LOWER SILURIAN ROCKS OF NORWAY. 
11 * 
^ ^ enoimous thickness, which, containing very little calcareous matter, is in 
general composition, strike and position, entirely distinct from the Silurian strata 
by which it is overlaid. 
In Norway these ancient crystalline rocks rise into mountains and form the 
n , S 0t tr0Ughs °* P alseoz oic strata, which have in their turn been invaded by 
granites, syenites, porphyries, greenstone and trappeean rocks of another epoch 
e ns take the territory of Christiania as an example. Rising in altitude from 
si 1 1 °, n ° rth ’ the gneiSS there 0CCU P ies the rocky and barren country on either 
e o tie long fiord of Christiania 1 . The mass upon the west extending from 
ns lansand to the lofty mountains of Bergen, flanks the paleozoic rocks in a 
vious line, extending from the marine bay of Lango Sund, by the east of Kongs- 
t r g, and thence north-north-east by the river Drammen and the western sides of 
c i !! 6S °* Tyn fiord and Rands fiord. The eastern gneissose boundary advan- 
g rom Gottenburg and Sweden to Friederickstadt, constitutes nearly all the 
moun?- 10Ck u ° f the SaU Water fi ° rd ° f Christiania > and occupying the 
am called Egeberg to the east of that town, extends to the north-north-east 
y r Ule ea stern side of the great lake Miozen. 
su^ 6 Pal0eozoic deposits lie in a long trough between these crystalline masses ; 
torv nfpi™ 1 featUre§ bdng Correctly laid down in the geological map of the terri- 
and we 1 utiail ' a d y Professor Keilhau 2 . Minute details are here uncalled for, 
this palaso ' ^ s nnply to state, that by making two transverse sections across 
broken u i ^ ou gh on different parallels, we found that although extremely 
its lowe*' C 1 diversified by various plutonic rocks, and very much dislocated, 
members consisted of quartzose sandstone and hard slaty schists; the 
Rev. W Wlth pleasure thls opportunity of expressing his obligations to his friend the 
volumes will be'f G ' S ’’ Wh ° re l )eatedl y urged him to visit Norway, and in whose attractive piscatorial 
mers v °und some good suggestions and many interesting geological souvenirs. (‘ Two Sum- 
m In or way, vo l. ii. p . 150-) 
as exhibited 1 ’ ^ ^ pal£cozoic succ ession from the lowest Silurian to the Old Red Sandstone inclusive, 
Scandin ^ ^ SOUtbern l larts of Norway, was read by Mr. Murchison before the General Meeting of 
in their TolT Phll0S ° PherS ’ ^ Christiania ’ July 1844 ’ and has ’ we believe, been published by them 
After t rav ° Ume Wit ^ an ex l d anatory woodcut (essentially the same as that which we give at p. 13) 
before Sweden in the same summer and arriving at St. Petersburgh, Mr. Murchison there read 
ing the relaH 1361 ^ t S ° Ciety ° f that Metro P olis > a brief outline of his general views respect- 
previously ° ^ Sliurian r0cks ° f Sweden and Gothlulld tu those of Russia with which he was 
Options ha vo r These ldeas are n0W essentially embodied in the text, and more detailed de- 
jeen given by Mr. Murchison to the Geological Society of London. 
