Ore mineralization causing slope failure in a high-altitude mountain crest—on the collapse of an 8000m peak in Nepal

摘要: Abstract One of the main preparatory causal factors for gigantic Tsergo Ri mass movement (Nepal Himalayas)—the pre-historic failure a mountain crest encompassing today's Yala Peaks I (5520 m), II (5749 m) and III (5820 m)—was sulfidic mineralized ore structure within discordant leucogranitic dike just below these peaks. Geologic mapping landslide deposit with special consideration broken area, structural analysis body its gangue, microscopy, uniaxial compression tests, SEM analyses planes, triaxial tests support this thesis. Geomorphologically detailed reconstruction based on terrain model (scale 1:5000) exact position dislocated confirms assumption that former could have been earth's 15th 8000 m peak in Nepalese Himalayas.