Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B31821.1 |
Cretaceous strata at the west edge of the Canadian Rocky Mountains-A piggyback basin remnant of the Western Canada foreland basin | |
McMechan, M. E.1; Currie, L. D.1; Matthews, W. A.2; Sweet, A. R.1; Reyes, J.1 | |
2018-07-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2018 |
卷号 | 130页码:1216-1230 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Outliers of Cretaceous strata at the west edge of the Canadian Rocky Mountains, deposited 110 km west of the Western Canada foreland basin foredeep, provide the first direct evidence of a piggyback basin in the Canadian Cordillera and impart new in- sights on the stratigraphy, U-Pb detrital zircon provenance, burial history, and tectonic setting of this area. Three successions are preserved in down-dropped, fault-bounded slices along the Redwall fault: late Middle Albian to Upper Albian Blairmore Group mixed elastics and minor limestone deposited in floodplain and swamp environments; unnamed Cenomanian mixed elastic floodplain deposits; and an unnamed alluvial/fluvial conglomeratic unit dominated by proximal eastern-sourced pebble to cobble conglomer- ate of probable Coniacian to Santonian age. All units are in the oil window. Estimated maximum temperatures for Cenomanian strata are 115-135 degrees C. U-Pb detrital zircon ages indicate that Upper Cretaceous units were primarily recycled from Mesozoic and Upper Paleozoic strata. with minimal input from both older sedimentary and western sources. Blairmore strata overlapped an eroded Upper Jurassic-Lower Cretaceous orogenic wedge and appear to have been contiguous with the foredeep succession. Upper Cretaceous conglomerates were derived from highlands to the east formed by uplift along thrust faults. These sediments were deposited in a piggyback basin on the hinter- land side of the Simpson Pass and Bourgeau thrusts and were carried >70 km toward the foreland while being buried by an additional 4-5 km of sediment. The presence of this piggyback basin indicates a very low taper wedge with an extremely weak basal detachment. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437009200011 |
WOS关键词 | SOUTHEASTERN BRITISH-COLUMBIA ; TRACK ANNEALING KINETICS ; SOUTHERN KOOTENAY ARC ; TECTONIC IMPLICATIONS ; DETRITAL ZIRCONS ; VITRINITE REFLECTANCE ; NEIGHBORING REGIONS ; NORTH-AMERICA ; FORT-STEELE ; GEOCHRONOLOGY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25209 |
专题 | 地球科学 |
作者单位 | 1.Geol Survey Canada Calgary, Nat Resources Canada, 3303 33rd St NW, Calgary, AB T2L 2A7, Canada; 2.Univ Calgary, Dept Geosci, 2500 Univ Dr NW, Calgary, AB T2N 1N4, Canada |
推荐引用方式 GB/T 7714 | McMechan, M. E.,Currie, L. D.,Matthews, W. A.,et al. Cretaceous strata at the west edge of the Canadian Rocky Mountains-A piggyback basin remnant of the Western Canada foreland basin[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2018,130:1216-1230. |
APA | McMechan, M. E.,Currie, L. D.,Matthews, W. A.,Sweet, A. R.,&Reyes, J..(2018).Cretaceous strata at the west edge of the Canadian Rocky Mountains-A piggyback basin remnant of the Western Canada foreland basin.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,130,1216-1230. |
MLA | McMechan, M. E.,et al."Cretaceous strata at the west edge of the Canadian Rocky Mountains-A piggyback basin remnant of the Western Canada foreland basin".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 130(2018):1216-1230. |
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