台灣西南海岸平原環境變遷後續研究─(子計畫四)台灣西南海岸岩心沈積物之穩定硫同位素研究(II)
Other Title
Preliminary Study of Stable Sulfur Isotope Analysis in Coastal
Sedimentary Environment Evolution of Southwestern Taiwan
Sedimentary Environment Evolution of Southwestern Taiwan
Date Issued
1999
Date
1999
Author(s)
DOI
882116M002015
Abstract
This study selected the Yihju core as
target for stable sulfur isotope analysis. Our
result demonstrates that in average the
inorganic sulfur concentrations in the
sediments above -100m are significant higher
than of the below. This is probably resulted
from the Holocene transgression. From the
sedimentary environmental study, we know
that between –40m and –60m is a lagoon
environment, and the highest inorganic sulfur
isotopic value can prove this conclusion.
Among lower core, we found another interval
with higher inorganic concentration; it is around depths of -180m and -190m,
respectively. Also, a lighter signal of sulfur
isotope was found at depth of -190m. These
suggest there was a transgressional event
happened between depths of -170m and -200m.
For the organic sulfur analysis, we
found two very light sulfur isotopic values
at –60m and -190m. This proves that there
are transgressional events indeed occurred at
that time.
Subjects
Yihju Core
Stable Sulfur Isotope
Holocene Transgression
Publisher
臺北市：國立臺灣大學地質科學系暨研究所
Type
report
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