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Chronozone

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chronozone [krän·ə‚zōn]
(geology)
A formal time-stratigraphic unit used to specify strata equivalent in time span to a zone in another type of classification, for example, a biostratigraphic zone. Also known as chronostratigraphic zone.
The smallest subdivision of chronostratigraphic units, below stage, composed of rocks formed during a chron of geologic time.
Chronozone 

the zone of the general stratigraphic scale below the stage. A chronozone may be traced in rock strata of different lithological compositions, where the typical complex of fossil organisms may change considerably. It differs from the biostratigraphic zone, whose paleontological features remain constant. The term “chronozone” was introduced in 1961 by the Norwegian geologist G. Henningsmoen. (SeeSTRATIGRAPHY.)
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Most of the supporting data originating from the surroundings of the lake suggest that the water level was ca 6 m lower at the beginning of the Preboreal Chronozone (Mangerud et al.
Ostracod assemblages indicating a low water level episode of Lake ... by Niinemets, Eve; Hang, Tiit / Estonian Journal of Earth Sciences
14]C age were the main reasons why in the 1960s and 1970s the Ancylus transgression was correlated with the Boreal chronozone (Kessel & Punning 1969a; Kessel & Raukas 1979).
Holocene buried organic sediments in Estonia/Holotseensed mattunud ... by Saarse, Leili; Vassiljev, Juri; Miidel, Avo; Niinemets, Eve / Proceedings of the Estonian Academy of Sciences: Geology
The Late Ancylus pedogenesis in the Boreal Chronozone resulted in the formation of Eutric Histosols during about two millennia or even for some hundred years less.
Gleysols on sandy deposits of the Litorina Sea underlain by Histosol ... by Reintam, Loit; Moora, Tanel; Raukas, Anto / Estonian Journal of Earth Sciences
 
 
 
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