Capo RC DePaolo Donald J 1990 (Table 1) Trace element concentrations and Sr isotope ratios of carbonates dataset https://doi.org/10.1594/PANGAEA.772140 Capo RC DePaolo Donald J 1990 Seawater Strontium isotopic variations from 2.5 million years ago to the present journal article Science 249(4964) https://doi.org/10.1126/science.249.4964.51 51-55 Measurements of marine carbonate samples indicate that during the past 2.5 million years the 87Sr/86Sr ratio of seawater has increased by 14 * 10**-5. The high average rate of increase of 87Sr/86Sr indicates that continental weathering rates were exceptionally high. Nonuniformity in the rate of increase suggests that weathering rates fluctuated by as much as ±30 percent of present-day values. Some of the observed shifts in weathering rates are contemporaneous with climatic changes inferred from records of oxygen isotopes and carbonate preservation in deep sea sediments. 156.1 -156.1 -31.167 20.33 168.4259166666667 -11.637333333333336 1971-05-08T00:00:00 1982-12-15T00:00:00 0.0 107.0 DSDP Deep Sea Drilling Project https://www.deepseadrilling.org/ Deep Sea Drilling Project DSDP 90-590 -31.167 163.3585 South Pacific/Tasman Sea/CONT RISE -1299.0 1982-12-15T00:00:00 Leg90 Leg90 1982-12-02T00:00:00 1982-12-02 1983-01-08T00:00:00 1983-01-08 Glomar Challenger https://www-odp.tamu.edu:443/glomar.html von der Borch, Christopher C von der Borch, Christopher C Kennett, James P Kennett, James P doi:10.2973/dsdp.proc.90.1986 Glomar Challenger https://www-odp.tamu.edu:443/glomar.html Drilling/drill rig DRILL 26.2 m 26.4 m 3 cores; 26.2 m cored; 0 m drilled; 100.6 % recovery 90-590A -31.167 163.3585 South Pacific/Tasman Sea/CONT RISE -1299.0 1982-12-15T00:00:00 Leg90 Leg90 1982-12-02T00:00:00 1982-12-02 1983-01-08T00:00:00 1983-01-08 Glomar Challenger https://www-odp.tamu.edu:443/glomar.html von der Borch, Christopher C von der Borch, Christopher C Kennett, James P Kennett, James P doi:10.2973/dsdp.proc.90.1986 Glomar Challenger https://www-odp.tamu.edu:443/glomar.html Drilling/drill rig DRILL 280.8 m 225.1 m 26 cores; 245 m cored; 9.6 m drilled; 91.9 % recovery 90-590B -31.167 163.3585 South Pacific/Tasman Sea/CONT RISE -1299.0 1982-12-15T00:00:00 Leg90 Leg90 1982-12-02T00:00:00 1982-12-02 1983-01-08T00:00:00 1983-01-08 Glomar Challenger https://www-odp.tamu.edu:443/glomar.html von der Borch, Christopher C von der Borch, Christopher C Kennett, James P Kennett, James P doi:10.2973/dsdp.proc.90.1986 Glomar Challenger https://www-odp.tamu.edu:443/glomar.html Drilling/drill rig DRILL 499.1 m 464.6 m 53 cores; 499.1 m cored; 0 m drilled; 93.1 % recovery HC-170-5 2.33 156.1 Pacific/off Hawaii -150.0 Corer, submersible CSUB Position estimated, coral from a terrace, dated at 13.61 +/- 0.05 (radiocarbon) HC-287-6 20.33 -156.1 Pacific/off Hawaii -360.0 Corer, submersible CSUB Position estimated, coraline algae from a terrace, dated at 120 +/- 5 ka V28-238 1.017 160.48 -3120.0 1971-05-08T00:00:00 V28 V28 1970-06-27T00:00:00 1970-06-27 1971-11-11T00:00:00 1971-11-11 Vema https://en.wikipedia.org/wiki/SV_Mandalay Vema https://en.wikipedia.org/wiki/SV_Mandalay Piston corer PC 16.09 m 337 CC-BY-3.0 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/ Event label Event Event Sample code/label Sample label DSDP/ODP/IODP sample designation hdl:10013/epic.27914.d001 Smirnov Alexander 0000-0002-8208-1304 Sample label Sample comment Sample comment Smirnov Alexander 0000-0002-8208-1304 Sample comment DEPTH, sediment/rock Depth sed m depth http://purl.obolibrary.org/obo/PATO_0001595 sediment http://purl.obolibrary.org/obo/ENVO_00002007 rock Length L http://dbpedia.org/resource/Length Depth sed [m] Nannofossil zone Nannos zone Smirnov Alexander 0000-0002-8208-1304 Nannos zone AGE Age ka BP http://en.wikipedia.org/wiki/Kyr age http://purl.obolibrary.org/obo/PATO_0000011 Time T http://dbpedia.org/resource/Time Age [ka BP] Potassium K mg/kg potassium K Smirnov Alexander 0000-0002-8208-1304 K [mg/kg] Strontium Sr mg/kg strontium Smirnov Alexander 0000-0002-8208-1304 Sr [mg/kg] Rubidium-87/Strontium-86 ratio 87Rb/86Sr strontium-86 86Sr https://en.wikipedia.org/wiki/Isotopes_of_strontium ratio Smirnov Alexander 0000-0002-8208-1304 87Rb/86Sr Strontium-87/Strontium-86 ratio 87Sr/86Sr strontium-87 87Sr strontium-86 86Sr https://en.wikipedia.org/wiki/Isotopes_of_strontium ratio Smirnov Alexander 0000-0002-8208-1304 measured 87Sr/86Sr (measured) Strontium-87/Strontium-86 ratio, error 87Sr/86Sr e ± strontium-87 87Sr strontium-86 86Sr https://en.wikipedia.org/wiki/Isotopes_of_strontium Smirnov Alexander 0000-0002-8208-1304 measured, 2 sigma 87Sr/86Sr e [±] (measured, 2 sigma) Strontium-87/Strontium-86 ratio 87Sr/86Sr strontium-87 87Sr strontium-86 86Sr https://en.wikipedia.org/wiki/Isotopes_of_strontium ratio Smirnov Alexander 0000-0002-8208-1304 avereage 87Sr/86Sr (avereage) Strontium-87/Strontium-86 ratio, error 87Sr/86Sr e ± strontium-87 87Sr strontium-86 86Sr https://en.wikipedia.org/wiki/Isotopes_of_strontium Smirnov Alexander 0000-0002-8208-1304 avereage, 2 sigma 87Sr/86Sr e [±] (avereage, 2 sigma) supplement citable author22761 author40210 basis12 basis22 campaign212 campaign3372746 campaign3374961 campaign369 event12971 event12972 event12973 event21539 event2653155 event2653156 geocode1 geocode1599 geocode1600 geocode1601 geocode2205 geocode500000 geocode8128 inst41 journal14481 license101 method10655 method10905 method10974 method5059 param15398 param1666 param18011 param24668 param55953 param6099 param790 param81 pi40120 project4 ref35403 term1073131 term1073135 term20629 term20737 term2663825 term38263 term40134 term40663 term40739 term41056 term43863 term43975 term44325