242 WARREN J. MEAD 
“derived”? elements, either chemically or mechanically, and thus 
enter into the constitution of the sediments. ‘These elements not 
derived from the crystalline rocks must be omitted from the analyses 
of the sediments before any quantitative estimates can be made on 
the redistribution of the elements of the crystalline rocks. In Table 
IT the “underived” elements are marked with an asterisk, and the 
sum of the “derived” elements is given below. Omitting the 
‘“‘underived”’ elements, the analyses are recalculated on a basis of 
100 per cent. totals which gives the analyses in Table III. 
TABLE II 
AVERAGE ANALYSES SELECTED FOR USE IN THE PRESENT DISCUSSION 
Av. Crystalline Av. Shales Av. Sandstone | Av. Limestone 
SIO gisiae socisecoeneme are 60.48 58.38 81.76 9-64 
AIG © igaritare suet e estamos leusa rs Te 07 TS 47 a9 1.28 
1 Dey © aA Mince er Aerie ere 2.61 4.03 16,28) 0.65 
He Op hiecuitarvease cient 3.44 2.46 0.57 seen 
NU bed Obata aera aie ee eet 4.10 2.45 0.85 6.20 
CAO ep aite wits tie ay deat beni 4.84 Bi) Siw) 41.60 
Nias Oo bos toisiorperae ceeadee BEAR Tu 0.61 0.33 
TO snopu teh anime hereon Ane 2.96 B25 Ta 24) 0.45 
Gail 3 © Jes Mehr Pat Sorel arth eer ner 1.89 5.02 1.69 0.97 
Aa © oi vasetcgcreh cueat eke rete eeu O72 0.65 On32 0.07 
Pes Open ie olen ots tecemass eee rere 0.26 On 0.07 On23 
REO Dea antennae cor aces 2.64 3.02 35-58 
ASS Oi Catena ens. aces eee: 1.46 0.08 0.15 
BaO and MnO.v../..0.:.- 0.10 0.05 0.04 
AM Otallles aes oh tec Many kates emeucnoes 100.00 100.46 100.10 100.19 
aD exive diz ae Gere ioe 98.11 Q1.34 95-30 60.49 
sWnderived (sweeney 1.89 @.12 4.80 39.70 
TABLE III 
“DERIVED”? ELEMENTS OF TABLE II RECALCULATED TO 100 PER CENT. TOTALS 
Ay. civeieting Av. Shales Av. Sandstone | Av. Limestone 
SIO DAN commeparanscn emote 61.60 63.90 85.72 15.94 
AZO eter cera dias neg aero 15-47 == 10-90 5-63 2.12 
eo OM herald vauceaentussemeens 2.66 4.41 T.20 TOF, 
FCO aria cptes ctersmishieeen BG 2.70 0.60 Bouck 
INSEE Aba a coe SERA mee are 4.60 526) Sey O75 
UWA © Feeatce ete orstren tee errasee cue ayer 4.18 2.69 0.89 10.25 
Cal Quid jensen renter cast abet clatieas 4.93 3.42 Beas 68.75 
Nias Oia aiepeetey seals) a clees) sci sie Be 50 1.44 0.64 0.55 
IN AO ln chs oo Grog a otro acsigt pe aren 3.02 3.56 1.29 0.74 
