Mineralogy, geochemistry and genesis of the ferromanganese ores from Hazara area, NW Himalayas, northern Pakistan

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• 作者：Shah ; Mohammad Tahir ; Moon ; Charles J.
• 关键词：Hazara ; Ferromanganese ores ; Geochemistry ; Pakistan
• 刊名：Journal of Asian Earth Sciences
• 出版年：2004
• 出版时间：March, 2004
• 年：2004
• 卷：23
• 期：1
• 页码：1-15
• 全文大小：384 K

文摘

Ferromanganese ores occur in Hazara area near Abbottabad within the Hazira Formation of the Kalachitta-Margala thrust belt of the NW Himalayas of the Indo-Pakistan plate in Pakistan. The Hazira formation of Cambrian age is a relatively thin unit (up to 150 m thick), which consists of either thin ferruginous siltstone, with variable amounts of clay, shale, ferromanganese ores, phosphorite and barite, or thicker, evenly bedded, reddish-brown siltstone. It has a conformable lower contact with the Abbottabad Formation (Cambrian) and an unconformable upper contact with the Samana Suk limestone (Jurassic).