台灣西部第三系之層序地層學研究（I）
Other Title
Sequence Stratigraphic Analysis of the Tertiary Strata in Western Taiwan (1)
Date Issued
1999
Date
1999
Author(s)
DOI
882116M002004
Abstract
In western Taiwan, Tertiary strata are widely
outcropped in the Hsueshan Range and Western
Foothills, and distributed in the subsurface geology of
the Coastal Plain and Taiwan Strait. They were
deposited in a coastal to shallow shelf environment.
Based on 3 outcrop sections and 3 electric well
logs, the facies of the Oligocene and lower Miocene
deepen and thicken westwards significantly. Those of
the middle-upper Miocene are generally the same
throughout the studied area. However, there is distinct
upper Miocene unconformity in central Taiwan. In
the outcrop sections, the Oligocene-lower Miocene
depositional sequences display 18 transgression-regression
cycles. In the well logs, the Miocene
depositional sequences display 12 T-R cycles.
Under the chronostratigraphic framework
delineated by available nannofossil/foraminer
biostratigraphic data, these sequences are well
correlated and appear to be consistent between
sections. The preliminary results suggest these
sequences could serve as detailed stratigraphic
divisions and correlation among these Tertiary strata.
It is worthy of further examination from more stratigraphic sections in different area to evaluate the
validity and practicability of this sequence
stratigraphic template.
Subjects
Western Taiwan
Tertiary
Sequence
Stratigraphy
Stratigraphy
Facies Change
Stratigraphic
Correlation
Correlation
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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