Annual report . agglomerate on the northedge of the town, to the north of the Catholic church, Fig. 30. Section A B C on themap, passes over, near both its eastern and western ends, exposures of interbedded conglomerate and slate. Near the middle of section B D is the outcrop, with roundedoutline, of the agglomerate and other rocks. By most observers who have visited the area the limestone conglomerate isconsidered to be a true conglomerate. It consists almost entirely of rounded fragmentsof limestone, some of which are a foot or more in diameter, Figs. 27, 28, 31, 32. A smallpercentage of dar
Annual report . agglomerate on the northedge of the town, to the north of the Catholic church, Fig. 30. Section A B C on themap, passes over, near both its eastern and western ends, exposures of interbedded conglomerate and slate. Near the middle of section B D is the outcrop, with roundedoutline, of the agglomerate and other rocks. By most observers who have visited the area the limestone conglomerate isconsidered to be a true conglomerate. It consists almost entirely of rounded fragmentsof limestone, some of which are a foot or more in diameter, Figs. 27, 28, 31, 32. A smallpercentage of dark slaty substance is present as cement material. Interbedded with the conglomerate are beds of a dark rock which on analysis proves to be slate, the bedsof which are little fractured. If the rock containing limestone fragments is a true con-glomerate, it is one of the most remarkable rocks of the class ever observed. On theother hand, if it is a pseudo-conglomerate, or autoclastic rock, the question arises as to. Hjj. -7. Contact between Madoc andesite and limestone conglomerate. Lot 4, concession B,Madoc township, Hastings county. Contact <s at hammer. why, when the beds of limestone were fractured and the fragments rounded by pressure,the interbedded slate practically escaped fracturing. At one point, near section lineA B, lot 4, in the fifth concession of Madoc township, a bed of sandstone or quartzite,about two feet thick, is interbedded with the limestone conglomerate. By those whoconsider tin- limestone rock to be a true conglomerate, this bed of sandstone is believedto l<nd support to the opinion held by them. If we consider the rock containing the limestone fragments to be a true conglomerate,and to be succeeded in conformable sequence upward by the thin bed of sandstone, inter-bedded slate and conglomerate, together with the great thickness of limestone describedon page 67 we have a section different from any found in other parts of southeasternOntario. Elsewhere
Size: 1730px × 1444px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectminesandmineralresou
