Late Cenozoic volcanism of Khangai (Central Mongolia): Evidence for recent orogeny in Central Asia

2008 ◽  
Vol 422 (1) ◽  
pp. 1032-1036 ◽  
Author(s):  
V. V. Yarmolyuk ◽  
E. A. Kudryashova ◽  
A. M. Kozlovsky ◽  
V. A. Lebedev
Keyword(s):  
Central Asia ◽  
Late Cenozoic ◽  
Central Mongolia ◽  
Cenozoic Volcanism

scholarly journals Late Cenozoic Uguumur and Bod-Uul Volcanic Centers in Northern Mongolia: Mineralogy, Geochemistry, and Magma Sources

Minerals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 612
Author(s):  
Alexander Perepelov ◽  
Mikhail Kuzmin ◽  
Svetlana Tsypukova ◽  
Yuri Shcherbakov ◽  
Sergey Dril ◽  
...  
Keyword(s):  
Basaltic Magma ◽  
Magma Source ◽  
Depth Range ◽  
Late Cenozoic ◽  
Central Mongolia ◽  
Cenozoic Volcanism ◽  
Northern Mongolia ◽  
Magma Sources ◽  
Response To Stress ◽  
Isotope Systematics

The paper presents new data on mineralogy, geochemistry, and Sr-Nd-Pb isotope systematics of Late Cenozoic eruption products of Uguumur and Bod-Uul volcanoes in the Tesiingol field of Northern Mongolia, with implications for the magma generation conditions, magma sources, and geodynamic causes of volcanism. The lavas and pyroclastics of the two volcanic centers are composed of basanite, phonotephrite, basaltic trachyandesite, and trachyandesite, which enclose spinel and garnet peridotite and garnet-bearing pyroxenite xenoliths; megacrysts of Na-sanidine, Ca-Na pyroxene, ilmenite, and almandine-grossular-pyrope garnets; and carbonate phases. The rocks are enriched in LILE and HFSE, show strongly fractioned REE spectra, and are relatively depleted in U and Th. The low contents of U and Th in Late Cenozoic volcanics from Northern and Central Mongolia represent the composition of a magma source. The presence of carbonate phases in subliquidus minerals and mantle rocks indicates that carbon-bearing fluids were important agents in metasomatism of subcontinental lithospheric mantle. The silicate-carbonate melts were apparently released from eclogitizied slabs during the Paleo-Asian and Mongol-Okhotsk subduction. The parent alkali-basaltic magma may be derived as a result from partial melting of Grt-bearing pyroxenite or eclogite-like material or carobantized peridotite. The sources of alkali-basaltic magmas from the Northern and Central Mongolia plot different isotope trends corresponding to two different provinces. The isotope signatures of megacrysts are similar to those of studied volcanic centers rocks. The P-T conditions inferred for the crystallization of pyroxene and garnet megacrysts correspond to a depth range from the Grt-Sp phase transition to the lower crust. Late Cenozoic volcanism in Northern and Central Mongolia may be a response to stress propagation and gravity instability in the mantle associated with the India-Asia collision.

Sources and geodynamics of the Late Cenozoic volcanism of Central Mongolia: Evidence from isotope-geochemical studies

Petrology ◽  
2010 ◽  
Vol 18 (3) ◽  
pp. 278-307 ◽  
Author(s):  
V. M. Savatenkov ◽  
V. V. Yarmolyuk ◽  
E. A. Kudryashova ◽  
A. M. Kozlovskii
Keyword(s):  
Late Cenozoic ◽  
Central Mongolia ◽  
Cenozoic Volcanism ◽  
Geochemical Studies

Magmatic zoning of Late Cenozoic volcanism in Central Mongolia: Relation with the mantle plume

2010 ◽  
Vol 432 (1) ◽  
pp. 565-569 ◽  
Author(s):  
E. A. Kudryashova ◽  
V. V. Yarmolyuk ◽  
A. M. Kozlovsky ◽  
V. M. Savatenkov
Keyword(s):  
Mantle Plume ◽  
Late Cenozoic ◽  
Central Mongolia ◽  
Cenozoic Volcanism

Late Cenozoic volcanism at the northeastern flank of the South Khangai volcanic region (Central Mongolia): Geochronology and formation conditions

2007 ◽  
Vol 417 (2) ◽  
pp. 1320-1324 ◽  
Author(s):  
V. V. Yarmolyuk ◽  
E. A. Kudryashova ◽  
A. M. Kozlovsky ◽  
V. A. Lebedev ◽  
V. M. Savatenkov
Keyword(s):  
Late Cenozoic ◽  
The South ◽  
Central Mongolia ◽  
Volcanic Region ◽  
Cenozoic Volcanism ◽  
Formation Conditions ◽  
Northeastern Flank

Late Cenozoic volcanism in the Almaludag region, Azerbaijan province, northwest Iran: Evidence for post-collisional extension

2020 ◽  
Vol 141-142 ◽  
pp. 101779
Author(s):  
Morteza Khalatbari Jafari ◽  
Nafiseh Salehi Siavashani ◽  
Hassan A. Babaie ◽  
Wenjiao Xiao ◽  
Mohammad Faridi ◽  
...  
Keyword(s):  
Late Cenozoic ◽  
Cenozoic Volcanism ◽  
Northwest Iran

scholarly journals Cenozoic Volcanism on the Hangai Dome, Central Mongolia: Geochemical Evidence for Changing Melt Sources and Implications for Mechanisms of Melting

2012 ◽  
Vol 53 (9) ◽  
pp. 1913-1942 ◽  
Author(s):  
A. C. Hunt ◽  
I. J. Parkinson ◽  
N. B. W. Harris ◽  
T. L. Barry ◽  
N. W. Rogers ◽  
...  
Keyword(s):  
Central Mongolia ◽  
Geochemical Evidence ◽  
Cenozoic Volcanism

Seismicity and late cenozoic volcanism in parts of Papua-New Guinea

1971 ◽  
Vol 12 (1) ◽  
pp. 15-22 ◽  
Author(s):  
R.W. Johnson ◽  
D.E. Mackenzie ◽  
I.E. Smith
Keyword(s):  
Papua New Guinea ◽  
New Guinea ◽  
Late Cenozoic ◽  
Cenozoic Volcanism
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