1. No category

UNITED STATES DEPARTMENT OF THE I N T E R I O R
GEOLOGICAL SURVEY
Analytical results and sample locality map
.
o f strem-sediment moss-trap-sediment,
and heavy-mi neral -concentrate sarples
f r a the White Mountains Recreation Area,
L i vengood and Circle quadrangles, east-central Alaska
BY
Stephen J. ~ u t l e y l .Richard M. O1~earyl.
Gregory K.
eel,
and Thomas 0. ~ i ~ h t '
Open-Fi le Report 87-285
This report i s preliminary and has not been reviewed for conformity w i t h
U. S. Geological Survey edi tori a1 standards and stratigraphic nomenclature.
Any use of trade names i s for descriptive purposes only and does not imply
endorsement by the USGS.
'DFC, Box 25046, MS 973, Denver, CO
80225
1987
Page
........................o.......................... 11
..............
.
......................................... 11
........................................................
.................................................... 3
Studies Related t o 0l.M
Introduction
Methods o f Study
SampleHedia
Sample Collection
Stream-sediment and mss-trap-sediment sumples
Heavy-mi neral -concentrate saraples
Sample Preparation
Sample Analysls
Spectrographic method
Ataic-absorpt i o n nethod
Rock Analysis Storage System (RASS)
Description of Data Tables ................................................
References Cited
..............................................................
.................. 3
...............................
3
................................................ 3
......................................................
...........................................
........................................
4
4
.......................................
4
..........................................................
5
4
4
.
.
L o c a l i t i e s o f stream.sediment. moss.trap.sediment
and
P l a t e la. b
heavy-mineral-concentrate samples from the White Mountains
.in pocket
Recreation Area. Livengood and C i r c l e quadrangles. Alaska
.
......
Figure 1 Index map showing location o f the White Mountains
Recreation Area. Alaska
..............................................
2
.
............................. 7
nbl e 2 . Chemical method used ............................................ 8
Table 3 . Results o f analyses o f stream-sedimnt samples .................. 9
Table 4 . Results o f analyses of the minus-80 f r a c t i o n o f moss-trap
sediment sanples .....................
.
............................ 42
Table
. 1 Limits o f determination f o r spectrographic analysis o f
stream sediwnts and moss-trap sediments
a
.
Results o f analyses of the plus-80-mesh t o minus-30 msh
Table 5
f r a c t i o n s o f mss-trap-sediment samples..
............................ 69
Table 6 . Results o f analyses o f heavy-mineral-concentrate samples ........ 87
STUDIES RELATED TO BLH
Bureau o f Land Management Recreatj on Areas
The Federal Land Policy and Management Act (Public Law 94-579, October 21, 1976)
requires the U.S. Geological Survey to conduct mineral surveys on certain areas t o
determine t h e i r mineral value. Results must be made available t o the public and be
submitted t o the President and the Congress. This report presents the results of a
geochemical survey of the White Mountains Recreation Area, Livengood and Circle
ouadrangles, Alaska.
INTRODUCTION
In June 1986, the U.S. Geological Survey conducted a reconnaissance geochemical
survey of the White Mountains Recreation Area, Livengood and Circle 1" x 3"
quadrangles, east-central A1 aska.
The White Mountains Recreation Area comprises about 1,200 m i 2 (3,100 km2)
(770,000 acres) in the eastern Livengood and western Circle quadrangles, Alaska, and
l i e s about 50 m i (80 km) north of Fairbanks, Alaska (fig. 1). Access t o the study
area i s provided on the southeast by a d i r t road from the Steese Highway t o Norne
Creek, and via the waterway of Beaver Creek to the southern, western, and northern
parts o f the study area.
The following summary of the geology i n the White Mountain study area i s taken
from Weber and others, 1985:
The White Mountains study area comprises a northeasterly trending sequence of
Precambrian to Mesozoic sedimentary, metasedimentary, and volcanic rocks i n the
northwestern part of the Yukon-Tanana Upland. These rocks consist mostly of
Cambri an-Precambrian quartzite, quartz mica schist, bimodal quartzite ( " g r i t " ) ,
phyllite, and a r g i l l i t e Ordovician s l a t e , chert, minor limestone and JurassicCretaceous conglomerate, graywacke, quartzite, and slate. The White Mountains
€hemselves are made up primarS ly o f Ordovician basalt and agglomerate and Silurian
limestone. Cretaceous-Tertiary granitic intrusions form topographic highs a t Cache
Hountain and Victoria Mountain. Syenite i s present in one ridge e a s t of Cache
Mountain and a narrow band of mafic/ultramafic rocks crosses the study area
paralleling the regional northeast strike. Quaternary loess blankets a major part of
the southern 1/3 of the area and alluvial deposits f i l l the major drainage courses.
Much of the area i s underlain by permafrost. Outcrops are scarce except where r e l i e f
i s high.
Two periods of tectonism and metamorphism i n the region produced f i r s t , subisoclinal northeast-vergent northwest-trending folds, and second, northeast-trendlng
folds and northwest-verging thrust f a u l t s that control the distribution of rock types
presently exposed. Generally, though, the rocks s t r i k e northeast and dip northwest.
The topographic relief i n the study area i s about 4,300 f t (1,300 m), with a
maximum elevation of 5,286 f t (1,611 m) a t Mount Prindle. The White Mountains
Recreation Area contains the greater part of the drainage basins of Victoria and
Beaver Creeks above t h e i r confluence. The climate of the area i s arid t o semiarid.
The high-1 a t i tude tundra prohibits ground-water seepage and enhances surf ace runoff
.
METHODS OF STUDY
Sample Media
The stream-sediment samples represent the rock material eroded from the drainage
basin upstream from each sample s i t e . Chemical analyses o f these stream sediments
are useful in identifying those basins which contain concentrations of elements that
may be r e l a t e d t o mineral deposits. Moss-trap sediments represent eroded material
F i g u r e 1. Index map showing l o c a t i o n of t h e White Mountains R e c r e a t i o n Area,
A1 aska.
2
a c t i v e stream channel. These sanples are s i m i l a r to stream-sedimnt samples,
and are o f t e n #re e a s i l y obtainable, especially i n areas o f t h i c k loess
cover. Heavy-mineral-concentrate sarples provide information abwt the
cherristry o f c e r t a i n minerals i n rock n a t e r t a l eroded f r a the drainage basin
upstream fron each sample site. The selective concentration o f ainerals, som
of which may be ore related, p e r n i t s determination o f solre e l m n t s t h a t are
mt e a s i l y detected i n stresrtsedlrnt samples, because o f the d i l u t i o n e f f e c t
o f the c m n rock-f o r n i ng mineral s.
Samples were collected a t 531 s i t e s ( p l a t e I).
Sample s i t e s were
selected t o urpplerrent data previously obtained frm samples c o l lected during
t h e National U r a n i u Resource Evaluation program (Meaver and others, 1983;
Bailey and others, 1987). A t nearly a l l o f those s i t e s a strew-sediment
sanple was collected. Yhere suitable outcrop was available, rock saaples were
collected; where s u f f i c i e n t material f o r panning was available, heavy-mineralconcentrate sanples were col lected. Moss-trap-sediment sarples were c o l lected
a t 364 sites. Analytical data for rock s a ~ p l e swere reported by Sutley and
othen2(1987). Average sanpllng density was about one sample s i t e per 2
1/2 m i f o r the siream s e d i m t s and moss-trap sediments, and about one sauple
s i t e per 3 112 m i f o r the heavy-mineral concentrates.
Stre-sediment
and mss-trapsedirnt s-lw
The stream-sedinent samples consisted of active a1luvium collected
primari 1y fram f irst-order (unbranched) and second-order (below the junction
of two first-order) streams as shown on USGS topographic maps
(scale = 1:63,360).
Each sample was camposited from several l o c a l i t i e s w i t h i n
an area t h a t may extend as much as 100 f t fron the s i t e plotted on the map.
Heavy-mineral -concentrate s a p 1es were col 1ected f r a n the same active
alluvium as the stream-sediment sanples. Each bulk sample was screened w i t h a
2.0-m (lo-mesh) screen t o r m v e the coarse material. The less than 2.0-m
f r a c t i o n was panned u n t i l =st of the quartz, feldspar, organic material, and
c l ay-sized material were r w v e d .
The stream-sedirnent samples were oven dried, then sieved using 80-mesh
(0.17-m) stainless-steel sieves. The p o r t i o n o f the sedinent passing through
the sieves was saved f o r analysis.
Moss-trap-sediment sanples were screened and the organic material
separated by f l o t a t i o n . After oven drying, the sediment was sieved using
3O-mesh (0.50-m) and 80-mesh (0.17 m) stainless-steel sieves. Both the
plus-80-msh t o minus-30-mesh and the minus-80aesh f r a c t i o n s were saved f o r
analysis
After oven drying ( a t <lOOmC), bromoform (specific g r a v i t y 2.8) was used
t o remove the remaining quartz and feldspar from the heavy-mineral -concentrate
samples t h a t had been panned i n the field. The resultant heavy-mineral sample
was separated i n t o three fractions using a large electromagnet ( i n t h i s case a
m d i f i e d Frantz Isodynamic Separator). The m s t magnetic material, p r i m a r i l y
.
magnetite, was not analyzed. The second, less-magnetic fraction, largely
ferrmagnesian s i l i c a t e s and i r o n oxides, was saved f o r archival storage. The
t h i r d f r a c t i o n (the least magnetic material which may include the nomagnetic
ore minerals, zircon, sphene, etc.) was s p l i t using a Jones s p l i t t e r . One
s p l i t was hand ground far spectrographic analysis; the other s p l i t was saved
f o r mineralogical analysis. These magnetic separates are those that would be
produced by using a Frantz Isodynaric Separator set a t a slope of 15' and a
tilt o f 10" with a current o f 0.1 anpere t o teawrve the magnetite and ilnenite,
and a current of 1.0 anpere t o s p l i t the rmainder o f the sarple i n t o
paramagnetic and n o m g n e t i c fractions.
Spectrographic rethod
The stream-sedimnt, heavy-mimral-concentrate, and both ross-traps e d i w n t fractions were analyzed f o r 31 elements using a semiquantitative,
direct-current arc emission spectrographic method (Grims and Marranzina,
1968). The elements analyzed and t h e i r lower l i m i t s o f determination are
l i s t e d i n table 1, Spectrographic results were obtained by visual comparison
o f spectra derived f r o m the salnple against spectra obtained frm standards
made from pure oxides and carbonates. Standard concentrations are
gecmetrically spaced over any given order of magnitude o f concentration as
follows: 100, 50, 20, 10, and so forth. Sanples whose concentrations are
estimated t o f a l l between those values are assigned values o f 70, 30, 15, and
so forth. The precision of the analytical method i s approximately plus or
minus one reporting interval a t the 83 percent confidence level and plus o r
minus two reporting intervals a t the 96 percent confidence level (Motooka and
Grimes, 1976). Values determined f o r the raaj o r elements (iron, magnesium,
calcium, and titanium) are given i n weight percent; a1 1 others are given i n
parts per m i l l i o n (micrograms/grm). Analytical data f o r sanrples from the
Uhite Mountain Recreation Area are l i s t e d i n tables 3-6.
*
Kttmic-absorpt ion .ethal
Stream-sediment samples and the minus-80 fraction o f the moss-trap
sedimnt samples from the Uhite Mountains Recreation Area were analyzed for
As, Bi, Cd, Sb, and Zn by atonic-absorption spectrcmetry (OILeary and Viets.
1986).
ROCK M Y S I S STORAGE SYSTEM
Upon completion of a1 1 analytical work, the analytical r e s u l t s were
entered i n t o a computer-based f i l e called Rock Analysis Storage System
(RASS)
This data base contains both descriptive geological information and
analytical data, Any o r a l l of t h i s information may be retrieved and
converted t o a binary form (STATPAC) f o r computerized s t a t i s t i c a l analysis o r
pub1i c a t i o n (VanTrmp and Miesch, 1977).
.
DESCRIPTION OF DATA TABLES
Tables 3-6 l i s t the results o f analyses f o r the samples of stream
sediment, the mirms-80 f taction of moss-trap sediment, the plus-80-mesh t o
minus-30-mesh f r a c t i o n o f mss-trap sedimnt , and heavy-mineral concentrate,
respectively. For the four tables, the data are arranged so that colum 1
contains the US$-assigned sample numbers. These nunhers correspond t o the
m i h e r s shwn on the s i t e location map (plate 1). The alpha prefixes and
s u f f i x e s i n the table are a r i t t e d on the map. Colmns i n which the elanent
headings show the l e t t e r 's* below the elelpent symbol are emission
spectrographic anaTyses; *aaH indicates a t m i c absorption analyses. A l e t t e r
wN" i n the tables indicates that a given e l e ~ e n twas looked for but not
detected a t the lower l i m i t o f determination shown f o r that element i n
t a b l e 1. I f an element was observed but was below the lowest reporting value,
a "less thanY syabol (<) was entered i n the tables i n f r o n t of the l w e r l i m i t
o f detemination. I f an elelrent was observed but was above the highest
reporting ualue, a 'greater than" synbol (>) was entered i n the tables i n
f r o n t o f the upper 1i m i t o f determination. An asterisk (*) i n the column for
Au i n table 6, heavy-mineral-concentrate data, indicates samples i n which
v i s i b l e Au was observed i n the non-magnetic separates (R. B. Tripp, U.S.
Geological Survey, written connnrn.) and/or where v i s i b l e Au was observed i n
the panned concentrate i n the f i e l d . Because o f the formatting used i n the
computer program that produced tables 3-6, same o f the elemnts l i s t e d i n
these tables (Fe, 4, Ca, T i , Ag, and Be) carry one o r more nonsignificant
zeros t o the r i g h t o f the significant digits, The analysts d i d not detennine
these elements t o the accuracy suggested by the extra zeros.
The spectrographic determinations for Au, Cd, Sb, W, and Th i n streamsedinent samples, f o r As, Au, Cd, Sb, W, and Th i n the minus-80 f r a c t i o n of
moss-trap-sedinent samples, and for As, Au, B i , Cd, W, and Th i n the plus-80m s h t o minus-30-llesh f r a c t i o n o f moss-trap-sediment samples were a l l below
the lower l i m i t s of determinations shown i n table 1; consequently, the columns
f o r these elements have been deleted from tables 3, 4, 5, and 6, respectively.
REFERENCES CITED
Bailey,
E. A,, Lee, 6. K., and Light, T. D., 1987, Semiquantitative m i s s i o n
- spectrographic
analytical results and sample l o c a l i t y map of streamsediment sarnples collected during the National Uranium Resource
Evaluation Program fron the Livengood and western 113 o f the Circle
quadrangles, east-central Alaska: U.S. Geological Survey Open-Fi l e
( i n press).
Report 87-
-
Chapman, R. M., Ueber, F. R., and Taber, Bond, 1971, Preliminary geologic map
o f the L i vengood quadrangle, A1aska: U .S. Geological Survey Open-Fi l e
Report 71-66, 2 sheets, scale 1:250,000.
Grimes, D. J., and Marrantino, A. P. ? 1968, Direct-current arc and
alternat i ng-current spark emission spectrographic f i e l d methods f o r the
semiquantitative analysis of geologic materials: U.S. Geological Survey
Circular 591, 6 p.
bbtooka, J . M., and Grimes, 0. J., 1976, Analytical precision of one-sixth
order semiquantitative spectrographic analyses: U.S. Geological Survey
Circular 738, 25 p.
0' Leary, R. M., and Viets, J. G., 1986, Determination of arsenic antimony,
bismth, cadnium, copper, lead, molybdenum, silver, and zinc J n geologic
materials by atomic absorption spectrophotonetry using a hydrochloric
acid-hydrogen peroxide digest ion: Atomic Spectroscopy, v. 7, p , 4-8.
Sutley, 5. J., Ryder, J. T., Light, T. O., and Weber, F. R., 1987, Analytical
r e s u l t s and sample l o c a l i t y map of rock samples f r o m the White libuntains
Recreation Area, Livengood and Circle quadrangles, east-central Alaska:
U.S, Geological Survey Open-File Report 87( i n press).
Vanfruq, korge, Jr., and Uiesch, A. T., 1977, The U.S. Geological Survey
RASS-STATPAC systen for managanent and s t a t i s t i c a l reduct i o n of
geocheaical data: Comuters and Geosciences, v. 3, p. 475-488.
Weaver, T. A., Freeman, S, H,, Broxton, D. E,, and Bolivar, 5. L., 1983, The
geochemical atlas o f Alaska: Las A l m s National Laboratory Report GJBX32(83), LA-9897-MS UC-51, 49 plates, scale 1:6,000,000.
Weber, F. R,, Smith, T. E.,
Hall. H. H., and Forbes, R. B., 1985, Geologic
guide t o the Fairbanks-Li vengood area, east-central Alaska: A1aska
Geological Society Guidebook, 44 p.
o f detemination for the spectrographic analysis o f
mss-trap sedi~entsand stream sediments. based on a 10-rrg sample
TABLE 1.--Limits
[The spectrographic 1i m i t s o f determination f o r heavy-mi neral-concentrate
samples are based on a 5 a g sample, and are therefore two r e p o r t i n g i n t e r v a l s
higher than the l i m i t s given f o r stream sediments and moss-trap sediments]
Elements
Lower determi nation 1 i m i t
Percent
I r o n (Fe)
Magnes i urn (Mg)
Calcium (Ca)
Titanium ( T i )
Parts per m i l l i o n
Manganese (Mn)
S i l v e r (Ag)
Arsenic (As)
Gold (Au)
Boron (B)
Barium (Ba)
5ery 11ium (Be)
Bismuth ( B i )
Cadmium (Cd)
T o b a l t (Co)
Chromium (Cr)
Copper (Cu)
Lanthanum (La)
Molybdenum (Mo)
Niobium (Nb)
Nickel ( N i )
Lead (Pb)
Antimony (Sb)
Scandium (Sc)
T i n (Sn)
Strontium (Sr)
Vanadium ( V )
Tungsten (W)
Y t t r i u m (Y)
Zinc (Zn)
Zirconium (Zr)
Thorium (Th)
Upper determination 1i m i t
TABLE 2.-Chemical
mthod used
[A4 = atomic absorption]
Elenent or
constituent
detemined
Arsenic (As)
Antimny (Sb)
Zinc (Zn)
Bismuth (Bi)
Cadmium (Cd)
Oetemination l i m i t
Method
AA
AR
AA
AA
AA
(micrograms/
gram or PPR)
Reference
0' Leary and
Viets, 1986.
i
Tlblt 3, Rnults of analyses of strrarsedirmt samples
[I,
not d c t ~ t c d ;(, drtectrd but belor tlw lirit of detrrrination s h m ;
detwrlncd to be grcatw than thr value sham.3
),
Latitude
Crpct
s
.
.
65 17 3
a30
6510 9
6s 10 51
65 19 10
65 32 58
20
a30
h-ppr
s
300
so0
ZOO
300
.30
,10
900
1.00
1.00
-15
1 ,OQO
300
200
65 20 23
.lo
bJ 18 27
.20
500
200
6s 45 38
6s 4s 44
6s 47 21
bS 23 47
65 23 37
10
.70
a 30
$05
* 05
200
65 23 21
7
* 15
1,000
.lo
so0
.20
200
500
300
69 33 12
65343
65 20 39
6525
65 24
65 25
65 25
56
10
35
*
0
.lo
.IS
704
300
300
500
Table 3. Results of analyses of strnr#dirmt nrpln--Continued
W
< 10
I
(10
n
I
I
i
i
!
f
r i '
(10I
n
,!
Table 3. Results of lnalysrs af strcu-Wimt luplts--Contlnurd
Sb- ppr
a1
b-ppr
I-ppa
Pb-ppm
J
S
S
wtul
SalYl
)81n
sa1n
zetn
1OtUl
own
MIll
u1n
utr1
9LIUl
UfVl
t11n
urn
urn
1
L
W
I1
011n
b9fn
wt n
0s
OT
PI
C
or
El
$1
s1
s1
SI
c
E1
OE
El
01
L
01
02
Oi!
Of
I
N
N
N
N
N
I
N
1
N
LPtWl
:wrtn
nrn
- #In
HIn
arn
1Sf 11
utn
8)ln
Ltltn
Latitude
Lmgit ude
63 45 24
146 40 30
146 13 26
1
4 31 19
144 32 46
14633 0
65 43 26
MU22
146 33 4
a43 9
45 44 39
6s 44 39
146 3f 34
146 iT9 Jb
1
4 n 4s
65 42 40
65 48 54
63 29 58
65 35 1e
146 30 2
1
4 39 9
147 50 35
147 42 12
147 42 15
65 38 3s
65 39 45
65 39 48
65 21 15
65 21 18
147 10 25
147 ;f3 47
147 33 42
146 47 20
146 47 35
65 20 5
65 21 35
65 21 35
65 20 30
65 18 35
146 SO 25
I4b 52 33
146 52 50
146 s4 50
147 14 35
6s 51 10
bs 51 15
bs 51 15
147 IS 30
147 11 45
147 10 30
147 B 40
147 3 SO
6s 4s 43
bS 47 41
a47 9
4
n
65 35 20
65 49 1
M 48 18
6s 49 10
45 49 21
4s 51 5B
65 49 28
65 51 S
bS
65
6s
bS
23 35
23 30
20 55
19 52
kpct.
Ti-pct.
Ik-ppn
s
5
5
146 33 IS
146 59
146 S6
146 50
144 31
146 33
52
32
10
40
10
1% 35 55
116 33 40
146 35 45
65 19 40
146 43 5
146 47 50
65 58 38
65 57 2
65 31 35
65 31 35
65 31 52
149 40 0
149 S4 35
147 20 22
147 21 25
147 23 2S
1
'I
I
300
100
70
500
n
11
n
N
I 2 0 0
-
n
n
100
zoo
ZOO
300
300
Table 3. Results of inalyses of stream-sediment rupln-4hItinwd
loo
(100
w
100
200
b .
Tale 3.
Latitude
Results of snrlysrs of s t r r r r c d i m t
Crpct.
Ti-pct.
s
5
65 14 52
b5 I 6 ZJ
6s 16 3s
65 16 12
bJ 14 34
bJ 14 34
65 13 40
63 15 20
65 18 20
bS 18 27
65 20 10
bs 20 12
65 20 14
b5 20 16
bS 20 15
6s 20 1s
65 21 26
65 21 2 1
65 21 15
65 21 43
bs
bs
65
65
65
21 43
21 44
21 10
21 46
21 44
bJ22 4
65 16 31
45 16 $0
65 17 10
bS 17 40
65 17
JJ
65 18 35
65 18 31
65 19 43
65 19 47
65 21 42
b5 19 47
6520 5
6s 20 11
M 20 18
M 50 50
6s 49 18
M49 2
65 31 23
M 50 24
.n
.so
120
.JO
* 30
.20
,20
.so
.
.50
1 1 s
.so
,so
,JO
.20
.20
,07
* 10
;30
.20
.20
,oS
.so
Lo5
,30
(a05
,JO
.a05
a
07
(.OS
.05
105
a05
-0s
(.OS
(10s
,05
.a
' a03
.
30
150
Is0
.30
.30
.30
-70
.70
.70
.70
.so
.so
.30
,OS
.20
.20
*20
.50
.lo
150
so
.so
I
..JO .so.so
.so .JO
20
.50
.50
.30
.30
.10
.34
I50
,50
.7O
IN
110
.50
.20
.30
.20
.70
.so
.so
.so
.so
134 .
.lo
.so
.50
win--Continued
fable 3. Results of analyses oi s t r e d i m t lupln-Continued
n
I
N
n
n
I
n
loo
150
1s
104
loo
50
loo
1 5 0
11
70
N
70
Table 3. -Its
LA385
La66
14401
LM03
LMW
of analyses of sttwa-wdirmt rupln--eolltinued
Tale 3. Results of analyses of strtu-Wiwt srples-htinued
70
200
1s
loo
300
loo
70
150
100
100
'
Slrple
Latitulk
Lonqitud,
kpct,
s
b-pct. Ca-pct.
5
I
Ti-pct.
I
I k - p p ~ Rq-ppm
s
s
As-~pa kppm
5
I
k-ppm
kppr
5
s
Tabla 3. Results of inaiyws of strears@diwnt~lpln--Continued
20
20
100
100
100
100
loo
I
I
W
100
100
20
20
ZQ
(ZPOW
loo
30
54
200
W
100
30
30
50
(200
100
100
1OQ
100
W
I
loo
100
Tible 3. Results of malysm of strelr-scdinnt urpln-Continucd
Lati t u k
Lanqitude
F r p c t,
Ca-pct.
Ti-pct.
5
s
5
17
7
6
32
40
147 28 39
147 28 0
147 S 8
141 3U 12
147 Sb 40
2.0
65 14 32
bsIb 3
65 16 5Q
65 13 52
bJ 13 24
117 42 33
147 41 8
147 1 55
147 S4 41
147 57 32
2.0
2mo
2.0
2.0
2. 0
65 14 50
bs 16 48
bS 19 20
43 43 35
65 45 29
147
147
147
147
117
54 55
SO 38
2.0
2.0
3.0
2.0
3.0
43 43
bJ 44
65 45
65 47
b5 48
147 2 5
146 56 50
146 49 14
146 44 0
146 58 51
4S 23
6522
6519
bJ 14
611 15
17
10
19
10
29
2.0
2.0
1.3
2.0
19 IS
13 S
I
b 50
65 49 47
65 19 34
65 21 30
65 21 27
65 21 10
116 34
146 47
146 34
144 36
146 37
bS 23 2l
611 23 22
3s 0
1m.5
2.0
3.0
3.0
39
3.0
2.0
2.0
2.0
10
1.0
6S 17 30
144 33 52
146 34 0
146 34 12
146 34 45
146 32 30
1.3
2.0
2.0
2.0
1.0
65 18 4
65 19 39
U33 0
653655
6s 22 40
144 50 Jb
146 SQ 16
147 47 34
147 Sl I 4
14610 S
1.0
2.0
5.0
1.5
65 20 19
63 20 13
6523 8
l4b 49 3
146 53 55
147 9 24
147 21 57
I47 27 45
.7
1.5
1.0
1.0
1mo
141 10 23
147 14 50
146 34 50
146 45 30
146 43 35
3mO
2.0
65 22 52
65 22 19
63 19 44
63543s
65 48
63 32
65 22
65 19
65 23
22
30
10
19
34
14
50
39
'
.s
2,o
1.5
1,s
I
100
loo
100
1 5 0
n 100
n
n
Tiblr 3. Results of analyses of strnrsedimt sapln-Continucd
Tale 3.
hits of vnalyu%of strersedimt saqln--Continued
Zr-ppa
rb-ppm
s
Y
Bi-ppr
1a
Tala 3. Results uf analyses of strtlr-wdimt w l a - a t i n u c d
Frpct.
Crpct.
Ti-pct.
J
s
5
1.3
1.0
1.5
.7
2,O
z0
2.0
2,0
1.5
2.0
1.5
1.5
2.0
1.5
2.0
2.0
1aO.
1.5
1.0
1.3
1.5
2.0
3.0
3.0
2.0
2.0
1.0
1.3
1.5
2.0
5.0
5,o
3.0
5.0
2,o
3.0
3.0
5.0
5.0
2.0
3.0
a*0
7.0
3.0
3.0
Table 3. Results of amalyws of strru-wdimt saapln-atinued
LW3
LAMS
-
L
UU6
LAM7 2
w
I
I
N
I
I
Table 3. Rmlts of analyses of strersedirmt supln--Continud
*-PPl
I
(100
a
(100
I
(100
100
130
200
< loa
(100
(100
{loo
(100
(100
I
(100
(1 OO
<loo
(100
150
(100
130
Is0
1%
100
100
150
(100
(100
150
200
100
(100
100
(100
100
100
(104
(100
(100
*la
btitude
Lmpitude
Fwt.
I)ypct,
S
J
k-pct,
Ti-pet,
S
S
L-ppm Ag-ppr
I
S
k-$pa
B-ppr
k-ppa
Wppm
S
S
5
I
Table 4. -Its
100
100
100
100
100
150
150
100
100
100
100
100
150
100
100
108
100
100
100
100
100
100
100
100
2'00
100
loo
loa
loo
100
of # a l y m oC the
nnus-80 frwtim of moss-trlp udirmt sawln-4ontinucd
Table 4. Results of l ~ l l y s nof the rims-80 fraction of ass-try Icdimmt sllpler--Continued
Latitude
Ti-pct.
s
C
s s s r e E E f S E r a % a i i s s s r s ~ n g fs f g h 5 g s r 2 r r a a a s u s s 3 " f
Y
L L L
C
L
I
z
YZEi5S
2
h h h
h
h
j!GGZf
---
Z o o u o
h
L - L L -
- w e - -
r r - w o -
orllosllo.
o . u m o o
uoooo
--
oooo*
€'.
I
,f
Table 4. Rrsults of mlym of the aimis-80 f r ~ t i aaf mss-tr* sediment vrpln-Xmtirmd
Cd- ppr
aa
1
.3
'4
.3
.2
.3
1.0
1.9
.I
.8
1.5
.8
.3
.S
*3
..Ib
1.1
.3
b.2
.5
2.2
.3
L; 3
.2
.1
.1
.9
1.5
1.3
.7
,5
.3
.S
1.b
.5
.I
1.2
.b
.5
.7
.5
.b
-6
.1
-..
Tablr 4. Results of nalysn of the rinus-80 fraction of ass-trw sedimt -1~--Continued
Tllr 4. Results of nrlyrn of the aims-80 fraction ot ms-blp wdirmt raplcs-Xmtinued
*
Tale 4. Rnults of v r a l y l n of the minus-80 fraction of ms-trap sdirmt saqles--Cattimed
.so
300
.50
500
200
.so
.50
J00
as0
500'
.I
I
I
, N
I
100
100
100
;lo0
loo
Table 4. Rmultr of lnalysn of the 8inus-80 f r ~ t i o nof mss-trlp srdimt supln-Xmtinuad
200
200
loo
loo
150
100
100
W
100
100
100
100
100
(100
150
100
150
100
150
loo
loo
108
50
150
loo
108
150
100
100
100
Latitude
Tale 4. Rnultr of analyses of the rinus-M fraction of mss-trap sdimt saqln-Xatinued
ST-ppr
Vwm
s
s
(loo
100
(100
70
100
(100
100
150
150
150
V-ppr
s
20
13
15
20
20
Zn-ppr
s
w
4s-ppr
J
Y
500
W .
I
I
I
Zr-ppr
300
50
-
150
200
10
(10
-10
10
Bi-ppr
aa
Cd-ppr
li
Sb-ppr
aa
w
(. 1
W
II
(.
1
-
M
--
II
I
.9
N
75
.3
M
50
--
Zn-ppr
aa
15
20
--
Table 4. Results of analym of the rinus-80 friction uf ms-trap Wimt wrpln-4htinued
Table I . Rmlts of mrlyws uf thr umu-80 fraction 3 ms-ttlp srdirrnt ulpln-atinud
Table 4. Results at vdy~tsof the minus+
frwtim d am-trq sdirmt suplrs-4mtimrrd
-a
Tllr 4. Rnults of ualpn of the aims-80 fraction of mr-trlp sdirmt sarpln--Contirmrd
-18
Latitude
L
Table 4. Results of lnalysn of the minus-80 fraction of ms-trlp udimt wlpln--Cmtimrel
Lrppr
5
Tabla 4. bits Qf YIIIIYSJ
of tbe rinur-l fraction of ass-trlp ~Cdimtsaqles-Cmtiwd
Lati tudr
Loyi tude
65 23 37
a n 31
6s 20 27
65 20 52
6535 7
147 26 19
I47 23 44
147 34 20
147 34 41
147 4 10
bS3bn
b5 34 53
65 37 43
65 n $4
U 28 32
147 10 2
147 15 35
147 12 20
147 11 49
147 32 14
65 a 19
6528 9
147 34 25
147 32
147 39 20
147 47 20
147 52 20
b52sf8
65 22 14
bS 23 52
0 5 0
.70
-70
*so
.50
200
300
W
I
500
W
(.5
c.5
300
3+
100
70
70
100
loo
500
300
200
700
500
1.0
1.0
1.0
1.0
3.0
Table 4.
Results of
v l a l y s n of
the minus-@ frwtim oC #rs-trrp sclimt sarplel-4ntinucd
150
150
1%
100
{too
100
loo
150
100
100
30
100
W
I
20
1
50
.
I
N
I
500
10 '
N
4
700
I
.Z
500
10
10
300
200
10
20
W
I
*. 1
.3
,b
,3
N
N
N
N
W
Table 4. Rnvlts of nilysn of the minus-80 fraction of moss-trap ldirmt supln-Cmtimd
Table 4. Results of analyses of the minus-60 fraction
of moss-trlp Wdimnt nrpln--Cmtinurd
Table 5. Results of r a l y m
u01111
LMlfll
UOlI
LAQ1SI)
LkOll
10
10
10
1s
10
N
10
I
20
1s
I
1
(20
I
20
I
w
I
N
20
50
10
20
20
20
M
I
M
w
~mm
7
20
LAO2411
L1102SN
~1102~
5
7
LYZB~
IS
10
10
w
W
W
uann
rirms-l frattion PC ms-trap ~sdimtsaqln-4mtirmcd
w
20
20
30
usnn
plus*
I
(20
UOZZlr
thr
20
I20
10
10
7
10
LM1m
Lmon
af
w
w
n
I
I
I
I
20
30
(20
I
I
I
(20
20
I
w
w
I
I
'
n
I
w
20
30
20
20
20
20
1s
n
20
1
-1s
M.
1
15
20
30
10
I
.20
I
30
20
20
1s
20
n
I
n
10
10
10
10
n
n
7
N
10
10
10
10
w
aao
M
Is0
100
n
loo loo
(10
100 100
(100
70
100 100
(loo so
20
20
1
w
1
(10
I
10
I
w
n
W
w
w
Y
30
30
20
20
30
50
w
10
I
(10
I
10
1
I
I
10
10
10
t
10
20
20
W
w
I
zo
I
10
15
W
(loo too
1s
n
20
I
100
100
70
20
20
I
150
20
20
(100 30
(100 70
(100 100
70
N
150
(20
200
4 3 0 9
30
IS
(10
'13
M
20
7
7
10
10
20
loo loo
n
w
20
(100 110
I 100
H
7
1s
(100 100
(100 100
1s
20
N
1
1
100
100
100
100
100
100
100
100
100
JJO
100
150
R
100
I
150
I 3 0 0
10
W
100
(100
n . (100
n (100
M
100
100
loo
150
100
100
:
Table 3, Rwlts 04 m d y w of the plus*
rims-l fraction of mss-trw srdirent ~rqlm-Cmtinuld
(100
(100
100
70
50
loo
100
100
(100
70
Talr 5 llrwllts 3 -1-
04 tbe plus90 umr-34 hrtm d ass-tr+ Wrat q l e s - h t i d
Latitude
200
I
J00
'70
70
100
1,m
Joa
1
1
. 100
loo
n
loo
1 5 0
1
JO
1
loo
a
loo
1
100
5
.(.5
150
200
150
100
150
(.5
(.5
.5
TdIr 5. Rrurits uf wlalysa of the plus*
latitude
minus-SO fraction nf ass-trap wdirat liqln-4ontimd
10
20
50
15
so
20
20
20
1s
30
(20
za
30
30
I
(S
(20
(20
20
(S
I
10
(3
70
(5
5
(5,
5
I
50
zo
W
(20
50
.20
10
20
-20
N
W
II
I
1
20
30
50
24
10
15
10
30
SO
1
(20
70
30
30
so
w
20
20
I
20
a
I
ca
I
M
I
I
50
50
50
50
50
30
20
so
20
30
.20
a
H
w
n
1
30
n
20
1
1
20
lo
1s
10
10
lo
w
100
loo
20
30
n
150
I
1%
1200
1 100
ciao 200
20
20
20
1
(200
20
N
100
N
H
200150
20
20
20
20
(200
I
(100 100
(loo 100
1 1
3
100
70
100
I
n
n
1
n
(loo
W
I
1
10
10
7
7
15
W
10
D
1
1
I
108
100
(100
(100
N
100
I
w
1s
W
I
10
10
a
1s
n
n
300
loo
w
1
W
100
100
roo
loo
i
Tab11 5, Rnults of v r l y ~ nof the plus-80 rinus-30 fraction rd mi-trq wdimt sample-atinuld
Lati tudc
l.Mm
m
1
n
U65111
u653n
bs 2h 41
65 29 19
Lunn
bSms9
65 50 30
65 29 56
lmm
6534s2
1116fM
b5nn
LI#SIII
L#58n
65 17 17
6s 21 10
65 25 25
UdJPll
usloll
UMn
65 23 17
b522 7
6519 6
L#)3n
U5Ull
6S 14 32
bS 1s 44
UM5n
LWM
65 14 32
65 16 3
U lb 50
65 1S 52
b5 13 24
mln
m
7
n
UMBll
m9n
LllMOll
65 14 30
65 16 I
U9521t
65 19 20
k5 23 27
65 23 22
mln
U56M-
m m.-
Ism
-#I
UL0511
w
7
1
1
Wldn
LlY1In
W13n
UblM
Wl7N
Ulen
652252
b5 22 19
a35 9
&a1
6s 19 b
6323 8
6515 1
U 50 35
65 32 30
65 22 10
UU3n
W4n
#a58
U62M
6s 33 57
bS 34 30
L
4
6
m
11163111
65 33 41
65 31 41
65
16
m
u
65 31 41
65 31 5
ULm
wnn
U630W
wnn
65 27 13
45 32 38
n
1
1
1
la0
w
100
10
70
too
1
loo
70
150,
150
100
\
70
50
70
70
;70
(100
50
(100
70
(loo
70
I 100
(100
loo
Lati tudr
65 23 57
b~
n 31
6Smn
65 20 52
65a 7
bS Sh 29
bJfbs3
b5 37 43
B
34
bS 28 32
n
65 28 19
6528 9
bszffs
65 22 14
65 23 52
6S 26 50
65 27 52
bS 29 47
bS 37 9
a38 0
65 10 32
b5 45 30
654456
65 44 57
6S 42 49
65 44 53
654430
65 41 IS
bJ405P
6543 5
bS4420
65 43 17
a3934
6537 2
b542 B
65 42 19
6s 43 59
653048
65 22 30
u n is
65 19 51
65 19 31
65 17 4B
b5 49 4s
b5 46 26
(100
100
H
Clod
loo
w
100
100
500
150
100
100
I
100
loo
100
200
100
n
1
Table 5. Rmlts of iindym
the plus-00 rims-50 frwtion of WSS-trip wliamt uqln--Cmtinurd
TJlr X Rnrlts ~4 analyws oC thr plus-BO inus-30 frrctirm of mr-trap sdimt ~wpln-Cmtinucd
LA^
M70311
u7w
u70m
10
10
7
s
30
30
30
I
(20
I
M
w
n
I20
w
w
20
30
20
n
lo
w
(loo roo
za
ZQ
W
10
W
100
20
11
N
w
n
lo
loo
loo
~
7
I
N
70
20
20
100
150
2 0 0
10
20
10
n
(100
H
150
za
=
T31r 6. h l t r of walywr of kvy-aimrPs#rmtratr mpln
fl, not d t t ~ t d ;(, dtt~tedbut kla the lirit of ktsrinatior Jim; ),determined t o br !perter than the value
0, virlble plll &served i n the nm-ugnltic warate adlor in thr pnnrd-concmtrate i n the field.]
-lc
Latitude Lqituik
Fmct.
Ilg-pct.
kcpct.
s
s
s
Ti-pct.
I
bppr
4-ppm
Ih-ppr
C-ppr
B-ppr
s
s
5
s
s
Latitude
Tab11 6. Results of nalm of hnvy-ainwal-ca~cmtratrSmIn-Cmtinud
UIW
U13bC
~1571:
u13#:
(2
(2
U1142C
(2
n
n
I
(50
r
70
la
100
70
50
300
I
200
100
74
w
I
n
u
so
I
I
(SO
14
I
u
II
roo
100
70
50
30
so
50
50
50
70
200
100
300
I
I
200
w
1
s
I
H
70
IOQ
50
50
300
I
I
too
100
(10
JI
(20
100
!
Zn- ppr
s
Table 6. Rrmltl of analyses of havy-rimrd~o~atrate
mrplcs-*timed
bpr
s
(20
1JO
100
106
so
300
100
70
70
100
100
100
100
100
loo
100
20
30
70
70
50
150
100
100
150
100
50
-
20
100
70
20
70
50
(20
(20
(20
20
20
30
20
20
30
30
70
50
Co-ppl
k-ppn
5
4
Cu-ppa
Lrppn
Ib-ppm
b-ppm
Hi-ppa
s
I
9
5
s
1
s
-It
LMZU
m25C
W2bC
LM27c
LMZBI:
W61C
lMbX
LMMC
LMbX
LMUC
Latitude L a q i t u k F ~ p c t . HIJ-pt. k-pct.
I
I
s
Ti-pct.
lh-tpm
hq-ppm
Ik-ppm
Au-ppr
E-ppm
kqpm
s
s
s
s
s
s
s
-.
I
W
I
Y
I
100
70
loo
1
N
W
I
w
I(
70
70
1
(50
too
50
I
N
(10
H
W
Tale 6. Rml ts of n a l ysn of h ~ v y - m i n e r a l - r o n c a t r a t*In--CmtiM#l
~
tn-ppr
5
k-ppm
Au-ppn
s
s
b*
s
70
(20
3
100
1%
so
no
30
+
260
1w
70
50
JO
,
70
70
70
50
50
70
loa
w
I
I
I
200
w
20d
I
w
Zoo
H
2.0
I
100
I
1 1,m
1346
700
500
1 2 0
I
I
I
loo
I
200
I
I
20
I
loo
JO