cee cee anh ENee oN a Cae anne amounts of energy reaching the station. fe ee ae The validity of the results is open to question because of the large spread in the values. Average values for four of the shots are as follows: Size of Shot (tons ) Relative Energy 1 5 10 519 15 20 10.24 18.46 A conclusion can be drawn from these figures that the energy reacning a station is roughly proportional to the square of the ratios or shot size. Further analysis of te records will be made. Project 11.3 - Deep Drilling to Base Rocks Tie first drill hole (Station 1130) on Elugelab Island, wes completed in 31 days at a depta of 4,630 ft. encountered at 4,610 ft. Hard basement rock was A core barrel was then run in to obtain a sample of the basement rock. However, at 4,630 ft the core barrel stuck and could not be broken loose. The drill pipe was finally shot off at a dept2 of 3,438 ft and tne hole was abandoned. Seismic logging of the nole to tne depth of tne broken drill pipe is now being accomplished. The very small percentage-of hard rock layers in the coral is notable. A rough field classification of the percentage of different layers drilled in a portion of the hole is given below: - 39 - |