气候变化领域集成服务门户(CCPortal): A new upper Paleogene to Neogene stratigraphy for Sarawak and Labuan in northwestern Borneo: Paleogeography of the eastern Sundaland margin

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DOI	10.1016/j.earscirev.2018.12.006
	A new upper Paleogene to Neogene stratigraphy for Sarawak and Labuan in northwestern Borneo: Paleogeography of the eastern Sundaland margin
	Hennig-Breitfeld J.; Breitfeld H.T.; Hall R.; BouDagher-Fadel M.; Thirlwall M.
发表日期	2019
ISSN	00128252
起始页码	1
结束页码	32
卷号	190
英文摘要	The Miri Zone in Sarawak contains thick Paleogene to Neogene sedimentary successions that extend offshore into the Sarawak Basin (Balingian and Central Luconia Provinces) and Sabah Basin. Exploration offshore has shown the Sarawak Basin in the South China Sea contains major hydrocarbon reservoirs. The sediments on land are age equivalents of the offshore successions and can be used to provide insights into their sedimentological and stratigraphic relations. However, because the rocks are found in mountainous regions covered by dense rainforest much of the stratigraphy in the Miri Zone is poorly known, as are timings and causes of major unconformities in the region that are essential for understanding the tectonic history, basin development, and sedimentary pathways. In this study we integrate fieldwork, U–Pb zircon dating, biostratigraphy, and light and heavy mineral analyses to present a revised stratigraphy for the region as well as paleogeographic maps, including major paleo-river systems for the main sedimentary basins. Rocks studied include parts of the Cretaceous to Eocene deep marine Rajang Group, fluvial to marginal marine sediments of the Oligocene to Early Miocene Tatau, Buan, Nyalau and Setap Shale Formations, and the Miocene sediments which are assigned to the Balingian, Begrih and Liang Formations in the Mukah-Balingian province, and the Belait Formation on Labuan. There is still much debate about the timings or even existence of some important unconformities offshore, such as the Middle Miocene Unconformity (MMU) and Deep Regional Unconformity (DRU). We propose to avoid the ambiguous time-based terminology that has been used for different events by different authors. Instead, our results from the on-land stratigraphy show two main unconformities in northern Sarawak; one at c. 37 Ma (Rajang Unconformity), marking the change from deep marine to fluvial – marginal marine sedimentation, and another one at c. 17 Ma (Nyalau Unconformity) which is related to widespread uplift in Borneo and changing river systems. © 2018 Elsevier B.V.
关键词	Balingian-Luconia Province Borneo Miri Zone Paleogeography Provenance Rajang Unconformity U-Pb zircon geochronology
英文关键词	geochronology; Paleogene; paleogeography; provenance; stratigraphy; unconformity; uranium-lead dating; zircon; Borneo; East Malaysia; Malaysia; Rajang Basin; Sarawak
语种	英语
来源期刊	Earth Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203448
作者单位	SE Asia Research Group, Department of Earth Sciences, Royal Holloway University of London, Egham, TW20 0EX, United Kingdom; Department of Earth Sciences, University College London, London, WC1H 0BT, United Kingdom; Department of Earth Sciences, Royal Holloway University of London, Egham, TW20 0EX, United Kingdom
推荐引用方式 GB/T 7714	Hennig-Breitfeld J.,Breitfeld H.T.,Hall R.,et al. A new upper Paleogene to Neogene stratigraphy for Sarawak and Labuan in northwestern Borneo: Paleogeography of the eastern Sundaland margin[J],2019,190.
APA	Hennig-Breitfeld J.,Breitfeld H.T.,Hall R.,BouDagher-Fadel M.,&Thirlwall M..(2019).A new upper Paleogene to Neogene stratigraphy for Sarawak and Labuan in northwestern Borneo: Paleogeography of the eastern Sundaland margin.Earth Science Reviews,190.
MLA	Hennig-Breitfeld J.,et al."A new upper Paleogene to Neogene stratigraphy for Sarawak and Labuan in northwestern Borneo: Paleogeography of the eastern Sundaland margin".Earth Science Reviews 190(2019).