𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On an unmetamorphosed iron-formation in the early precambrian of South-West Greenland

✍ Scribed by P. U. Appel

Book ID
104662159
Publisher
Springer
Year
1974
Tongue
English
Weight
722 KB
Volume
9
Category
Article
ISSN
0026-4598

No coin nor oath required. For personal study only.

✦ Synopsis

During Renzy Mines Ltd. exploration programme in 1972, an iron-formation was found in the Midternaes area north east of Ivigtut, South-West Greenland. It contains up to 32.9 % Fe. The dominant mineral is greenalite, with minor amounts of magnetite, siderite and quartz. It was found in the northernmost part of the Ketilidian supracrustals (? 1800 m.y.), which are non-metamorphosed or very weakly metamorphosed. The iron-formation is suggested to be of submarine-exhalative origin, and precipitated in a moderately deep sea at low atmospheric 02 pressure.

πŸ“œ SIMILAR VOLUMES

An unusual diagenetic structure in the P
An unusual diagenetic structure in the Precambrian banded iron formation (BIF) of Orissa, India, and its interpretation
✍ K. L. Chakraborty; T. Majumder πŸ“‚ Article πŸ“… 1992 πŸ› Springer 🌐 English βš– 716 KB

An unusual type of late diagenetic tectonic and compaction structure simulating boudinage phenomena is described and documented from the Precambrian banded iron formation (BIF) of Orissa, India. The structure was seemingly initiated by the development of tension cracks in the hydroplastic stage foll