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An extraterrestrial trigger for the mid-Ordovician ice age: Dust from the breakup of the L-chondrite parent body
Schmitz, Birger1; Farley, Kenneth A.2; Goderis, Steven3; Heck, Philipp R.4,5; Bergstrom, Stig M.6; Boschi, Samuele1; Claeys, Philippe7; Debaille, Vinciane8; Dronov, Andrei9,10; van Ginneken, Matthias11; Harper, David A. T.12; Iqbal, Faisal1; Friberg, Johan1; Liao, Shiyong13,14; Martin, Ellinor1; Meier, Matthias M. M.15,16; Peucker-Ehrenbrink, Bernhard17; Soens, Bastien; Wieler, Rainer15; Terfelt, Fredrik1
2019-09-01
Source PublicationSCIENCE ADVANCES
ISSN2375-2548
Volume5Issue:9Pages:10
Corresponding AuthorSchmitz, Birger(birger.schmitz@nuclear.lu.se)
AbstractThe breakup of the L-chondrite parent body in the asteroid belt 466 million years (Ma) ago still delivers almost a third of all meteorites falling on Earth. Our new extraterrestrial chromite and He-3 data for Ordovician sediments show that the breakup took place just at the onset of a major, eustatic sea level fall previously attributed to an Ordovician ice age. Shortly after the breakup, the flux to Earth of the most fine-grained, extraterrestrial material increased by three to four orders of magnitude. In the present stratosphere, extraterrestrial dust represents 1% of all the dust and has no climatic significance. Extraordinary amounts of dust in the entire inner solar system during >2 Ma following the L-chondrite breakup cooled Earth and triggered Ordovician icehouse conditions, sea level fall, and major faunal turnovers related to the Great Ordovician Biodiversification Event.
DOI10.1126/sciadv.aax4184
WOS KeywordASTEROID BREAKUP ; OXYGEN-ISOTOPE ; SPARGING OSO4 ; NOBLE-GASES ; BIODIVERSIFICATION ; RECORD ; EARTH ; CHEMOSTRATIGRAPHY ; MICROMETEORITES ; METEORITES
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000491128800054
PublisherAMER ASSOC ADVANCEMENT SCIENCE
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/28279
Collection中国科学院紫金山天文台
Corresponding AuthorSchmitz, Birger
Affiliation1.Lund Univ, Dept Phys, Astrogeobiol Lab, Lund, Sweden
2.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA
3.Vrije Univ Brussel, Dept Chem, Brussels, Belgium
4.Robert A Pritzker Ctr Meteorit & Polar Studies, Field Museum Nat Hist, Chicago, IL USA
5.Univ Chicago, Dept Geophys Sci, Chicago, IL USA
6.Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA
7.Vrije Univ Brussel, Analyt Environm & GeoChem, Brussels, Belgium
8.Univ Libre Bruxelles, Lab GTime, Brussels, Belgium
9.Russian Acad Sci, Geol Inst, Moscow, Russia
10.Kazan Volga Reg Fed Univ, Inst Geol & Oil & Gas Technol, Kazan, Russia
11.Royal Belgian Inst Nat Sci, Brussels, Belgium
12.Univ Durham, Dept Earth Sci, Durham, England
13.Chinese Acad Sci, Purple Mt Observ, Nanjing, Jiangsu, Peoples R China
14.CAS Ctr Excellence Comparat Planetol, Hefei, Anhui, Peoples R China
15.Swiss Fed Inst Technol, Dept Earth Sci, Zurich, Switzerland
16.Nat Museum St Gallen, St Gallen, Switzerland
17.Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA 02543 USA
Recommended Citation
GB/T 7714
Schmitz, Birger,Farley, Kenneth A.,Goderis, Steven,et al. An extraterrestrial trigger for the mid-Ordovician ice age: Dust from the breakup of the L-chondrite parent body[J]. SCIENCE ADVANCES,2019,5(9):10.
APA Schmitz, Birger.,Farley, Kenneth A..,Goderis, Steven.,Heck, Philipp R..,Bergstrom, Stig M..,...&Terfelt, Fredrik.(2019).An extraterrestrial trigger for the mid-Ordovician ice age: Dust from the breakup of the L-chondrite parent body.SCIENCE ADVANCES,5(9),10.
MLA Schmitz, Birger,et al."An extraterrestrial trigger for the mid-Ordovician ice age: Dust from the breakup of the L-chondrite parent body".SCIENCE ADVANCES 5.9(2019):10.
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