On the position of the Variscan Front in southern New Brunswick and its relation to Precambrian basement: Discussion
"The 'basic Coldbrook' consists principally of sub-vertical, schistose, mafic dikes, rather than volcanic rocks. . . . The intrusive character of the amphibolitic rocks can still be recognized by the presence of chilled margins on both sides of the dike. . . . Very deformed examples of 'basic Coldbrook' along the Bellisle [sic] fault were mistaken by Garnett (1973) for basic pyroclastic rocks, even though he recognized and drew attention to the extensive cataclastic deformation of the Coldbrook Group as a whole."