Melanges through time: Life cycle of the world's largest Archean melange compared with Mesozoic and Paleozoic subduction-accretion-collision melanges

Date

2020-10-01

Author

Kusky, Timothy
Wang, Junpeng
Wang, Lu
Huang, Bo
Ning, Wenbin
Fu, Dong
Peng, Hongtao
Deng, Hao
Polat, Ali
Zhong, Yating
Shi, Guanzhong

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Melanges represent a significant component of collisional and accretionary orogenic belts. We present a comparison of subduction-accretion melanges of different ages to test how melange-forming processes at convergent margins changed through time. We describe the Mesozoic McHugh melange in Alaska, and the Paleozoic Proto-Tethyan Laohushan melange of the Qilian Orogenic Belt of the Alpine-Himalayan chain, together with documentation of a Neoarchean melange that marks the suture between the Eastern Block and Central Orogenic Belt of the North China Craton (NCC). The McHugh is a classic accretionary melange that has not yet experienced a collision, and the Laohushan is an accretionary/collisional melange with structures related to both stages of its evolution. We compare the characteristics of these melanges with the world's largest Archean melange, the newly-documented circa 2.5 Ga 1600 km long Jianping-Zunhua-Zanhuang-Dengfeng (JZZD) melange of the North China Craton.

Subject Keywords

General Earth and Planetary Sciences

URI

https://hdl.handle.net/11511/68562

Journal

EARTH-SCIENCE REVIEWS

DOI

https://doi.org/10.1016/j.earscirev.2020.103303

Collections

Department of Geological Engineering, Article

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Citation Formats

T. Kusky et al., “Melanges through time: Life cycle of the world’s largest Archean melange compared with Mesozoic and Paleozoic subduction-accretion-collision melanges,” EARTH-SCIENCE REVIEWS, pp. 0–0, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/68562.