SYSTEMATIC POSITION OF FUSED SAMPLES 



443 



well is compared with a malchite from Zwingenberg, Baclen. It is possi- 

 ble also to match fairly closely the hypothetical fused product (calculated 

 from the analysis of the original sediment assuming a loss of all volatile 

 constituents and no addition of iron) with a quartz diorite from Electric 

 Peak, Yellowstone National Park. 



Si02 64.40 



AI2O3 17.18 



PeoOs none 



FeO 6.53 



MgO 1.52 



GaO 3.38 



Na^O 3.42 



K,0 2.22 



H,0+ 0.24 1 



H2O— 0.02 1 



CO2 none 



TiO^ : 0.62 



P2O5 0.28 



SO3 



CI 



S 0.06 



CrgOs trace 



MnO 0.07 



(NiCo)O 



BaO 0.08 



SrO 



Li,0 



Sum 100.02 



Less O 02 



'ison of fused Core with 



igneous 



Rocks 







2 



3 



4 



5 



6 



7 



63.18 



65.94 



65.11 



58.63 



64.1^ 



] 61.02 



17.03 



18.21 



16.21 



18.59 



16.91 15.85 



0.24 



none 



1.06 



1.93 



4.44 3.92 



6.37 



4.24 



3.19 



6.46 



3.05 3.48 



0.92 



1.65 



2.57 



2.62 



3.0' 



3.60 



4.17 



3.26 



3.97 



0.56 



3.41 5.24 



4.44 



3.50 



4.00 



2.58 



1.39 3.96 



2.91 



2.23 



2.51 



2.01 



3.56 3.23 



0.52 







0.94 



|4.45 



|1.38 



none 











.... 



0.62 



0.71 



1.01 











0.23 



0.22 



0.02 



0.08 











0.19 



0.06 

 0.07 



trace 

 none 



none 



none 



0.38 

 0.03 

 0.06 











.... 



.... 



0.04 



trace 











100.20 



100.00 



100.33 



100.77 



100. 0( 



) 100.00 



Sum 100.00 100.20 100.00 100.33 100.77 100.00 100.00 



1. Fused core, Montezuma w^ell (number 3, Table 1). 



2. Malchite, Zwingenberg, Melibocus Mountains, Baden. Heurich, analyst. 

 A. Osann. Mitt. Bad. Geol. Laud-Anst II, 1893, page 385. 



3. Result of fusion of Tejon sediment of Montezuma well, assuming loss of 

 volatile matter and no addition of iron. 



4. Quartz diorite, Electric Peak, Yellowstone National Park. J. F. Whit- 

 field, analyst. J. P. Iddings, United States Geological Survey, Annual Report 

 XIT, 1. 1891, page 627. 



5. Buchite (fused phyllite) Sailean Sligenach, Ardmucknish, Argyllshire, 

 Scotland. W. Pollard, analyst. Memoirs Geological Survey Scotland, number 

 *45. 1908, page 132. 



6. Average shale as calculated by Hobbs. 



7. Average igneous rock as recalculated by Hobbs for princii'jal constituents 

 from the results of Clarke and Washington. 



