Magnetotelluric constraints on the tectonic evolution beneath the Luotian dome in the North Dabie complex zone, Central China

Yang, Bo; Chen, Yufeng; Han, Bo; Lin, Wule; Hu, Xiangyun; Jiang, Lin

doi:10.1016/j.tecto.2023.229855

Cited by 1 publication

(1 citation statement)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We conducted a dimensionality analysis based on phase tensors (Figure S4 in Supporting Information ), and the results indicate that for most of the stations, especially in the low‐frequency range (>100 s), the skew angles are less than 5°, which suggest that performing a two‐dimensional (2D) inversion is appropriate (Caldwell et al., 2004). Previous studies propose that TM mode data tend to offer greater reliability for 2D interpretation in the context of 3D effects (Ledo et al., 2002; Wannamaker et al., 1984; Yang et al., 2023). The 2D electrical resistivity model (Figure 2d) presented herein is obtained through inversion of TM mode data using the non‐linear conjugate gradient method (Newman & Alumbaugh, 2000).…”

Section: Data and Resultsmentioning

confidence: 99%

Geophysical Evidence of the Collisional Suture Zone in the Prydz Bay, East Antarctica

Fu,

Guo,

Shen

et al. 2024

Geophysical Research Letters

Self Cite

View full text Add to dashboard Cite

The location and origin of Neoproterozoic‐Cambrian sutures provide keys to understand the formation and evolution of the supercontinent Gondwana. The Larsemann Hills is located near a major Neoproterozoic‐Cambrian suture zone in the Prydz Belt, but has not been examined locally by comprehensive geophysical studies. In this study, we analyzed data collected from a one‐dimensional (1D) joint seismic‐MT array deployed during the 36th Chinese National Antarctic Research Expedition. We found that a sharp Moho discontinuity offset of 6–8 km shows up in the stacked image of teleseismic P‐wave receiver function analysis; coinciding with the abrupt Moho offset, a near‐vertical channel with (a) low resistivity extending to the uppermost mantle depths, and (b) high crustal Poisson's ratio in the crust is identified. These findings provide evidence for the determination of the location and collisional nature of the Prydz belt or a portion of it.

show abstract