Sedimentology, geochemistry and chronology of Jurassic in the Ganzi-Litang ophiolite mélange belt of Xinlong area, Sichuan and its tectonic setting

New Paleomagnetic and Chronological Constraints on the Late Triassic Position of the Eastern Qiangtang Terrane: Implications for the Closure of the Paleo‐Jinshajiang Ocean

“…In the Zhiduo area, mafic rocks as young as ∼234 ± 3 Ma (U‐Pb on zircon) have been reported from the ophiolitic mélange in the suture zone (B. Liu et al., 2016) and the occurrence of ocean island basalts with ages spanning from ∼422 to 236 Ma (U‐Pb on zircon) confirms that the suture represents a major, long‐lived ocean (Liu, Xiao, et al., 2019) prior to ∼234 Ma. To the east of the Zhiduo area, ophiolitic material in the Jinshajiang Suture Zone is mostly of Carboniferous age, but ages as young as ∼294 Ma have been reported (Wang et al., 2000; Zi et al., 2012), whereas to the west of the Zhiduo area, the youngest ages are Triassic: ∼246 ± 5.18 Ma (K‐Ar on diabase; Y. Li et al., 2003) and ∼232 ± 11 Ma (Sm‐Nd isochron from metagabbro; N. Zhang et al., 2012). Collectively, these observations suggest that the Paleo‐Jinshajiang Ocean remained open through the late Paleozoic and into the beginning of the Triassic.…”

Research Progress on the Geomechanical Properties of Block-in-Matrix Rocks

“…Other notable examples include the following: the Ahauser dam breccia in the northern part of the Rheno-Hercynian zone of the Variscan Mountains in Germany [5,6]; the Shale-Limestone Chaotic Complex found in the Santa Barbara open-pit mine in Italy [5][6][7][8][9][10][11]; and the Sille Agglomerate discovered in Koimesis Tes Panagias Church and Sekili hill settlement carved in Turkey [12,13]. China also has extensive occurrences of Bimrock, particularly in several large Bimrock belts on the Tibetan plateau, including the Luhuo-Daofu ophiolite Bimrock belt [14], the Ganzi-Litang accretionary Bimrock belt [15], the Jiali-Palong Zangbu ophiolite Bimrock belt [16], the Jinsha River accretionary complex Bimrock belt [16], the Bangong Lake-Nujiang subduction accretionary complex Bimrock belt [17], the Lancang River accretionary complex Bimrock belt [18], and the Yarlung Zangbo River ophiolite Bimrock belt [19].…”