贵州松桃新元古代大塘坡期锰矿热水沉积构造特征  

The Structure Character of Manganese Ore Deposit of Datangpo-period of Neoproterozoic in Songtao of Guizhou

作　　者：何志威[1,2] 杨瑞东[1] 高军波[1] 程伟[1] 温官国[2] 

机构地区：[1]贵州大学资源与环境工程学院,贵州贵阳550025 [2]贵州省地质矿产勘查开发局103地质大队,贵州铜仁554300

出　　处：《中国锰业》2013年第3期5-8,16,共5页China Manganese Industry

基　　金：贵州大学研究生创新基金(研理工2013058);教育部博士点基金(20105201110002);贵州省省长基金(2009179)

摘　　要：随着锰矿整装勘查及研究程度的深入,贵州松桃新元古代大塘坡期锰矿逐渐受到重视,并成为我国重要的锰矿基地之一。通过对松桃盆地各矿区锰矿石的沉积构造特征进行研究,发现松桃锰矿既有代表热水喷流沉积的角砾构造、网脉构造、块状构造等,又有反映热水与海水混合沉积的条带(纹)构造,同时存在成岩期同生变形构造:薄膜构造、破裂构造等。此外,该区锰矿具有独特的特征:矿体往往表现为"透镜体"状和上部为层状、下部为角砾、脉状的"二元式"结构。认为贵州松桃锰矿是由2套成矿方式(热水喷流单一成矿方式及热水与海水混合成矿方式)构成的具有完整热水沉积旋回的热水喷流—沉积类型锰矿区。With bulk exploration and deep of research level for manganese deposit, the manganese deposit of Datangpo Period of Neoproterozoic in Guizhou gradually is seriously taken, and it has become one of the important super large bases of manganese deposit in China. In this paper, a study of sedimentary structures characteristic for the manganese ore of Manganese Basin in Songtao has found Songtao manganese in representatives hydrothermal spray flow of sedimentary breccia structure, including stockwork structure, lump structure, in existence of bands （pattern） structure reflecting the deposition of hydrothermal mixed with seawater. Besides, there exists the diagenetic stage syngenetic deformation structure： film structure, rupture structure, in addition, the manganese ore also has its own unique characteristics, such as ＂Lenticles＂ and ＂two-end structure＂ （stratifoIm body located in upper part and vein in lower part）. Songtao Manganese deposit is hydrothermal jet-sedimentary type, constituted by two sets of metallogenic way （hydrothermal jet single metallogenic way and hydrothermal and seawater mixed metallogenic way） for a complete hydrothermal depositional cycles.

关 键 词：锰矿 结构构造 热水喷流-沉积 新元古代 

分 类 号：P611[天文地球—矿床学] P583[天文地球—地质学]