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| Titel |
Implications from vitrinite reflectance in two profiles of Coastal Range, Eastern Taiwan |
| VerfasserIn |
Chim Lih Kae, Loung-Yie Tsai, Chang Chung-Pai, Yen Horng-Yen, Jiun-Yee Yen, Liou Ying-San |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250074080
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| Zusammenfassung |
| Taiwan orogeny was formed by the oblique collision of Luzon arc with the Eurasian
continent. The collision started from north and propagated to south. The eroded sediments
from Taiwan Orogeny dispersed at adjacent fore arc basin areas. Clay mineralogy and illite
crystallinity measurements in Madagida section, southern coastal range indicate
illite/smectite decrease and illite crystallinity increase gradationally from old lower section to
young upper section. This phenomenon can not record the in-situ burial temperature only
reflect the materials being derived from Taiwan central range to adjacent basins. In this study,
we try to measure the mudstones samples collected from other sections in coastal
range. We chose two profile, Fengpin section and Loho section fore study. These
two sections located in northern and central coastal range respectively, 10 and 11
samples were collected for each section. Maceral and carbonaceous materials were
extracted do into pellet for measurements of vitrinite reflectance. We use vitrinite
reflectance to deduce the basin thermal history. Some sample strata also contain coalified
woods and can be analysed to constraint the in-situ burial thermal record. In Loho
section, the older Pliocene Fanshuliao Formation samples decrease gradationally to
younger whereas the Pleistocene Paliwan Formation samples increase gradationally
vitrinite reflectance upward. Beside the younger Pleistocene strata, the Lichi Mélange
and the normal sedimentary sequence Paliwan and Fanshuliao Formation revealed
significant variation in vitrinite reflectance. However in Fengpin section, we found two
significant vitrinite reflectance gaps, this two significant gaps imply evidence of faults.
The field geological structure measurement and Raman Spectrocopy carbonaceous
materials (RSCM) could be good constraints with the vitrinite reflectance data. |
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