490 MR. T. TATE ON EECENT BORINGS FOR 



sandstones and black shales belonging to the Millstone Grits/ 

 Notwithstanding this discouraging outlook, boring operations were 

 persevered in, until, 336 feet of Carboniferous strata having been 

 proved, without a trace of coal remunerative or otherwise, the 

 borehole was closed. 



To return to the Whitehouse No. 1 boring : the Magnesian Lime- 

 stone was succeeded by grey sandstones, rich in calcite, probably 

 due to infiltration. The lithological composition of the strata below 

 these — alternating carbonaceous shales, ironstone nodules, and sand- 

 stones with bands of encrinital limestone — warrants us in assigning 

 them to the Carboniferous Limestone Series (Yoredale Beds). The 

 fossils observed also support this identification.^ 



The chief results of this boring may be summed up thus :— 



(i) The Upper Keuper Eed Marls are wanting, as is the case in 



every borehole north of the Tees, excepting the outlying 



patch on Haverton foreshore, 

 (ii) The Salt-rock is absent, and the Eed Marl above that 



horizon is not ' rotten marl,' but compact, 

 (iii) The Bunter Series has no representative, 

 (iv) The Magnesian Limestone gives the thinnest complete section 



in Durham, namely 299 feet, 

 (v) No coal-seams are present, 

 (vi) The Yoredale Bocks are represented by encrinital limestones, 



carbonaceous shales, and sandstones. 



2. Whitehouse, Norton, No. 2 borehole. — The site of this borehole 



is 750 feet north-west of No. 1 borehole and 100 feet above 

 Ordnance datum. 



Borehole No. 2. Borehole No. 1. 



ft. in. ft. in. 



Surface-deposits « 134 ti 115 



Eed Sandstones and Marls... 157 151 



Saliferous Marls 172 9 177 11 



Magnesian Limestones 55 9+ 299 



Yoredale Rocks — — 336 7 



520 1079 



^ W. J. Bird, Trans. North of Eng. Inst. Min. and Mech. Eng. vol. xxxviii. 

 (1889) p. 21. To the courtesy of C. T. Casebourne, Esq., C.E., the writer is 

 indebted for the opportunity of inspecting these cores. Two borings north-west 

 of Seaton Carew are now in progress, but for obvious reasons the information 

 already obtained is not as yet available for publication. 



^ Since the above was written, Mr. J. Gr. Groodchild, Curator of the collection 

 of the Geological Survey of Scotland, in the Edinburgh Museum of Science and 

 Art, has kindly determined the following fossils, from cores submitted to him : — 



No. 90. Orthoceras cylindraceum ; Streptorhynchus crenistria ; Leaia (?) ; 



Aviculopecten, two species ; Cypricardites parallela ; Anthracomya ; 



Athyris ; Productus ; Lingula mytiloides ; Pygidium of Fhillipsia (4 



specimens). 

 No. 112. Fucoid (?) or worm-tube (?). 

 No. 113. Spirifer trigonalis; Productiis fimhriatus; Productus, sp. ; Athyris; 



Aviculopecten ; Encrinital stems. 

 No. 115. Lingula mytiloides ; Bellerophon Urei{?). 



