DOI: 10.1306/09291515010
Scopus记录号: 2-s2.0-84961659647
论文题名: Cretaceous-Cenozoic burial and exhumation history of the Chukchi shelf, offshore Arctic Alaska
作者: Craddock W.H. ; Houseknecht D.W.
刊名: AAPG Bulletin
ISSN: 0149-1438
EISSN: 1558-9168
出版年: 2016
发表日期: 2016
卷: 100, 期: 1 起始页码: 63
结束页码: 100
语种: 英语
Scopus关键词: Apatite
; Atmospheric temperature
; Cooling
; Faulting
; Fission reactions
; Inverse problems
; Offshore oil wells
; Phosphate minerals
; Shells (structures)
; Surface properties
; Tectonics
; Apatite fission tracks
; Fission track ages
; Fold-and-thrust belts
; Near surface temperature
; Seismic reflection data
; Surface temperatures
; Transpressional deformation
; Vitrinite reflectance
; Oil field development
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Apatite fission track (AFT) and vitrinite reflectance data from five exploration wells and three seafloor cores illuminate the thermal history of the underexplored United States Chukchi shelf. On the northeastern shelf, Triassic strata in the Chevron 1 Diamond well record apatite annealing followed by cooling, possibly during the Triassic to Middle Jurassic, which is a thermal history likely related to Canada Basin rifting. Jurassic strata exhumed in the hanging wall of the frontal Herald Arch thrust fault record a history of probable Late Jurassic to Early Cretaceous structural burial in the Chukotka fold and thrust belt, followed by rapid exhumation to near-surface temperatures at 104 ± 30 Ma. This history of contractional tectonism is in good agreement with inherited fission track ages in low-thermal-maturity, Cretaceous-Cenozoic strata in the Chukchi foreland, providing complementary evidence for the timing of exhumation and suggesting a source-to-sink relationship. In the central Chukchi foreland, inverse modeling of reset AFT samples from the Shell 1 Klondike and Shell 1 Crackerjack wells reveals several tens of degrees of cooling from maximum paleo-temperatures, with maximum heating permissible at any time from about 100 to 50 Ma, and cooling persisting to as recent as 30 Ma. Similar histories are compatible with partially reset AFT samples from other Chukchi wells (Shell 1 Popcorn, Shell 1 Burger, and Chevron 1 Diamond) and are probable in light of regional geologic evidence. Given geologic context provided by regional seismic reflection data, we interpret these inverse models to reveal a Late Cretaceous episode of cyclical burial and erosion across the central Chukchi shelf, possibly partially overprinted by Cenozoic cooling related to decreasing surface temperatures. Regionally, we interpret this kinematic history to be reflective of moderate, transpressional deformation of the Chukchi shelf during the final phases of contractional tecto-nism in the Chukotkan orogen (lasting until -70 Ma), followed by renewed subsidence of the Chukchi shelf in the latest Cretaceous and Cenozoic. This history maintained modest thermal maturities at the base of the Brookian sequence across the Chukchi shelf, because large sediment volumes bypassed to adjacent depocenters. Therefore, the Chukchi shelf appears to be an area with the potential for widespread preservation of petroleum systems in the oil window. © 2016 US Geological Survey. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961659647&doi=10.1306%2f09291515010&partnerID=40&md5=55d21badf8267b42afde71393001f876
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13009
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
There are no files associated with this item.
Recommended Citation:
Craddock W.H.,Houseknecht D.W.. Cretaceous-Cenozoic burial and exhumation history of the Chukchi shelf, offshore Arctic Alaska[J]. AAPG Bulletin,2016-01-01,100(1)