Arid
DOI10.1002/2015TC004027
The crustal structure of south central Mongolia using receiver functions
He, Jing1,2,3; Wu, Qingju1; Sandvol, Eric3; Ni, James4; Gallegos, Andrea4; Gao, Mengtan1; Ulziibat, Munkhuu5; Demberel, Sodnomsambuu5
通讯作者Gao, Mengtan
来源期刊TECTONICS
ISSN0278-7407
EISSN1944-9194
出版年2016
卷号35期号:6页码:1392-1403
英文摘要

The crustal thickness H and average crustal velocity ratio k (Vp/Vs) beneath south central Mongolia are investigated using the H-k stacking method based on teleseismic radial receiver functions. Our primary results reveal that the local crustal thickness varies from 38 to 46 km with an average value of 43 km. Thicker crust is found beneath the western Hentey Mountains, while thinner crust is located in the southern area of the Zuunbayan fault zone. The Bouguer gravity anomalies exhibit a strong correlation with the overall crustal thickness pattern throughout most of our study regime. Moreover, a new approach which integrates the Bouguer anomaly gradient and the receiver function-derived crustal thickness is adopted to calculate the density of the lower crust underneath central Mongolia. Fairly dense lower crust of approximately 3000 kg/m(3) is found in the Middle Gobi Desert. The measured crustal Vp/Vs ratio ranges from 1.68 to 1.83 with an average value of 1.74. Low Vp/Vs ratio is found beneath the western Hentey Mountains. In general, low Vp/Vs ratios correlate well with regions of quartz-rich crust and high heat flow. High Vp/Vs ratios occur in the Middle Gobi volcanic regions and the Mesozoic Southern Gobi Basin.


类型Article
语种英语
国家Peoples R China ; USA ; Mongolia
收录类别SCI-E
WOS记录号WOS:000381910200004
WOS关键词BAIKAL RIFT-ZONE ; SPINEL PERIDOTITE XENOLITHS ; UPPER-MANTLE BENEATH ; ASIAN OROGENIC BELT ; TECTONIC EVOLUTION ; VELOCITY STRUCTURE ; INNER-MONGOLIA ; CONTINENTAL-CRUST ; POISSON RATIO ; OKHOTSK OCEAN
WOS类目Geochemistry & Geophysics
WOS研究方向Geochemistry & Geophysics
来源机构New Mexico State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/196634
作者单位1.China Earthquake Adm, Inst Geophys, Key Lab Seism Observat & Geophys Imaging, Beijing, Peoples R China;
2.China Earthquake Adm, Inst Crustal Dynam, Beijing, Peoples R China;
3.Univ Missouri, Dept Geol Sci, Columbia, MO USA;
4.New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA;
5.Mongolian Acad Sci, Res Ctr Astron & Geophys, Seismol Dept, Ulaanbaatar, Mongolia
推荐引用方式
GB/T 7714
He, Jing,Wu, Qingju,Sandvol, Eric,et al. The crustal structure of south central Mongolia using receiver functions[J]. New Mexico State University,2016,35(6):1392-1403.
APA He, Jing.,Wu, Qingju.,Sandvol, Eric.,Ni, James.,Gallegos, Andrea.,...&Demberel, Sodnomsambuu.(2016).The crustal structure of south central Mongolia using receiver functions.TECTONICS,35(6),1392-1403.
MLA He, Jing,et al."The crustal structure of south central Mongolia using receiver functions".TECTONICS 35.6(2016):1392-1403.
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