Tufas record significant imprints of climate and tectonic activity over the past 600 ka: Evidence from a multi-story wedge in Northwest Africa

doi:10.1016/j.sedgeo.2024.106769

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	Tufas record significant imprints of climate and tectonic activity over the past 600 ka: Evidence from a multi-story wedge in Northwest Africa
	Azennoud, Khalil 1; Brahim, Yassine Ait 1; Baali, Abdennasser 2; Lechleitner, Franziska A.3,4; El Asmi, Hicham 5,6; Li, Xianglei 7; Edwards, R. Lawrence 8; Peros, Matthew 9
	2024-12-01
发表期刊	SEDIMENTARY GEOLOGY (IF:2.575[JCR-2017],2.93[5-Year])
ISSN	0037-0738
卷号	474 页码:28
通讯作者	Azennoud, Khalil(Khalil.azennoud@um6p.ma)
摘要	The Quaternary Period climatic oscillations, typically those driven by Milankovitch cycles, have significantly left profound imprints in the geological records. However, the potential of terrestrial archives, particularly tufa deposits, as archives for Quaternary climate remain relatively underexplored. This study aims to contribute to filling the gap in a data-scarce region (Northwest Africa) through investigating Middle Pleistocene to Holocene groundwater-fed tufa deposits, using fieldwork-based, process-oriented facies analysis and advanced 230 Th technique. Eight stratigraphic sections were measured, identifying thirteen sedimentary facies grouped into four facies associations representing specific depositional settings: (i) fluvio-lacustrine and palustrine tufa, (ii) barrage cascade tufa with buttresses, (iii) tufa in channels with pools, and (iv) tufa in shallow braided channels with free- flowing water. The depositional system comprises a single multi-story wedge of vertically and laterally stacked barrage-cascade dammed-area systems. Our Integrated analysis revealed significant tufa growth during MIS 14, with implications for a warm and humid MISs 15-13 'extra-long interglacial', consistent with multiple paleoclimate records. Such conditions would have supported late Acheulean hominin occupation and the emergence of Early Modern Humans in the region around 300 ka. The findings also highlight the possible impact of the Mid-Brunhes Event (MBE) on tufa deposition patterns, likely through CO2-climate feedbacks, underscoring the sensitivity of tufa records to global climatic changes. Moreover, the study outcomes suggest significant regional tectonic activity during the late Middle Pleistocene, causing counter-clockwise rotation and northward tilting of MIS 14 deposits. The associated seismic events may have modified the hydrogeological budget and, by extension, altered the balance between tufa aggradation and degradation. The rotation about the vertical axis suggests a bookshelf faulting mechanism driven by regional left-lateral strike-slip tectonics. Differential karstic dissolution and tectonic forces would have further contributed to deposit tilting. The study highlights the potential of tufa as a valuable terrestrial archive for understanding Quaternary climate dynamics and tectonic processes. Future research should aim to expand the chronological framework and further investigate the climatic and tectonic influences on tufa deposition in this data-scarce region. This can be achieved through additional 230 Th dating, high-resolution stable isotope measurements on microbialites, particularly focusing on the significance of the Mid-Brunhes Event (MBE) in Northwest Africa.
关键词	Multi-story wedge fluvial tufas Process-oriented facies analysis Climate and tectonics Pleistocene and Holocene Northwest Africa
DOI	10.1016/j.sedgeo.2024.106769
关键词[WOS]	SEA-SURFACE TEMPERATURE ; STRIKE-SLIP FAULTS ; MIDDLE ATLAS ; IBERIAN RANGE ; BLOCK ROTATION ; LATE PLEISTOCENE ; ATLANTIC OSCILLATION ; JEBEL IRHOUD ; MOROCCO ; RIVER
收录类别	SCI
语种	英语
资助项目	Leading House for the Middle East and North Africa (LH-MENA)[RPG-2022-17]
项目资助者	Leading House for the Middle East and North Africa (LH-MENA)
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:001361999400001
出版者	ELSEVIER
引用统计	正在获取...
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/24132
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Azennoud, Khalil
作者单位	1.Mohammed VI Polytech Univ, Int Water Res Inst, Benguerir, Morocco 2.Sidi Mohamed Ben Abdellah Univ, Fac Sci Dhar EL Mahraz, Lab Engn Electrochem Modelling & Environm, Fes, Morocco 3.Univ Bern, Dept Chem Biochem & Pharmaceut Sci, Bern, Switzerland 4.Univ Bern, Oeschger Ctr Climate Change Res, Bern, Switzerland 5.Sidi Mohamed Ben Abdellah Univ, Fac Sci Dhar EL Mahraz, Lab Geosci Environm & Associated Resources, Fes, Morocco 6.Sidi Mohamed Ben Abdellah Univ, Grad Normal Sch, Dept Biol Geol, Fes, Morocco 7.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China 8.Univ Minnesota, Dept Earth Sci, Minneapolis, MN 55455 USA 9.Bishops Univ, Dept Environm Studies & Geog, Quebec City, PQ, Canada
推荐引用方式 GB/T 7714	Azennoud, Khalil,Brahim, Yassine Ait,Baali, Abdennasser,et al. Tufas record significant imprints of climate and tectonic activity over the past 600 ka: Evidence from a multi-story wedge in Northwest Africa[J]. SEDIMENTARY GEOLOGY,2024,474:28.
APA	Azennoud, Khalil.,Brahim, Yassine Ait.,Baali, Abdennasser.,Lechleitner, Franziska A..,El Asmi, Hicham.,...&Peros, Matthew.(2024).Tufas record significant imprints of climate and tectonic activity over the past 600 ka: Evidence from a multi-story wedge in Northwest Africa.SEDIMENTARY GEOLOGY,474,28.
MLA	Azennoud, Khalil,et al."Tufas record significant imprints of climate and tectonic activity over the past 600 ka: Evidence from a multi-story wedge in Northwest Africa".SEDIMENTARY GEOLOGY 474(2024):28.