Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-upon-Tyne . rocks as seen at Claxheugh in 1884(5), ^^^ says,Were it not for the interesting group of organic remainsfound in the Marl Slate, it would no doubt be properly re-garded as merely a subordinate member of the limestone,although occasionally there are distinct lines of unconformitybetween the two. This is notably the case at Claxheugh,where a splendid section is exposed on the south bank of theWear about two miles above Sunderland. Clear as the factis that here, the Marl Slate was disturbed and denude
Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-upon-Tyne . rocks as seen at Claxheugh in 1884(5), ^^^ says,Were it not for the interesting group of organic remainsfound in the Marl Slate, it would no doubt be properly re-garded as merely a subordinate member of the limestone,although occasionally there are distinct lines of unconformitybetween the two. This is notably the case at Claxheugh,where a splendid section is exposed on the south bank of theWear about two miles above Sunderland. Clear as the factis that here, the Marl Slate was disturbed and denuded beforethe deposition of the Magnesian Limestone on it, the uncon-formity is probably only a local one with no general signi-ficance (6). DESCRIPTION OF SECTION. The manner in which the Marl Slate and Compact Lime-stone terminate is shown in Section I. It will be seen thatthese two beds are present at the western end but absent fromthe eastern, and the manner in which they end is complicatedand peculiar. This can perhaps be only properly realised by EXPLANATION OF THE CLAXHEUGH SECTION. 215. , .m 2.—Photograph of disturbed masses 01 Compact Limestoneand breccia, of which a detailed section is given inSection 2. 2l6 EXPLANATION OF THE CLAXHEUGH SECTION, . mtuiTli-^.:-:7.\--^ *- ^ M Plj|li:l h -aI IP a. - H| 9- - - -llil; v:> - - ~~^fe- - - ~-H|| - - m - - m - Tijl-Ss ^ _ _ -WP z - o - ~ \ r^ -i: H _ _ - - -tfi^Jiiro CJ _ _ _ \ |\^;•; u — — V/• 00 - - - Wi^i LJ iri N O Q< H <;in H 55C ao b ^5 c -o • ^ B o U fa ^ 13 -s9 I w -I .S ^:3 I—I Td § ^ O O) cf to U g ^ 1-1 CJ o ? w o S o Td C/D Q O) ^ •n O s »cj k; c^ a =« .J Q ^ EXPLANATION OF THE CLAXHEUGH SECTION. 217 a visit to the actual exposure, but it is hoped that the sectionsand accompanying photographs portray as far as possible thereal nature of the section. Instead of the two divisions endinggradually as in a case of the dying out of strata, or abruptlyas might have been possible if the
Size: 2112px × 1183px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, booki, booksubjectnaturalhistory
