| Autor: |
Currie, K.L., Ferguson, J. |
| Zdroj: |
Tectonophysics; January 1970, Vol. 9 Issue: 6 p525-535, 11p |
| Abstrakt: |
The length to width ratio of magmatic bodies is controlled by their viscosity, rate of intrusion, dimensions and the stress conditions in the host rocks. For bodies less than 10 cm wide the length to width ratio of an ordinary dry magmatic dike cannot exceed 200. If the magma is saturated or supersaturated with water however, boiling off the water during intrusion causes a low viscosity precursor of the magma which greatly facilitates intrusion. This process can be repeated several times. Evidence of the action of this precursor is preserved in the form of non-faulted offsets in the dikes with thin projections of the dike crossing the line of offset. Examples, which are common in water saturated dikes such as lamprophyres, are described and figured. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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