Yol. 57.] IGNEOUS EOCKS OF THE TORTWOKTH INLIER. 



273 



trap are clear and abundant. Along the north side of the field, 

 which is bordered on the east, west, and south by parts of this 

 wood, runs a deepening trench or generally dry watercourse. 

 Here are several exposures of amygdaloidal, much-weathered trap, 

 containing in one place a block of baked shale. Good exposures of 

 a fresher, more compact rock are seen at the southern end of the 

 field near the border of the wood. And along the wooded slopes on 

 the western side of the field, blocks of sedimentary rock and frag- 

 ments of trap are strewn over the surface. 



A little farther west, in the next field, is an exposure of pink, 

 sandy limestone, dipping east-south-eastward at 25^. It was 

 found to contain Favosites cristatus, Blum, F. Forbesi, M.-Edw., 

 Lindstroemia sp,, and Orthis sp. 



There are a number of exposures in the bed of the little stream 

 which runs through the southern part of Daniel's Wood, and then 

 flows between two fields before it joins the larger stream passing 

 by Oldbrook Earm towards Middle Mill. Immediately west of the 

 wood, between the boundary-hedge and a small footbridge, beds of 

 limestone and sandstone occur dipping 30° north-westward ; but a 

 little higher up the stream, within the limits of the wood, the dip 

 increases rapidly antil it reaches 75° — the direction remaining north- 

 west. About 60 paces from the hedge, trap is found crossing the 

 bed of the stream, and apparently striking parallel to the sedimentary 

 beds which here overlie it. Unfortunately, the exact boundary 

 between the igneous rock and the sedimentary beds is not exposed. 



Fig. 1. — Section across the southern end of DanieVs Wood. 



Scale;i2 inches = i mile. 



W = Wenlock Limestone (that at the 

 eastern end of the exposure is 

 sandy). 



T = Trap. 



L = Upper Llandovery Sandstone, 



According to the Geological Survey mapping, the stream here 

 traverses beds of Ludlow age. The fossils which we collected from 

 the limestone-bands overlying the trap indicate, however, that the 

 strata are Wenlock. The following were identided by Mr. Reed: — 



Calymene Bhimenhaehi, Brongn. 



Beyrichia Kloedeni,'M.'Coj. 

 ^Stropkonella funiculata, M'Coy. 



Sir. euglypha, His. 



Lept(B7ia rhomboidalis, Wilck. 

 *Plectambonites (1) Fiefcheri, Dav. 



Orthis biloba, Linn. 



Ehj/nchoneUa (CamarotoechUi) dio- 



donta, Dalm. 

 Atri/pa reticularis, Linn. 

 Pentanierus sp. 

 *Periechocrinus moniliformis, Mill. 



* Indicates most abundant species. 



