n Alas - Alaska Division of Geological & Geophysical Surveys - State ...

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~ bI8oO, (IN PERMIL)
~lqp~e 87.-8180 of quartz (QI versus 8l80 of
plagioclase (pl), relative to range of values for
unaltered trondhjemitic rock (shading). Circles, Cape
Pox; squeres, Prince of Wales Island; triangles,
Annette Island; hexagons, Gravina Esland. Size of
symbol is approximately 2r (f0.1 permil) analytical
uncertainty.
jeologrcal Society of America Bulletin, v. 94,
no. 5, p. 640-663..
Hutchison, W. W., Berg, H. C., and Okullteh, A. V.,
1979, Skeena River geologic mapr Geological
Survey of Canada Map 1385A, scale l:I,O@,O~~
Magaritz, Mordeckai, and Taylor, H. P., 1876, 0/ 0
and D/H studies along a 500 km traverse across
the Coast Range batholith and ita country rocks,
central Brttish Columbia: Canadian Journal of
Earth Sciences, v. 13, no. 11, p. 151161536.
O'Neil, Z R., and Taylor, H. P., Jr., 1967, The oxygen
isotope and cation exchange chemistry of
feldspars: American Mineralcgkt, v. 52, no. 9-
10, p. 1414-1437.
Taylor, H. P., Jr., 1968, lh oxygen isotope
geochemistry of Igneous rock81 Contributions to
Mineralogy and Petrology, v. 19, no. I, p. 1-71.
-1974, The apdllcation of oxygen and hydrogen
isotope studies to problems OF hydrothermal
alteratfan and ore deposition: Bconomlc
Geology, v. 69, no. 6, p. 843-883.
OISTANCE WEST OF COAST PLUTONIC COMPW BOVNOARY. IN KlLOMmRS
18 16
Figure @.-A 0 , 0 fractionation between w t z
and plagloclase & O 1 of maly~d samples v e m
distance of sample l&%lty west of Coast plutonic
complex boundary. Circles, Cape Pox; squares, Prince
of W8les Island; triangles, Annette Island; hexagons,
Gravim Island.
Taylor, 8. P., Jr., and Magaritz, Mordeckai, 1978,
Oxygen and hydrogen Isotope studtes of the
Cordilleran batholiths of western North America,
Robinson, 0. W., ed., Stable isotopes in the
earth sciences! New Zealand Department of
Scientific and lndustrial Research Bulletin, v.
220, p. 151-173.
{Figure 90 shows study areas discussed)
Pal '-' atd arrslgsis of the 03trad in
Quternarg sediment from M talcen near Icy Bay,
Gulf of Alaska
The Continental Shelf south of Icy Bay (area 1,
fig. 90; fig. 91) Is a region of contrasting offshore
sedimentation rates, ranging from mas of
nondepositlon near Cape Yakam to areas with
sedlmentation rates as high as 18 mrn per yr (Molnia
and others, 1980). I have examined the ostracode
faunas in four cores from this region (fig. 92) with
several goals in mlndz (1) To establish whether the
cores In the area of high sedimentation rates can be
correlatedl (2) to determine whether any climatic
cycles are evident thet are comparable to the high-
resolution onshore dendrochronology records; (3) to
determine the Holocene/Eleistocene boundary In the
core taken off Cape Yakataga; and (4) to estabbh