siberia ◽  
Baikal Basin ◽  
Baikal Rift System ◽  
Geochemical Study ◽  
Basin Area ◽  
South Baikal

<p>We present results of detail geochemical study of 18–12 Ma volcanic rocks from the Kamar-Stanovoy Zone of Hot Transtension (KSZHT), located in the central Baikal Rift System (BRS), and older pseudotachylytes from the Main Sayan Fault (MSF). These rocks designate geochemically distinguished from the OIB sources that are referred to the Slyudyanka zone of paleocollision occurred between the Khamardaban terrane and Siberian paleocontinent about 488 Ma ago. We define crustal and mantle signatures (with and without garnet, respectively) for the KSZHT volcanic rocks and crustal ones for the MSF basic pseudotachylytes. The signatures are indicative for tracing complementary relations between layers of the crust–mantle transition (CMT). We infer that the KSZHT volcanic activities accompanied rifting of a paleocontinental margin but got quiescent after a structural separation of the South Baikal Basin from the Tunka Valley, when the former had been sufficiently extended and subsided in contrast to the latter, which had been notably compressed and uplifted. From geological evidence and a detail seismic tomography model, we suggest that the KSZHT crust–mantle magmatic processes were due to delamination of a thickened root part of the South Baikal Orogen that preceded rifting in the South Baikal Basin area in the Late Cretaceous and Paleogene. Volcanic rocks of the past 17 Ma from the southwestern BRS denoted similar CMT sources and delamination processes beneath the East Hangay orogen and adjacent Orkhon-Selenga saddle. In the central and southwestern BRS, the CMT sources marked mutually overlapping deformational fields related to Indo-Asian convergence and pool-to-axis forces of the Japan-Baikal geodynamic corridor.</p><p>This work is supported by the RSF grant 18-77-10027.</p>

Contemporary horizontal movements and seismicity of the south Baikal Basin (Baikal rift system)

2014 ◽  
Vol 50 (6) ◽  
pp. 785-794 ◽  
Author(s):  
V. A. Sankov ◽  
A. V. Lukhnev ◽  
A. I. Miroshnitchenko ◽  
A. A. Dobrynina ◽  
S. V. Ashurkov ◽  
...  
Keyword(s):  
Rift System ◽  
The South ◽  
Baikal Basin ◽  
Baikal Rift System ◽  
South Baikal

MAGNETOELASTIC MODEL OF THE EARTH’S CRUST FOR THE WESTERN TERMINATION OF THE SOUTH BAIKAL BASIN

2017 ◽  
Vol S36 ◽  
pp. 3-10
Author(s):  
P. G. Dyadkov ◽  
◽  
L. V. Tsibizov ◽  
M. P. Kozlova ◽  
A. V. Levicheva ◽  
...  
Keyword(s):  
Earth’S Crust ◽  
The South ◽  
Baikal Basin ◽  
Earth's Crust ◽  
South Baikal

scholarly journals The Kultuk Volcano: spatial-temporal change of magmatic sources at the western terminus of the South Baikal basin between 18 and 12 Ma

2013 ◽  
Vol 4 (2) ◽  
pp. 135-168 ◽  
Author(s):  
S.V. Rasskazov ◽  
T.A. Yasnygina ◽  
I.S. Chuvashova ◽  
E.A. Mikheeva ◽  
S.V. Snopkov
Keyword(s):  
Temporal Change ◽  
The South ◽  
Baikal Basin ◽  
South Baikal

scholarly journals Atmospheric Processes in the South Baikal Basin and Their Role in Relief Formation

Atmosphere ◽  
2018 ◽  
Vol 9 (5) ◽  
pp. 176 ◽  
Author(s):  
Elizaveta М. Tyumentseva ◽  
Galina F. Orel
Keyword(s):  
The South ◽  
Atmospheric Processes ◽  
Baikal Basin ◽  
Relief Formation ◽  
South Baikal

scholarly journals SPATIAL VARIATIONS OF SEISMIC WAVE ATTENUATION IN THE SOUTH BAIKAL BASIN AND ADJACENT AREAS (BAIKAL RIFT)

2019 ◽  
Vol 10 (1) ◽  
pp. 147-166
Author(s):  
A. A. Dobrynina ◽  
P. A. Predein ◽  
V. A. Sankov ◽  
Ts. A. Tubanov ◽  
D. P.-D. Sanzhieva ◽  
...  
Keyword(s):  
Seismic Wave ◽  
Upper Mantle ◽  
Wave Attenuation ◽  
The South ◽  
Crust And Upper Mantle ◽  
Seismic Wave Attenuation ◽  
Baikal Basin ◽  
Intrinsic Attenuation ◽  
Total Attenuation ◽  
South Baikal

Our detailed study of the crust and upper mantle of the South Baikal basin focused on seismic coda and seismic S-waves attenuation and estimated seismic quality factor (QS and QC), frequency parameter (n), attenuation coefficient (δ), total attenuation (QT), and the ratio of two components the total attenuation: intrinsic attenuation (Qi), and attenuation due to scattering caused by the inhomogeneities of the medium (QSC). We calculated the sizes of inhomogeneities revealed in the block medium, which put their effect on the attenuation of seismic waves in different frequency ranges. The seismic wave attenuation field was analyzed in comparison with the geological and geophysical characteristics of the medium, and a direct relationship was established between attenuation, composition and active processes in the crust and upper mantle of the studied area. According to the estimated intrinsic attenuation (Qi) and scattering attenuation (QSC) contributions into the total attenuation, intrinsic attenuation is generally dominant in the studied area, while the QSC component increases in the areas of large active faults.

Responses of a 234U/238U activity ratio in groundwater to earthquakes in the South Baikal Basin, Siberia

2020 ◽  
Author(s):  
Sergei Rasskazov ◽  
Aigul Ilyasova ◽  
Sergei Bornyakov ◽  
Irina Chuvashova ◽  
Eugene Chebykin
Keyword(s):  
Activity Ratio ◽  
The South ◽  
Baikal Basin ◽  
238U Activity ◽  
South Baikal
Sign in / Sign up

Export Citation Format

Share Document