摘要
纽芬兰省是加拿大铀矿重要产区之一,铀矿化发育,拉布拉多铀矿化主要分布在Makkovik成矿区中心矿带(CMB)的古元古代变质火山岩和沉积岩内,矿化类型主要为强变形长英质变质火山岩型(Michelin铀矿床)、强变形变质沉积岩型(Kitts铀矿床)、长英质火山岩型(同生)和岩浆热液型(后生);纽芬兰岛矿化主要分布于Deer Lake和Bay St.George盆地的石炭系与早古生代变沉积岩和Hermitage Flexure的变质火山岩之中,成矿潜力最重要的是赋存于砂岩和灰岩中的铀矿化,矿化类型主要有碎屑沉积岩型、火山沉积型和花岗岩型。2009年当地政府以最新的找矿技术为支撑的地质填图项目已经启动,掀起了铀矿勘查热潮,拉布拉多主要勘查方向为Madsen Lake、Sylvia Lake、Anna Lake和Dandy区域,纽芬兰岛主要勘查方向为Deer Lake、St.George Bay、Hermitage Flexure和Dome One区域。
Newfoundland is one of the major uranium production bases in Canada, the uranium mineraliza- tion is well developed. Uranium mineralization distribution of Labrador is in Paleoproterozoic metavolca- nits and sedimentary rocks within the Central Mineral Belt （CMB）. Mineralization types are strongly de- formed felsic metavolcanic rocks （Michelin uranium deposit）, strongly deformed metasedimentary rocks （Kitts uranium deposit）, felsic volcanic rocks（Syngenetic） and magmatic-hydrothermal （epigenetic）. In Newfoundland, uranium mineralization is located in the Carboniferous rocks of the Deer Lake and Bay St. George basins,and early Paleozoic metasedimentary and metavolcanic rocks of the Hermitage Flexure. The major metallogenic potential is uranium mineralization, which is hosted in sandstones and limestones. Min- eralization types are clastic sedimentary rocks, sedimentary volcanogenic and granite. In 2009, the local gov- ernment started the project of geological mapping with the latest prospecting technology, and which set off a uranium exploration boom. The main exploration directions in Labrador are Madsen Lake, Sylvia Lake, Anna Lake and Dandy area. The main exploration directions in Newfoundland are Deer Lake, St. George Bay,Hermitage Flexure and Dome One.
出处
《地质科技情报》
CAS
CSCD
北大核心
2015年第1期160-166,共7页
Geological Science and Technology Information
基金
中国地质调查局项目"全球巨型成矿带区域构造与成矿地质背景对比研究"(1212011120326)
中央地勘基金项目"加拿大东部重要成矿区带成矿规律与资源潜力评价"([2011]D3-09-2)
