Transactions and proceedings of the New Zealand Institute . Kiln Point: Face exposed behind old kiin. B. Limestone. A. Phosphate rock. The phosphate fills the pockets and rises above the levelof the dividing-ridge of limestone to a height varying from 3 10 ft., the greatest depth occurring at the north-east end ofthe section. The phosphate rock exposed in the face of the opencutting is much broken and crushed, and sometimes showsslickenside surfaces. It is yellowish-brown in colour, withirregular seams and patches of whitish-grey. The presenceof sand renders it soft and friable, and of l
Transactions and proceedings of the New Zealand Institute . Kiln Point: Face exposed behind old kiin. B. Limestone. A. Phosphate rock. The phosphate fills the pockets and rises above the levelof the dividing-ridge of limestone to a height varying from 3 10 ft., the greatest depth occurring at the north-east end ofthe section. The phosphate rock exposed in the face of the opencutting is much broken and crushed, and sometimes showsslickenside surfaces. It is yellowish-brown in colour, withirregular seams and patches of whitish-grey. The presenceof sand renders it soft and friable, and of lower grade thanthat exposed at Discovery Point. At the most easterly point of the open cut masses offairly pure phosphate rock contain inclusions of basalt, occur-ring in small angular or nodular fragments which are seldomover 4 in. in diameter. In a deep narrow trench above theopen cutting the phosphate is mixed with glauconitic green-sands which are said to be highly phosphatic. Section ^^D, Kiln Point. A. Phosphatic greensands. 3. Phosphate rock. C. Lime-stone. D. Glauconitic greensands. The rock-phosphate has been exposed by a long trenchsome 12 chains north of Kiln Point, but no feature of specialinterest is disclosed in this direction. At Millburn lime-quarry the surface of the Eocene lime- Park.—The Bock-phosphates of Otago. 399 stone presents the most marked irregularity. Under theinfluence of both chemical and physical erosion it has beenformed into wide basins and deep well-like holes, surmountedby overhanging knobs and spires of limestone. The basinsare filled with yellowish-brown sands, as shown in Sec-tion III. below. Section III.
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