干旱区生态环境知识资源中心(Arid): Sedimentological and petrographic evolution of a fluvio-lacustrine environment during the onset of volcanism: Volcanically-induced forcing of sedimentation and environmental responses

Arid

DOI	10.1111/sed.12681
	Sedimentological and petrographic evolution of a fluvio-lacustrine environment during the onset of volcanism: Volcanically-induced forcing of sedimentation and environmental responses
	Di Capua, Andrea 1; Scasso, Roberto A.2
通讯作者	Di Capua, Andrea
来源期刊	SEDIMENTOLOGY
ISSN	0037-0746
EISSN	1365-3091
出版年	2020
卷号	67 期号:4 页码:1879-1913
英文摘要	This work focuses on the transition from the Las Leoneras to Lonco Trapial Formations, in the lower part of the Early Jurassic succession of the incipient rift phase of the Canadon Asfalto Basin (western part of Chubut Province - Patagonia, Argentina). Twenty lithofacies have been identified and grouped into seven facies associations on the basis of field characteristics (sedimentological and lithological) and optical microscope analysis, from two localities representing proximal and distal locations in the basin. The spatial relationship between all the lithofacies provided a four-dimensional reconstruction of the palaeoenvironmental evolution, showing how the original, clastic sedimentation in alluvial/fluvial and lake environments was modified by short-lived volcanic events during three volcanic cycles, and how the environment reacted after the input of huge amounts of volcaniclastics. Progradation of small deltas and subaqueous lobes, retrogradation caused by rising lake levels, and frequent erosion of valleys were typical processes in this environment. When explosive volcanism began, the original tectono-climatic control on sedimentation was replaced by the volcanic control, and the volcanically-forced sedimentation broke the equilibrium among production, delivery and accumulation of sediments. The nature of the volcanic eruptions and the different propensity of volcanic lithofacies to produce particles of different size and types (lithics, crystals and glass) are also analyzed. The role of volcanism in the production and transport of great volumes of sediments across sedimentary systems needs to be carefully re-examined, and the analysis on the variability in the composition of volcaniclastic deposits must take into account that volcaniclastic particle types may not simply reflect a linear deepening in the dissection of magmatic arcs through time but are often controlled by the style of the eruptions and the lithological variation of the volcanic products.
英文关键词	Forcing of sedimentation Jurassic Patagonia volcaniclastic petrology volcaniclastic sedimentation
类型	Article
语种	英语
国家	Italy ; Argentina
收录类别	SCI-E
WOS记录号	WOS:000535281600007
WOS关键词	PYROCLASTIC DENSITY CURRENTS ; SOUFRIERE HILLS VOLCANO ; LACUSTRINE RIFT-BASIN ; EXPLOSIVE VOLCANISM ; BREAK-UP ; SEQUENCE STRATIGRAPHY ; IGNIMBRITE ERUPTION ; ANTARCTIC PENINSULA ; EASTERN DESERT ; FLOW DEPOSITS
WOS类目	Geology
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318711
作者单位	1.CNR, Ist Geol Ambientale Geoingn, Sez Milano, 9,Via Mario Bianco, I-20131 Milan, Italy; 2.UBA, FCEN, CONICET, IGeBA,Dpto Cs Geol, Intendente Guiraldes 2160,Pabellon 2, RA-1428 Buenos Aires, DF, Argentina
推荐引用方式 GB/T 7714	Di Capua, Andrea,Scasso, Roberto A.. Sedimentological and petrographic evolution of a fluvio-lacustrine environment during the onset of volcanism: Volcanically-induced forcing of sedimentation and environmental responses[J],2020,67(4):1879-1913.
APA	Di Capua, Andrea,&Scasso, Roberto A..(2020).Sedimentological and petrographic evolution of a fluvio-lacustrine environment during the onset of volcanism: Volcanically-induced forcing of sedimentation and environmental responses.SEDIMENTOLOGY,67(4),1879-1913.
MLA	Di Capua, Andrea,et al."Sedimentological and petrographic evolution of a fluvio-lacustrine environment during the onset of volcanism: Volcanically-induced forcing of sedimentation and environmental responses".SEDIMENTOLOGY 67.4(2020):1879-1913.