Base-metal and REE anomalies in lower Palaeozoic sedimentary rocks of Amundsen Land, central North Greenland: implications for Zn-Pb potential

Q2 Earth and Planetary Sciences Geological Survey of Denmark and Greenland Bulletin Pub Date : 2018-08-15 DOI:10.34194/geusb.v41.4338
D. Rosa, J. Slack, H. Falck
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Abstract

During the 2013 field season, siliciclastic and carbonate rocks of the lower Palaeozoic sedimentary succession of the Franklinian Basin in Amundsen Land, central North Greenland, were collected for whole-rock geochemical analysis. These data are evaluated here in an attempt to identify possible hydrothermal signatures related to sediment-hosted Zn-Pb mineralisation, similar to that found in correlative strata at the large Citronen Fjord deposit located c. 100 km to the eastnorth-east. In this paper, we use the term Sedex in a broad sense to describe stratiform, sediment-hosted deposits that formed either by syngenetic (exhalative) processes or by subsea-floor replacement coeval with sedimentation (e.g. Emsbo et al. 2016); the term Mississippi Valley-type (MVT) is used for non-stratiform Zn-Pb deposits that formed epigenetically during late diagenesis or tectonism (e.g. Leach et al. 2010).
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北格陵兰中部阿蒙森地下古生代沉积岩中贱金属和稀土元素异常:对Zn-Pb电位的影响
2013年野外季节,对北格陵兰中部Amundsen Land Franklinian盆地下古生代沉积序列的硅屑岩和碳酸盐岩进行了全岩地球化学分析。对这些数据进行评估是为了确定与沉积物中锌-铅矿化有关的可能的热液特征,类似于在位于东北东约100公里处的大型Citronen Fjord矿床的相关地层中发现的特征。在本文中,我们在广义上使用Sedex一词来描述层状、沉积物为主的矿床,这些矿床要么是由同生(呼出)过程形成的,要么是由与沉积同时发生的海底置换形成的(例如Emsbo等人,2016);密西西比河谷型(MVT)一词用于晚期成岩作用或构造作用期间形成的非层状锌- pb矿床(例如Leach等人,2010)。
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来源期刊
CiteScore
2.30
自引率
0.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: GEUS Bulletin publishes geoscience research papers, monographs and map descriptions with a focus on Denmark, Greenland and the wider North Atlantic and Arctic region. We welcome submissions that fit this remit. Specifically, we publish: 1.Short articles intended as rapid communications that are of immediate interest to the international geoscience community (these include new research, datasets, methods or reviews) 2.Regular-length articles that document new research or a review of a topic of interest 3.Monographs (single volume works, by arrangement with the editorial office) 4.Maps and descriptive texts (produced by GEUS for Greenland and Denmark, by arrangement with the editorial office) GEUS Bulletin serves a broad geoscientific readership from research, industry, government agencies, NGOs and special interest groups.
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