BOCKS OP BOHEMIA. 5-95 



1-5 ; the whole is characterized by him as t^e " etages de 

 quartzites ; " the lowest of the five bands is further subdivided 

 into a, /3, and y. 



D d 1 a rests with a slight unconformity on C, or on still lower 

 formations. It consists of a conglomerate, with green, sandy 

 matrix and small quartz pebbles, where it rests upon C, on the 

 right bank of the Beroun, between Teyrov and Skrey. It is also 

 exposed to the east of Hudlice, where it rests on B, and consists of 

 interstratified green grits and conglomerates. At Krusna Hora, 

 where it has proved fossiliferous, it consists of quartzose grits with 

 green grains (fig. 2). 



D d 1 j3 rests conformably upon a at Krusna Hora &c. (see 

 fig. 2). It consists of black, green, and red pisolitic ironstones, 

 containing, I was informed, a considerable quantity of phosphorus. 

 The pisolitic grains are frequently the colour of the matrix in which 

 they are imbedded ; but very often they consist of alternating shells 

 of light and dark green, imbedded in a blackish or reddish matrix. 



D d 1 y is of a much greater thickness than a and jS together. 

 It consists of exceedingly fine, slightly micaceous, black muddy 

 shales, with a somewhat flaky appearance, not usually very fossi- 

 liferous. At Yosek, to the S.W. of the basin, where fossils are 

 abundant, they are found imbedded in ironstone nodules an inch 

 or two in diameter, which are by no means generally distributed 

 throughout this horizon. 



D d 2, the most arenaceous band of the " etages de quartzites," 

 consists chiefly of white or light pink thickly bedded grits, with 

 occasional thin beds of sandy shale, and in some places, in the 

 neighbourhood of Beroun, there is a fairly thick series of pinkish 

 flaggy grits, ripple-marked, and with fucoid markings and annelid- 

 tracks. 



D d 3 consists of fine black muddy shales, with very minute 

 mica flakes ; with these are interstratified occasional thin beds of 

 grit. The whole is of no great thickness. 



D d 4. Gritty, ferruginous, and very micaceous shales, of a 

 predominating greyish colour, false-bedded, ripple-marked, and 

 with many fucoid marks and annelid- tracks. The series contains 

 a band of oolitic ironstones running parallel to the road between 

 Prague and Beroun, as shown in the map by Krejci and Helm- 

 hacker. In the neighbourhood of Vraz, to the N.E. of Beroun, some 

 calcareous beds occur, forming a strong feature. 



The limestone is nodular and of a dark colour, with interstratified 

 shales, and very fossiliferous. 



Dd5. A series of unctuous olive-green shales, interstratified, 

 especially towards the top, with gritty shales and grits. Prof. 

 Krejci divides this band into two (cf. his ' Geology of Bohemia,' 

 p. 385) : a lower shale division he terms " Bridlice Kralodvorske," 

 from Kraluv Dvur, near Beroun ; and an upper grit division, 

 " Kremence Kosovske," from Mt. Kosov, also near Beroun. In the 

 neighbourhood of Chodaun grey shales occur ; near Prague, fine, 

 black, very fossiliferous s^hales are interstratified with the ©rive- 



2s2 



