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Notes on the Upper Ordovician and Lower Silurian of the Tapa District, Estonia

1957; Taylor & Francis; Volume: 79; Issue: 1 Linguagem: Inglês

10.1080/11035895709449110

0016-786X

Jüri Martna,

Space Exploration and Technology

Abstract The Upper Ordovician Saunja (Fia), Vormsi (Fib), Pirgu (Fic), and Porkuni (F2; in this paper included in the Ordovician) stages and the Lower Silurian Juuru (G1) stage are briefly characterized lithologically and faunistically according to the writer's field observations in the Tapa district. A stratigraphic column of the Lower Silurian in central Estonia up to the Adavere (H) stage is republished, somewhat modified, after Elsa Rosenstein (1943). A correlation of the lowermost Silurian between Estonia and Norway is suggested, whereby the supposedly considerable hiatus between the Porkuni and Juuru stages is much diminished.