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通过1∶250000邦多区幅和措麦区幅区域地质调查,对西藏文部—姆错丙尼地区的早二叠世拉嘎组进行了地层古生物及杂砾岩特征的研究,发现赋存于滑塌块体中的生物化石反映的地质时期为早二叠世Sakmarian—Artinskian期,而滑塌块体的“基质”地层时代应稍晚于早二叠世Sakmarian—Artinskian期;沉积特征表明杂砾岩成因具冰海相和水下块体重力流的复合(双重)性质。
Based on the geological survey of 1: 250000Bondo area and measure area, the characteristics of the stratigraphic palaeontology and conglomerate rocks were studied in the Early Permian Raga Formation in the Manchuang-Mokuniani area of Tibet, The biological fossils in the slump mass reflect the Early Permian Sakmarian-Artinskian period, while the “matrix” stratigraphic age of the slump mass should be slightly later than that of the Early Permian Sakmarian-Artinskian period. The sedimentary characteristics indicate that the complex The conglomerate (dual) nature of the conglomerate causes the gravity flow of ice and underwater blocks.