448 BOWEX AXD AUROUSSEAU FUSION OF SEDIMENTARY ROCKS 



weight of drill, with speed of rotation, fuses the cores in case the rotation 

 is rapid, and the end of the core (barrel) is very commonly fused, some- 

 times partially fused. The material which is fused has become so com- 

 mon that we now call it corite. It was first found on the coast in drillins^ 

 on salt domes. It is very common to use rotary drilling in fusing. 



An article on core drilling appears in the Monthly Eeview of Oil Fields 

 of California, published by the State of California. 



