. The Quarterly journal of the Geological Society of London. ither the lime-stone had been absorbed by the hot lava, or, more probably, squeezedinto its present shape by the distending and moving spheroidalmasses. There can be no doubt that this limestone is not secondary, dueto the deposition of calcareous material from aqueous solutionsubsequent to the outflow and consolidation of the lava ; nor has itbeen deposited as sediment in irregular spaces between the spheroidsafter the cooling of the basalt; but it is unquestionabhT part of thecalcareous floor upon which the basalt-flow rests. Many
. The Quarterly journal of the Geological Society of London. ither the lime-stone had been absorbed by the hot lava, or, more probably, squeezedinto its present shape by the distending and moving spheroidalmasses. There can be no doubt that this limestone is not secondary, dueto the deposition of calcareous material from aqueous solutionsubsequent to the outflow and consolidation of the lava ; nor has itbeen deposited as sediment in irregular spaces between the spheroidsafter the cooling of the basalt; but it is unquestionabhT part of thecalcareous floor upon which the basalt-flow rests. Many of theseincluded masses are oolitic, the structure being visible sometimes to : Phil. Trans. Roy. Soc. ser. A, vol. cc (1903) pp. 448-49. Vol, 60.] IGNEOUS ROCKS AT SPRING COVE. 165 the naked eye, while a microscopic examination shows the ooliticgrains distinctly, together with the remains of encrinites, etc.; andthe basalt has penetrated, fused, and absorbed the limestone alongits borders. FjV 5.—Junction of the basalt and an included mass of Fig. G.—Included lamp of limestone in basalt.
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectgeology, bookyear1845
