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Geochrone
| Словарь стратиграфических терминов |
A standard unit o f geologic time (h. s. williams, 1893b, p. 294).
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Polarity-reversal transition-zone, английский
A stratigraphic interval greater than 1 m thick across which a change in magnetic polarity is recorded (north american
Boundary-stratotype, английский
A specific sequence of rock strata in which a specific point is designated that serves as the standard for the definition and recognition of a stratigraphic boundary (see section 4.b.3). c
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