【摘要】 敌布错组为1∶25万措勤区幅区域地质调查首次发现并建立的岩石地层单位。该组角度不整合于下二叠统下拉组之上,盛产冈瓦纳—华夏混合植物群化石,岩性组合呈现灰色复陆屑建造的特点,厚度大于830m。层型剖面位于西藏措勤县江让乡敌布错北缘(E84°46’,N30°51’)。2001年夏经专家实地考查确认,该剖面已完全具备建组条件。此套岩石组合的发现为进一步完善冈底斯构造带古生代地层系统提供了新的资料。更多还原

【Abstract】 The Dibuco Formation is a Permian lithostratigraphic unit found in a regional geo logical survey of the1∶250000Coqên Sheet.This formation,>830m thick,rests unconformably on the Lower Permian Xiala Formation,yielding abundant fossils of the Gondwana-Cathaysia mixed flora.The lithologic associa-tion shows the features of the gray polymictic formation.The stratotype section is located on the northern edge of Dibu Co ,Gyangrang Township,Coqên County,Tibet(lat.30°51’N and long.84°46’E).Field examination by experts in July2001confirmed that this section possesses the conditions for the establish-ment of the formation.更多还原