Determination of the absolute depths of the mantle transition zone discontinuities beneath China: Effect of stagnant slabs on transition zone discontinuities
نویسندگان
چکیده
منابع مشابه
Mantle transition zone discontinuities beneath the contiguous United States
Using over 310,000 high-quality radial receiver functions recorded by the USArray and other seismic stations in the contiguous United States, the depths of the 410 km and 660 km discontinuities (d410 and d660) are mapped in over 1,000 consecutive overlapping circles with a radius of 1◦. The average mantle transition zone (MTZ) thickness for both the western and central/eastern U.S. is within 3 ...
متن کاملSeismic imaging of mantle transition zone discontinuities beneath the northern Red Sea and adjacent areas
S U M M A R Y The dramatic asymmetry in terms of surface elevation, Cenozoic volcanisms and earthquake activity across the Red Sea is an enigmatic issue in global tectonics, partially due to the unavailability of broad-band seismic data on the African Plate adjacent to the Red Sea. Here, we report the first comprehensive image of the mantle transition zone (MTZ) discontinuities using data from ...
متن کاملMantle transition zone discontinuities beneath the Baikal rift and adjacent areas
[1] Like most other major continental rifts, the Baikal rift zone (BRZ) in Siberia is presumably underlain by a hot and partially molten mantle, which has a reduced seismic velocity relative to surrounding areas. Recent seismic tomography studies, however, gave conflicting results about the depth extent and even the existence of the low-velocity anomaly beneath the BRZ, suggesting that addition...
متن کاملMantle transition zone discontinuities beneath 3 the Baikal rift and adjacent areas
6 [1] Like most other major continental rifts, the Baikal rift zone (BRZ) in Siberia is 7 presumably underlain by a hot and partially molten mantle, which has a reduced seismic 8 velocity relative to surrounding areas. Recent seismic tomography studies, however, gave 9 conflicting results about the depth extent and even the existence of the low-velocity 10 anomaly beneath the BRZ, suggesting th...
متن کاملA Sporadic Low-Velocity Layer Atop the Western Us Mantle Transition Zone and Short-Wavelength Variations in Transition Zone Discontinuities
[1] Teleseismic receiver function analysis of data from six dense arrays in the western U.S. is used to inves tigate mantle transition zone (MTZ) discontinuities and the prevalence of a low‐velocity layer atop the 410 km discontinuity (410‐LVL). Negative polarity Ps arrivals indicative of a low‐velocity layer with a top 25–60 km above the 410 are identified in 8–11 out of 18 stacks of receiver...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Earth, Planets and Space
سال: 1998
ISSN: 1880-5981
DOI: 10.1186/bf03352191