班公湖——怒江成矿带中、西段岩浆弧新认识及其对找矿的启示

笔者将班公湖—怒江成矿带中、西段初步划分为唐古拉、南羌塘、班公湖—怒江结合带和昂龙岗日—班戈4个成矿亚带,包括8个主要成矿远景区。该成矿带在近年来地质矿产调查和研究的主要进展包括对岩浆弧成矿地质特征的认识和以此为基础的找矿突破。尽管南羌塘南缘的扎普—多不杂岩浆弧未出露广泛的、连续的岩浆岩带,但本带的多不杂—青草山和材玛—弗野2个成矿远景区在近年来的找矿工作中取得重大进展,在已查明多龙超大型铜矿之后,又连续发现青草山、龙荣、巴工、弗野等一系列矿床和矿点。在昂龙岗日—班戈岩浆弧的4个主要成矿远景区中,已查明尕尔穷和嘎拉勒2个大型金铜矿,并又发现亚卓、雄梅、舍索、苦嘎、长给、补嘎错等多个矿床和矿点。班公湖—怒江成矿带中、西段已展现巨大的找矿潜力,但仍必须深入研究相关的重大地质问题。

New Understanding in the Middle and West Part of Bangong Lake-Nujiang River Metallogenic Belt and Its lmplication for Prospecting

The middle and west part of the Bangong Lake-Nujiang River metallogenic belt is divided in 4 subzones including Tanggula, southern Qiangtang, Bangong Lake-Nujiang River suture and Aanglonggangri-Bangor subzones, which contains 8 major mineralization prospects. The major achievements from recent years’ geological survey on this belt are the understanding of arc-related metallogenesis and ore prospecting progress based on this understanding. Although the Zhapu-Duobuza magmatic arc in the southern margin of the Qiangtang subzone is not a widespread and continuous magmatic belt, significant exploration progress has been made in the Duobuza-Qingcaoshan and Caima-Fuye prospects. A series of mineral deposits and occurrences have been spotted after identifying the Duolong super-large copper deposit, such as Qingcaoshan, Longrong, Bagong and Fuye. In these 4 prospects of the Aanglonggangri-Bangor magmatic arc, besides the identified Gaerqiong and Galale large gold and copper deposits, more mineral deposits and occurrences have been found in Yazhuo, Xiongmei, Shesuo, Kuga, Changgei, etc. The middle and west part of the Bangong Lake-Nujiang River metallogenic belt has shown a great prospecting potential, but there are relevant major geological problems to be solved.