PETROLOGICAL ABSTRACTS AND REVIEWS 493 



Klemm, G. "tJber die Enstehung der ' Felsenmeere ' des Fels- 

 berges und anderer Orte im Odenwalde," Notizhl. d. Vereins f. 

 Erdk., etc., z. Darmstadt, V Folge, Hf. 3, 191 7 (1918), 3-1 1, 

 pis. 2. 



Considers these particular rock-streams as due to removal of interstitial 

 weathered material. The blocks lie practically in the positions where they were 

 originally formed. 



Klemm, G. "Der Granatfels von Gadernheim im Odenwalde und 



sine Nebengesteine," Notizhl. d. Vereins f. Erdk., etc., z. 



Darmstadt, V Folge, Hf. 4, 1919, 3-32. 



The flaser granite of Gadernheim shows an original contact at the south and 



east against metamorphosed sediments. This metamorphism was produced 



by gabbro which altered the sediments to garnetfels, cordierite-hornfels, biotite- 



hornfels, amphibolite, graphite-schist, and graphite-quartzite. The gabbro 



itself was altered by endogene contact action to hornblende-gabbro with a 



dioritic selvage. 



KoLDERUP, Carl Fred. ''Egersund," Norges Geol. Undersbk, No. 

 71, 1914. Pp. 60, pis. 4, map I. 



A geologic report on a quadrangle in the southwestern part of Norway, 

 about 60 km. SSE. of Stavanger. The principal part of the area is composed 

 of labradoritites and pyroxene-poor norites. The composition of one of the 

 latter is given (p. 18) as labradorite 92 per cent, pyroxene 7 per cent, and 

 ilmenite i per cent. There is a smaller area of mangerites and norite-mangerites. 

 Among the dike-rocks are mangerite, birkremite, quartz, ilmenite, granite- 

 pegmatite, and diabase. 



KoLDERUP, Carl Fred. " Fjeldbygningen i str^ket mellem s0r- 

 fjordem og Sammangerfjorden i Bergensfeltet," Bergens 

 Museums Aarbok, 1914-15, No. 8. Pp. 257, figs. 91, colored pis. 

 2, maps 3. 



The district of the Bergen arches is characterized by a peculiar arrangement 

 of the various formations in curves. The rocks are dynamo-metamorphosed 

 and are in part sedimentary and in part igneous. Phyllites are the most com- 

 mon sediments, and consist of quartz and muscovite with various accessories. 

 In the phyllite zone occur serpentines, soapstones, green-schists, saussurite- 

 diabases, saussurite-gabbros, labradoritite, norite, mangerite, and birkremite. 

 The serpentines are considered metamorphosed igneous rocks, probably peri- 

 dotites or pikrites. The green-schists were probably originally basic volcanic 



