%0 Journal Article
%T 新生代推覆构造对滇西鹤庆锰矿床的改造与破坏及矿区找矿模型探讨<br>Reconstruction and Destruction of Cenozoic Nappe Structure on Heqing Manganese Deposit in Western Yunnan and Discussion on Ore Prospecting Model
%A 张金学
%A 梁元钊
%A 刘文佳
%J Advances in Geosciences
%P 409-425
%@ 2163-3975
%D 2021
%I Hans Publishing
%R 10.12677/AG.2021.114036
%X 鹤庆锰矿床形成于三叠纪诺利期丽江坳陷带之内的一个次级叠加盆地。笔者从诺利期鹤庆含锰盆地的沉积构造演化、含锰盆地岩相古地理、含矿层岩性划分、及成矿作用特征标志等进行系统梳理，得出其成因认识为受控于同生断裂的火山热水–沉积型矿床锰矿床，并在后期地质演化中经过构造动力变质作用(热液迭加改造)，外加一定程度的风化富集而形成鹤庆式优质富锰矿床。提出NE向盐源–丽江构造带内新生代具有强烈构造岩浆热液活动、动力变质作用及成矿作用，新生代推覆构造形成与深部构造岩浆带联通的后部张性断裂带，对矿床具有重要改造作用，使诺利期沉积锰矿床进一步变质形成优质锰矿。推覆挤压褶皱构造一方面改变地貌(经后期剥蚀背斜成谷向斜成山)对矿床产生破坏，一方面推覆形成大量飞峰对矿床的保存起重要作用。建立了次级叠加诺利期含锰盆地 + 含矿岩系(T<sub>3</sub>sg<sup>2-2</sup>) + 褶皱构造(向斜) + 飞来峰盖层的矿区找矿模型。并提出小天井矿段以南黄峰山–虎门坝–无名山一带即是诺利期深水沉积区，又是中一晚始新世东西向挤压形成的向形区，还是晚渐新世南北向推覆形成的向斜构造区。尤其是无名山向斜轴部“T<sub>2</sub>b飞来峰”之下松桂组地层可作为矿区(采矿权)外围重要找矿远景区。<br />
The Heqing manganese deposit was formed in a secondary superimposed basin within the Triassic Noli Lijiang Depression. Based on the sedimentary tectonic evolution, lithofacies and Palaeogeography, lithologic division of ore-bearing strata, and characteristics of mineralization of the manganese-bearing basin in the Nori period in Heqing County, China, it is concluded that the Genesis of the deposit is a volcanic hydrothermal sedimentary manganese deposit controlled by the syngenetic fault and underwent tectono-dynamic Metamorphism (hydrothermal superimposed transformation) during the later geological evolution, the Heqing Type high-quality manganese-rich deposit is formed by weathering and enrichment to a certain extent. It is suggested that the CENOZOIC in the NE trending yanyuan-lijiang structural belt is characterized by intense tectono-magmatic hydrothermal activity, dynamic metamorphism and mineralization, it has an important reworking effect on the deposit and makes the Nolligian sedimentary manganese deposit further metamorphic to form high-quality manganese ore. On the one hand, the nappe-compression fold structure changes the geomorphology (denudation anticline-valley-syncline-mountain) and destroys the deposit, on the other hand, the NAPPE forming a large number of flying peaks plays an important role in the deposit preservation. The prospecting model of secondary superimposed Noligian manganese-bearing basin + ore-bearing rock series (T<sub>3</sub>sg<sup>2-2</sup>) + fold structure (syncline) + Piraebong cap rock is established. It is pointed out that the area south of the Xiaotianjing ore block is the deep-water Nolligian sedimentary area in the area of Mount fu-ming-wu-ming-shan in Huangfengshan area, and it is also the oriented area formed by the eastward-westward compression of the Middle Eocene, it is also a syncline area formed by late Oligocene ns-trending Nappe. In particular, the strata of the songgui formation below the “T<sub>2</sub>b Piraebong” in the axial part of the Wumingshan syncline can
%K 新生代推覆构造，改造与破坏，找矿模型，外围找矿方向，鹤庆锰矿床<br>Cenozoic Nappe Structure
%K Transformation and Destruction
%K Prospecting Model
%K Peripheral 
Prospecting Direction
%K Heqing Manganese Deposit
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=41627