Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B32057.1 |
Astronomical pacing of relative sea level during Oceanic Anoxic Event 2: Preliminary studies of the expanded SH#1 Core, Utah, USA | |
Jones, Matthew M.1,6; Sageman, Bradley B.1; Oakes, Rosie L.2,5; Parker, Amanda L.3; Leckie, R. Mark3; Bralower, Timothy J.2; Sepulveda, Julio4; Fortiz, Victoria2 | |
2019-09-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN
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ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2019 |
卷号 | 131页码:1702-1722 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Proximal marine strata of the North American Western Interior Basin (WIB) preserve a rich record of biotic turnover during Oceanic Anoxic Event 2 (OAE2; ca. 94 Ma), a pronounced Late Cretaceous carbon cycle perturbation interpreted to reflect global warming, widespread hypoxia, and possible ocean acidification. To develop a more robust synthesis of paleobiologic and geochemical data sets spanning this Earth-life transition, we drilled the 131 m Smoky Hollow #1 Core (SH#1), on the Kaiparowits Plateau of southern Utah, USA, recovering the Cenomanian-Turonian Boundary (CTB) interval in the Tropic Shale Formation. A 17.5 m positive excursion in high-resolution bulk carbon isotope chemostratigraphy (delta C-13(org)) of SH#1 characterizes the most expanded OAE2 record recovered from the mid-latitudes of the WIB. Depleted values in a paired carbonate carbon isotope (delta C-13(org)) chemostratigraphy cyclically punctuate the OAE2 excursion. These depletions correspond to intervals in the core with a higher degree of carbonate diagenesis and correlate well to an existing sequence stratigraphic framework of flooding surfaces in the shoreface facies of the Markagunt Plateau (similar to 100 km west). We detect statistically significant evidence for astronomical cycles in the delta C-13(org), data set, imparted by diagenesis at flooding surfaces, and develop a floating astronomical time scale (ATS) for the study interval. Stable eccentricity cycles 405 k.y.) align with stratigraphic sequences and associated trends in sedimentation rate, and short eccentricity cycles (similar to 100 k.y.) pace nested parasequences. These results confirm an astronomical signal and, therefore, climatic forcing of relative sea level during OAE2 in the WIB. Furthermore, cross-basin correlation of the ATS and expanded delta(13)C( )chemostratigraphy of SH#1 suggests that these transgressive-regressive parasequences modulated siliciclastic sediment delivery in the seaway and contributed to deposition of prominent rhythmically bedded CTB units across the WIB, including the Bridge Creek Limestone. The presented approach to analysis of these proximal offshore siliciclastic facies links early diagenetic influences on chemostratigraphy to astronomically modulated sequence stratigraphic horizons, and helps to resolve rates of paleobiologic and paleoenvironmental change during a significant Mesozoic carbon cycle perturbation. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000483604100015 |
WOS关键词 | CENOMANIAN-TURONIAN BOUNDARY ; WESTERN INTERIOR SEAWAY ; SEQUENCE-STRATIGRAPHIC FRAMEWORK ; ISOTOPE STRATIGRAPHY ; NANNOFOSSIL PALEOECOLOGY ; BEDDING COUPLETS ; NORTH-AMERICA ; BOOK-CLIFFS ; TIME-SCALE ; CARBON |
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/186688 |
专题 | 地球科学 |
作者单位 | 1.Northwestern Univ, Dept Earth & Planetary Sci, 2145 Sheridan Rd, Evanston, IL 60208 USA; 2.Penn State Univ, Dept Geosci, 503 Deike Bldg, University Pk, PA 16802 USA; 3.Univ Massachusetts, Dept Geosci, 627 North Pleast St,233 Morrill Sci Ctr, Amherst, MA 01003 USA; 4.Univ Colorado, Inst Arctic & Alpine Res, Dept Geol Sci, Boulder, CO 80309 USA; 5.Drexel Univ, Acad Nat Sci, 1900 Benjamin Franklin Pkwy, Philadelphia, PA 19103 USA; 6.Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA |
推荐引用方式 GB/T 7714 | Jones, Matthew M.,Sageman, Bradley B.,Oakes, Rosie L.,et al. Astronomical pacing of relative sea level during Oceanic Anoxic Event 2: Preliminary studies of the expanded SH#1 Core, Utah, USA[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2019,131:1702-1722. |
APA | Jones, Matthew M..,Sageman, Bradley B..,Oakes, Rosie L..,Parker, Amanda L..,Leckie, R. Mark.,...&Fortiz, Victoria.(2019).Astronomical pacing of relative sea level during Oceanic Anoxic Event 2: Preliminary studies of the expanded SH#1 Core, Utah, USA.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,131,1702-1722. |
MLA | Jones, Matthew M.,et al."Astronomical pacing of relative sea level during Oceanic Anoxic Event 2: Preliminary studies of the expanded SH#1 Core, Utah, USA".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 131(2019):1702-1722. |
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