Large-scale mass wasting on the Miocene continental margin of western India
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1130/B35158.1 http://hdl.handle.net/11449/195099 |
Resumo: | A giant mass-transport complex was recently discovered in the eastern Arabian Sea, exceeding in volume all but one other known complex on passive margins worldwide. The complex, named the Nataraja Slide, was drilled by International Ocean Discovery Program (IODP) Expedition 355 in two locations where it is similar to 300 m (Site U1456) and similar to 200 m thick (Site U1457). The top of this mass-transport complex is defined by the presence of both reworked microfossil assemblages and deformation structures, such as folding and faulting. The deposit consists of two main phases of mass wasting, each consisting of smaller pulses, with generally fining-upward cycles, all emplaced just prior to 10.8 Ma based on biostratigraphy. The base of the deposit at each site is composed largely of matrix-supported carbonate breccia that is interpreted as the product of debris-flows. In the first phase, these breccias alternate with well-sorted calcar-enites deposited from a high-energy current, coherent limestone blocks that are derived directly from the Indian continental margin, and a few clastic mudstone beds. In the second phase, at the top of the deposit, muddy turbidites dominate and become increasingly more siliciclastic. At Site U1456, where both phases are seen, a 20-m section of hemipelagic mudstone is present, overlain by a similar to 40-m-thick section of calcarenite and slumped interbedded mud and siltstone. Bulk sediment geochemistry, heavy-mineral analysis, clay mineralogy, isotope geochemistry, and detrital zircon U-Pb ages constrain the provenance of the clastic, muddy material to being reworked, Indus-derived sediment, with input from western Indian rivers (e.g., Narmada and Tapti rivers), and some material from the Deccan Traps. The carbonate blocks found within the breccias are shallow-water limestones from the outer western Indian continental shelf, which was oversteepened from enhanced clastic sediment delivery during the mid-Miocene. The final emplacement of the material was likely related to seismicity as there are modern intraplate earthquakes close to the source of the slide. Although we hypothesize that this area is at low risk for future mass wasting events, it should be noted that other oversteepened continental margins around the world could be at risk for mass failure as large as the Nataraja Slide. |
id |
UNSP_314d9b41c9dd908632b6fd3b9771ccf7 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/195099 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Large-scale mass wasting on the Miocene continental margin of western IndiaA giant mass-transport complex was recently discovered in the eastern Arabian Sea, exceeding in volume all but one other known complex on passive margins worldwide. The complex, named the Nataraja Slide, was drilled by International Ocean Discovery Program (IODP) Expedition 355 in two locations where it is similar to 300 m (Site U1456) and similar to 200 m thick (Site U1457). The top of this mass-transport complex is defined by the presence of both reworked microfossil assemblages and deformation structures, such as folding and faulting. The deposit consists of two main phases of mass wasting, each consisting of smaller pulses, with generally fining-upward cycles, all emplaced just prior to 10.8 Ma based on biostratigraphy. The base of the deposit at each site is composed largely of matrix-supported carbonate breccia that is interpreted as the product of debris-flows. In the first phase, these breccias alternate with well-sorted calcar-enites deposited from a high-energy current, coherent limestone blocks that are derived directly from the Indian continental margin, and a few clastic mudstone beds. In the second phase, at the top of the deposit, muddy turbidites dominate and become increasingly more siliciclastic. At Site U1456, where both phases are seen, a 20-m section of hemipelagic mudstone is present, overlain by a similar to 40-m-thick section of calcarenite and slumped interbedded mud and siltstone. Bulk sediment geochemistry, heavy-mineral analysis, clay mineralogy, isotope geochemistry, and detrital zircon U-Pb ages constrain the provenance of the clastic, muddy material to being reworked, Indus-derived sediment, with input from western Indian rivers (e.g., Narmada and Tapti rivers), and some material from the Deccan Traps. The carbonate blocks found within the breccias are shallow-water limestones from the outer western Indian continental shelf, which was oversteepened from enhanced clastic sediment delivery during the mid-Miocene. The final emplacement of the material was likely related to seismicity as there are modern intraplate earthquakes close to the source of the slide. Although we hypothesize that this area is at low risk for future mass wasting events, it should be noted that other oversteepened continental margins around the world could be at risk for mass failure as large as the Nataraja Slide.Charles T. McCord Jr Chair in Petroleum Geology at Louisiana State UniversityMinistry of Earth Sciences, Government of IndiaNational Centre for Polar and Ocean Research (NCPOR)National Research Foundation of KoreaCSIR-National Institute of Oceanography, IndiaLouisiana State Univ, Dept Geol & Geophys, E253 Howe Russell Kniffen Geosci Complex, Baton Rouge, LA 70803 USATexas A&M Univ, Int Ocean Discovery Program, 1000 Discovery Dr, College Stn, TX 77845 USAWoods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USAUCL, Dept Earth Sci, Gower St, London WC1E 6BT, EnglandUniv Toulouse 3 Paul Sabatier, Geosci Environm Toulouse, 14 Ave Edouard Belin, F-31400 Toulouse, FranceGeoSep Serv, 1521 Pine Cone Rd, Moscow, ID 83843 USAUniv Queensland, Sch Earth & Environm Sci, St Lucia, Qld 4072, AustraliaNatl Ctr Polar & Ocean Res, Vasco Da Gama 403804, Goa, IndiaUniv Milano Bicocca, Dept Earth & Environm Sci, Piazza Sci 4, I-20126 Milan, ItalyPurdue Univ, Dept Earth Atmospher & Planetary Sci, 550 Stadium Mall Dr, W Lafayette, IN 47907 USAUniv Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, EnglandMacquarie Univ, Fac Sci & Engn, Dept Earth & Planetary Sci, N Ryde, NSW 2109, AustraliaOhio State Univ, Sch Earth Sci, 275 Mendenhall Lab,125 South Oval Mall, Columbus, OH 43210 USABirbal Sahni Inst Palaeosci, 53 Univ Rd, Lucknow 226007, Uttar Pradesh, IndiaUniv Bremen, MARUM, Leobener Str, D-28359 Bremen, GermanyKochi Univ, Dept Nat Environm Sci, 2-5-1 Akebono Cho, Kochi 7808520, JapanPusan Natl Univ, Div Earth Environm Syst, Busan 60973, South KoreaWadia Inst Himalayan Geol, 33 GMS Rd, Dehra Dun 248001, Uttrakhand, IndiaNatl Inst Ocean Technol, Marine Biotechnol Dept, Velacheiy Tambaram Main Rd, Chennai 600100, Tamil Nadu, IndiaColumbia Univ, Ctr Climate Syst Res, 2880 Broadway, New York, NY 10025 USANanjing Univ, Sch Geog & Oceanog Sci, 163 Xianlin Ave, Nanjing 210023, Jiangsu, Peoples R ChinaOregon State Univ, Coll Earth Ocean & Atmospher Sci, 104 CEOAS Adm Bldg, Corvallis, OR 97331 USANatl Ctr Earth Sci Studies, Geosci Div, Aakkulam Trivandrum 695031, IndiaNatl Inst Oceanog, Geol Oceanog Div, Panaji 403004, Goa, IndiaOil & Nat Gas Commiss, 11 High,Bandra Sion Link Rd, Mumbai 400017, Maharashtra, IndiaUniv Estadual Paulista, Inst Geociencias & Ciencias Exatas, 1515 Ave 24-A, BR-13506900 Rio Claro, SP, BrazilKumaun Univ, Dept Geol, Naini Tal 263002, IndiaBanaras Hindu Univ, Dept Geol, Varanasi 221005, Uttar Pradesh, IndiaXiamen Univ, Dept Geol Oceanog, Xiamen 361102, Fujian, Peoples R ChinaXiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361102, Fujian, Peoples R ChinaHokkaido Univ, Grad Sch Environm Sci, Kita Ku, N10W5, Sapporo, Hokkaido 0600810, JapanScripps Inst Oceanog, 9500 Gilman Dr, La Jolla, CA 92093 USAChinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R ChinaUniv Estadual Paulista, Inst Geociencias & Ciencias Exatas, 1515 Ave 24-A, BR-13506900 Rio Claro, SP, BrazilNational Centre for Polar and Ocean Research (NCPOR): 90/2018National Research Foundation of Korea: 2016R1A2B4008256National Research Foundation of Korea: 2019R1A2C1007701Geological Soc Amer, IncLouisiana State UnivTexas A&M UnivWoods Hole Oceanog InstUCLUniv Toulouse 3 Paul SabatierGeoSep ServUniv QueenslandNatl Ctr Polar & Ocean ResUniv Milano BicoccaPurdue UnivUniv BirminghamMacquarie UnivOhio State UnivBirbal Sahni Inst PalaeosciUniv BremenKochi UnivPusan Natl UnivWadia Inst Himalayan GeolNatl Inst Ocean TechnolColumbia UnivNanjing UnivOregon State UnivNatl Ctr Earth Sci StudiesNatl Inst OceanogOil & Nat Gas CommissUniversidade Estadual Paulista (Unesp)Kumaun UnivBanaras Hindu UnivXiamen UnivHokkaido UnivScripps Inst OceanogChinese Acad SciDailey, Sarah K.Clift, Peter D.Kulhanek, Denise K.Blusztajn, JerzyRoutledge, Claire M.Calves, GeromeO'Sullivan, PaulJonell, Tara N.Pandey, Dhananjai K.Ando, SergioColetti, GiovanniZhou, PengLi, YutingNeubeck, Nikki E.Bendle, James A. P.Aharonovich, SophiaGriffith, Elizabeth M.Gurumurthy, Gundiga P.Hahn, AnnetteIwai, MasaoKhim, Boo-KeunKumar, AnilKumar, A. GaneshLiddy, Hannah M.Lu, HuayuLyle, Mitchell W.Mishra, RaviRadhakrishna, TallavajhalaSaraswat, RajeevSaxena, RakeshScardia, Giancarlo [UNESP]Sharma, Girish K.Singh, Arun D.Steinke, StephanSuzuki, KentaTauxe, LisaTiwari, ManishXu, ZhaokaiYu, Zhaojie2020-12-10T17:04:36Z2020-12-10T17:04:36Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article85-112http://dx.doi.org/10.1130/B35158.1Geological Society Of America Bulletin. Boulder: Geological Soc Amer, Inc, v. 132, n. 1-2, p. 85-112, 2020.0016-7606http://hdl.handle.net/11449/19509910.1130/B35158.1WOS:000505809800006Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGeological Society Of America Bulletininfo:eu-repo/semantics/openAccess2021-10-23T05:01:58Zoai:repositorio.unesp.br:11449/195099Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:58:50.175211Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Large-scale mass wasting on the Miocene continental margin of western India |
title |
Large-scale mass wasting on the Miocene continental margin of western India |
spellingShingle |
Large-scale mass wasting on the Miocene continental margin of western India Dailey, Sarah K. |
title_short |
Large-scale mass wasting on the Miocene continental margin of western India |
title_full |
Large-scale mass wasting on the Miocene continental margin of western India |
title_fullStr |
Large-scale mass wasting on the Miocene continental margin of western India |
title_full_unstemmed |
Large-scale mass wasting on the Miocene continental margin of western India |
title_sort |
Large-scale mass wasting on the Miocene continental margin of western India |
author |
Dailey, Sarah K. |
author_facet |
Dailey, Sarah K. Clift, Peter D. Kulhanek, Denise K. Blusztajn, Jerzy Routledge, Claire M. Calves, Gerome O'Sullivan, Paul Jonell, Tara N. Pandey, Dhananjai K. Ando, Sergio Coletti, Giovanni Zhou, Peng Li, Yuting Neubeck, Nikki E. Bendle, James A. P. Aharonovich, Sophia Griffith, Elizabeth M. Gurumurthy, Gundiga P. Hahn, Annette Iwai, Masao Khim, Boo-Keun Kumar, Anil Kumar, A. Ganesh Liddy, Hannah M. Lu, Huayu Lyle, Mitchell W. Mishra, Ravi Radhakrishna, Tallavajhala Saraswat, Rajeev Saxena, Rakesh Scardia, Giancarlo [UNESP] Sharma, Girish K. Singh, Arun D. Steinke, Stephan Suzuki, Kenta Tauxe, Lisa Tiwari, Manish Xu, Zhaokai Yu, Zhaojie |
author_role |
author |
author2 |
Clift, Peter D. Kulhanek, Denise K. Blusztajn, Jerzy Routledge, Claire M. Calves, Gerome O'Sullivan, Paul Jonell, Tara N. Pandey, Dhananjai K. Ando, Sergio Coletti, Giovanni Zhou, Peng Li, Yuting Neubeck, Nikki E. Bendle, James A. P. Aharonovich, Sophia Griffith, Elizabeth M. Gurumurthy, Gundiga P. Hahn, Annette Iwai, Masao Khim, Boo-Keun Kumar, Anil Kumar, A. Ganesh Liddy, Hannah M. Lu, Huayu Lyle, Mitchell W. Mishra, Ravi Radhakrishna, Tallavajhala Saraswat, Rajeev Saxena, Rakesh Scardia, Giancarlo [UNESP] Sharma, Girish K. Singh, Arun D. Steinke, Stephan Suzuki, Kenta Tauxe, Lisa Tiwari, Manish Xu, Zhaokai Yu, Zhaojie |
author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Louisiana State Univ Texas A&M Univ Woods Hole Oceanog Inst UCL Univ Toulouse 3 Paul Sabatier GeoSep Serv Univ Queensland Natl Ctr Polar & Ocean Res Univ Milano Bicocca Purdue Univ Univ Birmingham Macquarie Univ Ohio State Univ Birbal Sahni Inst Palaeosci Univ Bremen Kochi Univ Pusan Natl Univ Wadia Inst Himalayan Geol Natl Inst Ocean Technol Columbia Univ Nanjing Univ Oregon State Univ Natl Ctr Earth Sci Studies Natl Inst Oceanog Oil & Nat Gas Commiss Universidade Estadual Paulista (Unesp) Kumaun Univ Banaras Hindu Univ Xiamen Univ Hokkaido Univ Scripps Inst Oceanog Chinese Acad Sci |
dc.contributor.author.fl_str_mv |
Dailey, Sarah K. Clift, Peter D. Kulhanek, Denise K. Blusztajn, Jerzy Routledge, Claire M. Calves, Gerome O'Sullivan, Paul Jonell, Tara N. Pandey, Dhananjai K. Ando, Sergio Coletti, Giovanni Zhou, Peng Li, Yuting Neubeck, Nikki E. Bendle, James A. P. Aharonovich, Sophia Griffith, Elizabeth M. Gurumurthy, Gundiga P. Hahn, Annette Iwai, Masao Khim, Boo-Keun Kumar, Anil Kumar, A. Ganesh Liddy, Hannah M. Lu, Huayu Lyle, Mitchell W. Mishra, Ravi Radhakrishna, Tallavajhala Saraswat, Rajeev Saxena, Rakesh Scardia, Giancarlo [UNESP] Sharma, Girish K. Singh, Arun D. Steinke, Stephan Suzuki, Kenta Tauxe, Lisa Tiwari, Manish Xu, Zhaokai Yu, Zhaojie |
description |
A giant mass-transport complex was recently discovered in the eastern Arabian Sea, exceeding in volume all but one other known complex on passive margins worldwide. The complex, named the Nataraja Slide, was drilled by International Ocean Discovery Program (IODP) Expedition 355 in two locations where it is similar to 300 m (Site U1456) and similar to 200 m thick (Site U1457). The top of this mass-transport complex is defined by the presence of both reworked microfossil assemblages and deformation structures, such as folding and faulting. The deposit consists of two main phases of mass wasting, each consisting of smaller pulses, with generally fining-upward cycles, all emplaced just prior to 10.8 Ma based on biostratigraphy. The base of the deposit at each site is composed largely of matrix-supported carbonate breccia that is interpreted as the product of debris-flows. In the first phase, these breccias alternate with well-sorted calcar-enites deposited from a high-energy current, coherent limestone blocks that are derived directly from the Indian continental margin, and a few clastic mudstone beds. In the second phase, at the top of the deposit, muddy turbidites dominate and become increasingly more siliciclastic. At Site U1456, where both phases are seen, a 20-m section of hemipelagic mudstone is present, overlain by a similar to 40-m-thick section of calcarenite and slumped interbedded mud and siltstone. Bulk sediment geochemistry, heavy-mineral analysis, clay mineralogy, isotope geochemistry, and detrital zircon U-Pb ages constrain the provenance of the clastic, muddy material to being reworked, Indus-derived sediment, with input from western Indian rivers (e.g., Narmada and Tapti rivers), and some material from the Deccan Traps. The carbonate blocks found within the breccias are shallow-water limestones from the outer western Indian continental shelf, which was oversteepened from enhanced clastic sediment delivery during the mid-Miocene. The final emplacement of the material was likely related to seismicity as there are modern intraplate earthquakes close to the source of the slide. Although we hypothesize that this area is at low risk for future mass wasting events, it should be noted that other oversteepened continental margins around the world could be at risk for mass failure as large as the Nataraja Slide. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-10T17:04:36Z 2020-12-10T17:04:36Z 2020-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1130/B35158.1 Geological Society Of America Bulletin. Boulder: Geological Soc Amer, Inc, v. 132, n. 1-2, p. 85-112, 2020. 0016-7606 http://hdl.handle.net/11449/195099 10.1130/B35158.1 WOS:000505809800006 |
url |
http://dx.doi.org/10.1130/B35158.1 http://hdl.handle.net/11449/195099 |
identifier_str_mv |
Geological Society Of America Bulletin. Boulder: Geological Soc Amer, Inc, v. 132, n. 1-2, p. 85-112, 2020. 0016-7606 10.1130/B35158.1 WOS:000505809800006 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Geological Society Of America Bulletin |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
85-112 |
dc.publisher.none.fl_str_mv |
Geological Soc Amer, Inc |
publisher.none.fl_str_mv |
Geological Soc Amer, Inc |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128443162820608 |