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f Relationship between Natural Radioactivity and Magnetic Properties of Ordovician Carbonate Rocks in Estonia
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 57th EAGE Conference and Exhibition, May 1995, cp-90-00556
- ISBN: 978-90-73781-06-1
Abstract
The Ordovician sedimentary basin in Estonia is composed of alternating thin layers of argillaceous to a different degree carbonate rocks. The total thickness of Ordovician rocks is about 50-200 metres. Middle Ordovician rocks include the commercial seam of oil shale (kukersites), the early Ordovician layers include the commercial seam of shelly phosphorites.