| DOI: | 10.1306/09071111029
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| Scopus记录号: | 2-s2.0-84861595566
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| 论文题名: | Thermal evolution and maturation of lower Paleozoic source rocks in the Tarim Basin,Northwest China |
| 作者: | Qiu N.; Chang J.; Zuo Y.; Wang J.; Li H.
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| 刊名: | AAPG Bulletin
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| ISSN: | 0149-1770
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| EISSN: | 1558-9500
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| 出版年: | 2012
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| 发表日期: | 2012
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| 卷: | 96, 期:5 | | 起始页码: | 789
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| 结束页码: | 821
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| 语种: | 英语
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| Scopus关键词: | Apatite fission tracks
; Cambrians
; Cenozoic
; Differential maturation
; Early Paleozoic
; Foreland basin
; Gradient evolution
; Late Paleozoic
; Lower Paleozoic
; Mesozoic
; NorthWest China
; Oil and gas
; Oil and gas exploration
; Ordovician
; Paleozoic
; Petroleum exploration
; Significant impacts
; Source rocks
; Tarim Basin
; Thermal evolution
; Thermal history
; Thermal modeling
; Vitrinite reflectance
; Economic geology
; Energy resources
; Gypsum
; Helium
; Petroleum deposits
; Petroleum geology
; Phosphate minerals
; Rocks
; Silicate minerals
; Stratigraphy
; Thermal conductivity
; Thermal gradients
; Uranium
; Geochronology
; apatite
; fission track dating
; foreland basin
; gypsum
; hydrocarbon exploration
; Paleozoic
; source rock
; temperature gradient
; thermal evolution
; vitrinite reflectance
; zircon
; China
; Tarim Basin
; Xinjiang Uygur
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| Scopus学科分类: | Energy
; Earth and Planetary Sciences
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| 英文摘要: | The Tarim Basin is one of the richest basins in oil and gas resources in China. The Cambrian and Middle-Upper Ordovician strata are the most important source rocks. Previous early Paleozoic thermal histories have led to varied hypotheses on the evolution of the lower Paleozoic source rocks, causing a significant impact on petroleum exploration in the basin. A new Paleozoic thermal history of the Tarim Basin was reconstructed in this article using the integrated thermal indicators of apatite and zircon (uranium-thorium)/helium ages, apatite fission tracks, and equivalent vitrinite reflectance data. The modeled results indicate that different parts of the basin experienced widely differing early Paleozoic thermal gradient evolution. The eastern and central regions of the basin experienced a decreasing thermal gradient evolution from 37 to 39°C/km during the Cambrian and Ordovician to 35 to 36°C/km in the Silurian, whereas the northwestern region of the basin had an increasing early Paleozoic thermal gradient evolution from 28 to 32°C/km in the Cambrian to 30 to 34°C/km in the Ordovician and Silurian. The Lower Cambrian thermal gradient resulted from the higher thermal conductivity of the 800- to 1000-m (2625- to 3280-ft) thickness of gypsum and salt in the Cambrian strata. The basin experienced an intracratonic phase during the late Paleozoic and a foreland basin phase during the Mesozoic and Cenozoic, with the thermal gradient decreasing to the present-day value of 20 to 25°C/km. The sensitivity of thermal modeling by the best-fit method is less than ±5% in our study, and the differences of the early Paleozoic thermal gradient evolution in different regions of the basin may result in differential maturation of lower Paleozoic source rocks. The maturity histories of the source rocks, modeled based on the new thermal histories, indicate that the lower Paleozoic source rocks in most areas of the basin matured rapidly and reached the late mature to dry-gas stage during the Paleozoic but experienced slower maturation during the Mesozoic and Cenozoic. These new data on the Paleozoic thermal history and lower Paleozoic source rock maturity histories of the Tarim Basin provide new insights to guide oil and gas exploration of the basin. Copyright ©2012. The American Association of Petroleum Geologists. All rights reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84861595566&doi=10.1306%2f09071111029&partnerID=40&md5=56ea6b908e57b5c1aeb68003dce255a0
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/13340
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| Recommended Citation: | |
Qiu N.,Chang J.,Zuo Y.,et al. Thermal evolution and maturation of lower Paleozoic source rocks in the Tarim Basin,Northwest China[J]. AAPG Bulletin,2012-01-01,96(5)
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