Notes on a pyritic zone in upper Ancylus sediments from the Bothnian Sea
H. Ignatius, E. Kukkonen, B. Winterhalter
Bulletin of the Geological Society of Finland · 1968
doi:10.17741/bgsf/40.015 (opens in a new tab)
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Abstract
Branchlike aggregates, several millimeters in length, of microscopic pyrite spherules are abundant in a narrow zone in upper Ancylus clay deposited approximately 7 500 yrs B.P. in the southeastern part of the Bothnian Sea. The aggregates in general, and often also the individual pyrite spherules, have crusts of marcasite exhibiting a radial growth pattern.
Abstract licence: CC BY-NC
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