MOORE ABNORMAL SECONDARY DEPOSITS. 489 



with traces of galena. North of this another vein leads down about a 

 foot in thickness, almost wholly filled with sulphate of barytes. There 

 are no organic remains to test the age of either of the above. The 

 northern end of the quarry, like the south, is bounded by a dyke of 

 considerable thickness, the sides of which are composed of vertical 

 seams or beds of limestone, within which are cavities with crystal- 

 line carbonate of lime, barytes, or patches of ferruginous sand, with 

 occasional evidences of galena. The sides of this fissure aiford traces 

 of organic remains ; and there is no doubt it is contemporary with those 

 at Holwell, and of Liassic age. The surface of the Carboniferous 

 Limestone above this vein is covered for a short distance with stra- 

 tified Inferior Oolite. 



Eollowing the valley to the north, the sides are now clothed with 

 wood for a considerable distance, and no doubt cover up interesting 

 physical phenomena. Towards Hapsford the first quarry reached is 

 again bounded by a vertical Liassic infilling, 2 feet in thickness, 

 following which the Carboniferous Limestones are much contorted. 

 From an examination of the beds above the limestone, I have evi- 

 dence of the presence of horizontal deposits of Rhsetic age. A thin 

 bed of a waterworn pebbly conglomerate, which will be found con- 

 tinuous and of greater thickness in succeeding sections, makes its 

 appearance, resting for a short distance immediately on the Carboni- 

 ferous Limestone. In the southern corner this gives place to an 

 altered limestone, which, though scarcely distinguishable from the 

 Carboniferous Limestone, is probably Liassic. In a trough which 

 reaches down to the Rhaetic deposit, encroaching also on the Lias, 

 and partly covering it, we then have regularly stratified beds of In- 

 ferior Oolite, 8 feet in thickness On examining the face of the lime- 

 stone below these unconformable beds, we find, a few yards from the 

 first vein at the south, several smaller veins of only two or three 

 inches each in thickness, composed at the sides of a light-yellow 

 stone, with veins of spar within, affording a well-marked distinction 

 from the darker Carboniferous Limestone. These are followed, about 

 seven feet beyond, by a vein of 6 inches, which passing upwards 

 meets the former under the Lias, and may therefore be referred to 

 that age. Pifteen feet of limestone succeed, and then a series of 

 ferruginous -looking disturbed fissures, 2 feet ; next, limestone, 27 

 feet, and then a small vein of vertically laminated yellow limestone ; 

 Carboniferous Limestone, 24 feet, divided by a small vein with 

 pockets of haematite iron ore ; limestone, 90 ft., on the top of which 

 rests Rhsetic conglomerate, and then a contorted vein of 18 in,, 

 v^^hich passes upwards and meets the base of the conglomerate. 



An unopened piece of ground of 80 feet leads to another opening, 

 in which the extraordinary variety presented by these sections is 

 again manifested. The quarrymen appear to cease their w^ork- 

 ings on meeting the unprofitable material composing the fissures 

 when they are of any thickness ; and here once more the quarry 

 is bounded on the south by a vein, 4 ft,, composed entirely of 

 carbonate of lime, which is seen to pass upwards through the 

 Rhtetic beds, and meets the base of the Inferior Oolite, and 



