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11 Cards in this Set
- Front
- Back
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What is the smallest lithologic unit?
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bed
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What is a subdicision of a formation that is small, but thicker than a bed?
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member
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Term used to describe a lithology from a stratigraphic sense.
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lithosome
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The most basic unit of stratigraphy.
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formation
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A lithologically distinctive mappable lithostratigraphic unit.
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formation
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2 criteria for classification of a formation in the lithostratigraphic sense.
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1. must be mappable
2. must have some geographic extent |
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A stratigraphic unit composed of more than 1 formation.
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Group
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A stratigraphic unit composed of more than one group.
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supergroup
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The reason that some stratigraphic units are classified as groups or supergroups is?
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So that they can be included on a large scale geological map
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A minor time gap (geologically speaking) or break in deposition in a stratigraphic column.
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diastem
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What are three types of contacts found in a stratigraphic column.
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1. Conformable
2. Interstratified (interbedded/intercalacted) 3. Unconformanle (unconformity) |
