452 EDSON S. BASTIN 
granites in composition. In Washington’s tables’ there are 141 
representatives of the sub-rang Toscanose, 85 of Lassenose, and 
103 of Liparose. They are mainly granites, rhyolites, and related 
rocks. 
If we examine the individual analyses in respect to the proportions 
between MgO and CaO and between K,O and Na,O, we find added 
evidence of similarity. 
MgO >CaO K,0 >Na.O 
Tn the normal and porphyritic gran- 
o out of 39 analyses 
o out of to analyses 
22 out of 35 analyses 
7 out of 10 analyses 
The granite-gneisses of this region therefore possess all the chem- 
ical characteristics of certain very common types of igneous rocks. 
A large number of granites and granite-gneisses of Sweden have 
been described by Holmquist? in his “Studien iiber die Granite von 
Schweden.”” Many of these have been affected by dynamic meta- 
morphism and show strongly developed parallel structure. Under 
the microscope they either exhibit well-defined kataclastic structure 
METAMORPHOSED GRANITES OF SWEDEN 
pee: of 
# ot) : L epresenta- 
aNoof, | Maumee’ | Class | Giazs [Order| Rang | Rang] Name | ves in 
Tables 
Dia beasts kg 103, 116 if I 3 2 3 | Tehamose 39 
Prise ete aeeac 2I, 120, 123, I I Aiea lt Ack 3 | Liparose 103 
134 
Mepeoinecle OFLU wee, fi I 4 9) 3 ‘Toscanose I4I 
122, 131 
Beene IQ, 20, 104 it IL 4 2 4 | Lassenose 85 
By. Sedat 127, 135, 136} I I 4 3 3 Amiatose 23 
fits eee 137 i I 4 3 4 | Yellowstonose 62 
Der anverae Ny? Ioo, 124 Il I 4 2 3 Adamellose 25 
era scnrch: 25 II I 4 2 4 TDacose 26 
My tlgustsa oe 130 II I 4 3 3. | Harzose 31 
Tee ey suse eats 22 II I 4 3 4 | Tonalose 124 
Blaise sts Io1I-125, 126 | II I 5 2 4 | Akerose 44 
Enable wci TOD paeq sien II I 5 3 4 | Andose 128 
« H. S. Washington, ‘‘Chemical Analysis of Igneous Rocks,” Professional Papers 
Nos. 14 and 28, U.S. Geol. Survey, 1903 and 1904. 
2 Holmquist, Bull. Geol. Institution, University of Upsala, Vol. VU, pp. 77-269 
(1904-5). 
