Plates and Maps (1817)
“ Shews the veins of granite passing into the schist in the Mourne Mountains. The upper, or lighter tinted part represents a portion of the granite which forms the summit of the mountain, the lower dark part the schist, into which the veins of granite run. At the mouths of the veins are sometimes seen small insulated pieces of the schist. ”
Plates and Maps (1817)
“ Porphyritic veins traversing the schist of St. Agnes in Cornwall, described in the Rev. J. J. Conybeare's paper, page 401.Fig. 1. Is a view of Chalk Point, the promontory of which is formed of granite resting upon the schist. The vein of elvan is seen passing through the schist dipping at a smaller angle than that of its stratification.Fig. 2 & 3. Are different examples of the veins of elvan in the schist, representing some of the irregularities that characterize them. ”
Plates and Maps (1817)
“ The colouring points out the different rocks. The contact of that series called the Leadmine measures or Mountain limestone with the red marl or sandstone to the westward of Temming towards Brampton is not accurately ascertained, but a little to the south-east it has been traced by Professor Buckland from Melmerby to Murton, and is laid down in the map accompanying his paper (Plate 5.) The letters U and D, placed against the common slip dykes of the coal measures denote that the strata are elevated or depressed on that side by the number of fathoms marked atler the letter. ”
