Hot fluids, burial metamorphism and thermal histories in the underthrust sediments at IODP 370 site C0023, Nankai Accretionary Complex
Hot fluids, burial metamorphism and thermal histories in the underthrust sediments at IODP 370 site C0023, Nankai Accretionary Complex
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南开增生杂岩 IODP 370 站点 C0023 逆冲沉积物中的热流体、埋藏变质作用和热历史
DOI:
10.1016/j.marpetgeo.2019.104080
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发表时间:
2020
影响因子:
4.2
通讯作者:
Hinrichs
中科院分区:
文献类型:
--
作者:
Bowden;Mohammed;Muirhead;Yamamoto;Kamiya;Okutsu;Hirose;Schubotz;Morono;Inagaki;Hinrichs
Drilling during International Ocean Discovery Program (IODP) Expedition 370 at Site C0023 encountered instances of hydrothermal mineralization from 775 to 1121 m 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 anhydride) 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 0.5–2 Myrs) need to be considered.
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影响因子:
2.9
作者:
A. Taira;I. Hill;J. Firth
通讯作者:
J. Firth
影响因子:
5.2
作者:
Patrizia Costa Pisani;M. Reshef;G. Moore
通讯作者:
G. Moore
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
D. MacKenzie;D. Craw
通讯作者:
D. Craw
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
A. Taira;J. Ashi;Nankai Trough
通讯作者:
Nankai Trough
影响因子:
5.3
作者:
A. Taira;J. Ashi
通讯作者:
J. Ashi