Unconformities (Hiatus) - continued
- 3 Types of Unconformities figure 3.8, p.46
- Angular Unconformity
- Disconformity
- Nonconformity
Wind River Canyon, WY
Grand Canyon, AZ
Principle of Biologic Succession
- geologic range
- range zone
- guide fossil
Fig. 3.30, p. 63
Stratigraphic Units
Lithostratigraphic Units (Rock Units)
- Group - Formation - Member - Bed
- Formation
- lithologically distinct
- has recognizable contacts
- laterally continuous
- mappable
- Biostratigraphic Units
- Chronostratigraphic Units (Time Rock Units)
Table 3.1, p.61
Correlation
- Lithologic Correlation
- Biologic Correlation
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last updated 2-23-01
All original material copyright (c) 1998 by Annabelle Foos. All rights reserved.