Abstract
| Original language | English |
|---|---|
| Article number | 104080 |
| Journal | Marine and Petroleum Geology |
| Volume | 112 |
| Early online date | 11 Oct 2019 |
| DOIs | |
| Publication status | E-pub ahead of print - 11 Oct 2019 |
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Keywords
- hot fluids
- biomarkers
- hydrothermal mineralization
- fluid inclusions
- IODP 370 temperature limits
- International Ocean Discovery Program
- Hot fluids
- Hydrothermal mineralization
- Biomarkers
- Fluid inclusions
ASJC Scopus subject areas
- Economic Geology
- Geology
- Geophysics
- Oceanography
- Stratigraphy
Cite this
Hot fluids, burial metamorphism and thermal histories in the underthrust sediments at IODP 370 site C0023, Nankai Accretionary Complex. / Tsang, Man-Yin; Bowden, Stephen A. (Corresponding Author); Wang, Zhibin; Mohammed, Abdalla; Tonai, Satoshi; Muirhead, David K.; Yang, Kiho; Yamamoto, Yuzuru; Kamiya, Nana; Okutsu, Natsumi; Hirose, Takehiro; Kars, Myriam; Schubotz, Florence; Ijiri, Akira; Yamada, Yasuhiro; Kubo, Yusuke; Morono, Yuki; Inagaki, Fumio; Heuer, Verena B.; Hinrichs, Kai-Uwe.
In: Marine and Petroleum Geology, Vol. 112, 104080, 02.2020.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Hot fluids, burial metamorphism and thermal histories in the underthrust sediments at IODP 370 site C0023, Nankai Accretionary Complex
AU - Tsang, Man-Yin
AU - Bowden, Stephen A.
AU - Wang, Zhibin
AU - Mohammed, Abdalla
AU - Tonai, Satoshi
AU - Muirhead, David K.
AU - Yang, Kiho
AU - Yamamoto, Yuzuru
AU - Kamiya, Nana
AU - Okutsu, Natsumi
AU - Hirose, Takehiro
AU - Kars, Myriam
AU - Schubotz, Florence
AU - Ijiri, Akira
AU - Yamada, Yasuhiro
AU - Kubo, Yusuke
AU - Morono, Yuki
AU - Inagaki, Fumio
AU - Heuer, Verena B.
AU - Hinrichs, Kai-Uwe
N1 - This research used samples and data provided by the International Ocean Discovery Program (IODP). The authors are grateful to the IODP and the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT). We thank crew, drilling team, geologists and lab technicians on D/V Chikyu and the staff of the Kochi Institute for Core Sample Research for supporting operations. This work was supported by the ECORD research grant [2017 to MYT]; and the NERC grant [NE/P015182/1 2017 to SAB]. ZW acknowledges technical support provided by Colin Taylor at the University of Aberdeen. Petromod 2017 was provided by Schlumberger. VBH and KUH acknowledge funding from the Deutsche Forschungsgemeinschaft through the Cluster of Excellence, The Ocean Floor – Earth’s Uncharted Interface“ and Project Grant HE8034/1-1 2019. This is a contribution to the Deep Carbon Observatory.
PY - 2019/10/11
Y1 - 2019/10/11
N2 - Drilling during International Ocean Discovery Program (IODP) Expedition 370 at Site C0023 encountered instances of hydrothermal mineralization from 775 to 1121 meters below seafloor. Fluid inclusion homogenization temperatures measured on barite veins within this interval indicate precipitation from fluids with temperatures up to 220 °C, and salinities ten times higher than interstitial water (16-25 c.f. 2.8-3.6 wt % NaCl). Patches of stratabound mineralization (rhodochrosite, calcite, barite and anhydrite) are largely confined to the vicinity of veins and have vertical thicknesses and extents that can be explained by precipitation within the thermal aureoles of veins. Thermal maturities measured on petroleum biomarkers in underthrust sediments record a rise from pre-oil window to early oil window thermal maturities. Basin models show that increases in thermal maturity can be explained by burial metamorphism, and kinetic-based calculations suggest that hot fluids would only have had a minimal effect on hydrocarbon generation. However, the movement of hot fluids still has geochemical implications and creates a complex thermal history where both short-duration, localized heating within fracture zones at hot temperatures (~ 200 °C for less than 1 yr) and heating during burial over long durations (80-110 °C for 0.5 to 2 Myrs) need to be considered.
AB - Drilling during International Ocean Discovery Program (IODP) Expedition 370 at Site C0023 encountered instances of hydrothermal mineralization from 775 to 1121 meters below seafloor. Fluid inclusion homogenization temperatures measured on barite veins within this interval indicate precipitation from fluids with temperatures up to 220 °C, and salinities ten times higher than interstitial water (16-25 c.f. 2.8-3.6 wt % NaCl). Patches of stratabound mineralization (rhodochrosite, calcite, barite and anhydrite) are largely confined to the vicinity of veins and have vertical thicknesses and extents that can be explained by precipitation within the thermal aureoles of veins. Thermal maturities measured on petroleum biomarkers in underthrust sediments record a rise from pre-oil window to early oil window thermal maturities. Basin models show that increases in thermal maturity can be explained by burial metamorphism, and kinetic-based calculations suggest that hot fluids would only have had a minimal effect on hydrocarbon generation. However, the movement of hot fluids still has geochemical implications and creates a complex thermal history where both short-duration, localized heating within fracture zones at hot temperatures (~ 200 °C for less than 1 yr) and heating during burial over long durations (80-110 °C for 0.5 to 2 Myrs) need to be considered.
KW - hot fluids
KW - biomarkers
KW - hydrothermal mineralization
KW - fluid inclusions
KW - IODP 370 temperature limits
KW - International Ocean Discovery Program
KW - Hot fluids
KW - Hydrothermal mineralization
KW - Biomarkers
KW - Fluid inclusions
UR - http://www.scopus.com/inward/record.url?scp=85073728687&partnerID=8YFLogxK
U2 - 10.1016/j.marpetgeo.2019.104080
DO - 10.1016/j.marpetgeo.2019.104080
M3 - Article
VL - 112
JO - Marine and Petroleum Geology
JF - Marine and Petroleum Geology
SN - 0264-8172
M1 - 104080
ER -