Geological Rhythms and Cometary Impacts
Time-series analysis reveals two dominant, stable long-term periodicities approximately equal to 33 $\pm $ 3 and 260 $\pm $ 25 million years in the known series of geological and biological upheavals during the Phanerozoic Eon. Because the cycles of these episodes agree in period and phase with the...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 1984-12, Vol.226 (4681), p.1427-1431 |
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| container_issue | 4681 |
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| container_title | Science (American Association for the Advancement of Science) |
| container_volume | 226 |
| creator | Rampino, Michael R. Stothers, Richard B. |
| description | Time-series analysis reveals two dominant, stable long-term periodicities approximately equal to 33 $\pm $ 3 and 260 $\pm $ 25 million years in the known series of geological and biological upheavals during the Phanerozoic Eon. Because the cycles of these episodes agree in period and phase with the cycles of impact cratering on Earth, these results suggest that periodic comet impacts strongly influence global tectonism and biological evolution. These two periodicities could arise from interactions of the solar system with interstellar clouds as the solar system moves cyclically through the Galaxy. |
| doi_str_mv | 10.1126/science.226.4681.1427 |
| format | Article |
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Because the cycles of these episodes agree in period and phase with the cycles of impact cratering on Earth, these results suggest that periodic comet impacts strongly influence global tectonism and biological evolution. 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Because the cycles of these episodes agree in period and phase with the cycles of impact cratering on Earth, these results suggest that periodic comet impacts strongly influence global tectonism and biological evolution. These two periodicities could arise from interactions of the solar system with interstellar clouds as the solar system moves cyclically through the Galaxy.</description><subject>Analysis</subject><subject>Astronomy</subject><subject>Astrophysics</subject><subject>Comets</subject><subject>Cratering</subject><subject>Earth</subject><subject>Earth, ocean, space</subject><subject>Environmental aspects</subject><subject>Exact sciences and technology</subject><subject>Geological research</subject><subject>Geology</subject><subject>Geophysics</subject><subject>Impact craters</subject><subject>Interplanetary space</subject><subject>Periodicity</subject><subject>Plate tectonics</subject><subject>Sea level</subject><subject>Solar system</subject><subject>Solar systems</subject><subject>Spectral index</subject><subject>Tectonics</subject><subject>Time series</subject><issn>0036-8075</issn><issn>1095-9203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1984</creationdate><recordtype>article</recordtype><sourceid>CYI</sourceid><recordid>eNqN0luL00AUwPEgittd_QYqfZDtw5o6ZzLXx7VoLRQL3l6HyeSkmyWXOpOC--2d0GBXKFLyMJD5TSZw_knyGsgcgIr3wVXYOpxTKuZMKJgDo_JJMgGieaopyZ4mE0IykSoi-UVyGcI9IXFPZ8-TC5BSKa3VJJktsau7beVsPf1699DfNWFq22K66BrsrX-YrpqddX14kTwrbR3w5bheJT8-ffy--JyuN8vV4nadWgW0T2WpuBK5VCRnhIKiBUMAWzAmuGAEJKfACqRSl5ZzQBmXnBYFL_NcEceyq2R2-O7Od7_2GHrTVMFhXdsWu30wMstAa6kGef1fSRmlIDIR4c0Bbm2NpmrLrvfWbbFFb-uuxbKKr28zLqTWEPW7Ezo-BTaVO8Fn__Aoevzdb-0-BLP69uVcufl5rvywPFOq5fqxvDklXVfXuEUTZ7jYPNb8oJ3vQvBYmp2vmpiDAWKG_MyYn4n5mSE_M-QXz70ZZ7LPGyyOp8beIng7AhticqW3ravCX6dBArBhZK8OrLXBmrb3wYBWPPbMuZLH7fvQd_54i9BZ_PnsDxOJ8AI</recordid><startdate>19841221</startdate><enddate>19841221</enddate><creator>Rampino, Michael R.</creator><creator>Stothers, Richard B.</creator><general>The American Association for the Advancement of Science</general><general>American Association for the Advancement of Science</general><scope>CYE</scope><scope>CYI</scope><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8GL</scope><scope>IBG</scope><scope>IOV</scope><scope>ISN</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope></search><sort><creationdate>19841221</creationdate><title>Geological Rhythms and Cometary Impacts</title><author>Rampino, Michael R. ; Stothers, Richard B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a812t-7f8586b780b402182d4e11ad4465640175214de279fa551e7fa5b2dd5fbb80c43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1984</creationdate><topic>Analysis</topic><topic>Astronomy</topic><topic>Astrophysics</topic><topic>Comets</topic><topic>Cratering</topic><topic>Earth</topic><topic>Earth, ocean, space</topic><topic>Environmental aspects</topic><topic>Exact sciences and technology</topic><topic>Geological research</topic><topic>Geology</topic><topic>Geophysics</topic><topic>Impact craters</topic><topic>Interplanetary space</topic><topic>Periodicity</topic><topic>Plate tectonics</topic><topic>Sea level</topic><topic>Solar system</topic><topic>Solar systems</topic><topic>Spectral index</topic><topic>Tectonics</topic><topic>Time series</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rampino, Michael R.</creatorcontrib><creatorcontrib>Stothers, Richard B.</creatorcontrib><collection>NASA Scientific and Technical Information</collection><collection>NASA Technical Reports Server</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Gale In Context: High School</collection><collection>Gale In Context: Biography</collection><collection>Gale In Context: Opposing Viewpoints</collection><collection>Gale In Context: Canada</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Science (American Association for the Advancement of Science)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rampino, Michael R.</au><au>Stothers, Richard B.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Geological Rhythms and Cometary Impacts</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><addtitle>Science</addtitle><date>1984-12-21</date><risdate>1984</risdate><volume>226</volume><issue>4681</issue><spage>1427</spage><epage>1431</epage><pages>1427-1431</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><coden>SCIEAS</coden><abstract>Time-series analysis reveals two dominant, stable long-term periodicities approximately equal to 33 $\pm $ 3 and 260 $\pm $ 25 million years in the known series of geological and biological upheavals during the Phanerozoic Eon. 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| fulltext | fulltext |
| identifier | ISSN: 0036-8075 |
| ispartof | Science (American Association for the Advancement of Science), 1984-12, Vol.226 (4681), p.1427-1431 |
| issn | 0036-8075 1095-9203 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_733199784 |
| source | Science Magazine; Jstor Complete Legacy; NASA Technical Reports Server |
| subjects | Analysis Astronomy Astrophysics Comets Cratering Earth Earth, ocean, space Environmental aspects Exact sciences and technology Geological research Geology Geophysics Impact craters Interplanetary space Periodicity Plate tectonics Sea level Solar system Solar systems Spectral index Tectonics Time series |
| title | Geological Rhythms and Cometary Impacts |
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