气候变化领域集成服务门户(CCPortal): Age Constraints on Surface Deformation Recorded by Fossil Shorelines at Cape Range, Western Australia

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DOI	10.1130/B35564
	Age Constraints on Surface Deformation Recorded by Fossil Shorelines at Cape Range, Western Australia
	Sandstrom M.R.; O’Leary M.J.; Barham M.; Cai Y.; Troy Rasbury E.; Wooton K.M.; Raymo M.E.
发表日期	2021
ISSN	167606
起始页码	923
结束页码	938
卷号	133
英文摘要	Laterally continuous terraces along the western flank of Cape Range, Western Australia, record both past sea-level highstands and postdepositional vertical displacement. Four distinct fossil coral reef terraces extend nearly the entire length of the slowly uplifting anticlinal structure (∼100 km), enabling documentation of the timing and degree of deformation-induced elevation contamination of past sea-level estimates from fossil shorelines. Here, we present detailed elevations of the four terraces using differential global positioning system (DGPS) and airborne light detection and ranging (LiDAR) data sets, along with new ages for the three upper terraces. Geochemical dating using strontium isotope stratigraphy techniques revealed, from highest to lowest elevation: a late Miocene reef terrace, a late Pliocene shoreline, and a prominent mid-Pleistocene reef terrace (probably associated with the marine oxygen isotope stage 33–31 interglacial), along with a broad last interglacial (Eemian) reef terrace and lagoon, which terminate at the modern shoreline. Laterally variable elevation data integrated with newly defined ages for the terraces demonstrate a gradual and continuous relative deformation in the region that spans at least the last 6.5 m.y. and constrains the emergence of the Cape Range to sometime prior to the late Miocene. This data set also shows that the most recent interglacial shoreline has undergone <1.3 m of vertical warping, suggesting minimal deformation since deposition. By tracing relative uplift rates over multiple terraces for ∼100 km of coastline, we placed constraints on maximum relative sea level (RSL) for the older terraces. Most notably, we were able to place strict maximum RSL elevations of <+34 m on the Pliocene terrace and <+16.5 m on the midPleistocene terrace, with probable RSL being somewhat lower. © 2020 Geological Society of America
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184665
作者单位	Lamont-Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, New York, 10964, United States; School of Earth Sciences, The University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia; Centre for Exploration Targeting Curtin Node, School of Earth and Planetary Sciences, Curtin University, Perth, WA 6009, Australia; Department of Geosciences, Stony Brook University, Stony Brook, New York, 11794, United States
推荐引用方式 GB/T 7714	Sandstrom M.R.,O’Leary M.J.,Barham M.,et al. Age Constraints on Surface Deformation Recorded by Fossil Shorelines at Cape Range, Western Australia[J],2021,133.
APA	Sandstrom M.R..,O’Leary M.J..,Barham M..,Cai Y..,Troy Rasbury E..,...&Raymo M.E..(2021).Age Constraints on Surface Deformation Recorded by Fossil Shorelines at Cape Range, Western Australia.Bulletin of the Geological Society of America,133.
MLA	Sandstrom M.R.,et al."Age Constraints on Surface Deformation Recorded by Fossil Shorelines at Cape Range, Western Australia".Bulletin of the Geological Society of America 133(2021).