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Frisch, Konstantin; Voigt, Silke; Verestek, Verena; Appel, Erwin; Albert, Richard; Gerdes, Axel; Arndt, Iris; Raddatz, Jacek; Voigt, Thomas; Weber, Yuki; Batenburg, Sietske J (2019): Laser ablation Uranium-Lead dating of the Miocene alluvial-lacustrine Aktau succession in south-east Kazakhstan [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.906093, In supplement to: Frisch, K et al. (2019): Long‐Period Astronomical Forcing of Westerlies' Strength in Central Asia During Miocene Climate Cooling. Paleoceanography and Paleoclimatology, 34(11), 1784-1806, https://doi.org/10.1029/2019PA003642

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Abstract:
The Aktau succession is located at 44.03°N and 79.30°E in the Ili Basin, south-east Kazakhstan. The dataset contains measurement results from the Middle to early Late Miocene part of the succession (total height: 372 m, lowermost sample: 0.29 m, uppermost sample: 370.94 m). The laser ablation U-Pb data was aquired from thin sections in order to obtain radiometric ages of carbonates along the Aktau succession.
Keyword(s):
Aktau succession; Ili Basin; Laser ablation U-Pb dating
Further details:
Gerdes, Axel; Zeh, Armin (2009): Zircon formation versus zircon alteration — New insights from combined U–Pb and Lu–Hf in-situ LA-ICP-MS analyses, and consequences for the interpretation of Archean zircon from the Central Zone of the Limpopo Belt. Chemical Geology, 261(3-4), 230-243, https://doi.org/10.1016/j.chemgeo.2008.03.005
Stacey, John S; Kramers, Jan Dirk (1975): Approximation of terrestrial lead isotope evolution by a two-stage model. Earth and Planetary Science Letters, 26(2), 207-221, https://doi.org/10.1016/0012-821X(75)90088-6
Coverage:
Latitude: 44.030000 * Longitude: 79.300000
Event(s):
Aktau * Latitude: 44.030000 * Longitude: 79.300000 * Transect length: 372 m * Location: Ili Basin, Kazakhstan * Method/Device: Outcrop sample (OUTCROP)
Comment:
Spot size = 213 µm; depth of crater ~15µm. ²⁰⁷Pb/²⁰⁶Pb error propagation (²⁰⁷Pb signal dependent) following Gerdes & Zeh (2009).
* Within run background-corrected mean ²⁰⁶Pb signal in cps (counts per second).
** U and Pb content and Th/U ratio were calculated relative to NIST614.
*** percentage of the common Pb on the ²⁰⁶Pb.
**** corrected for background, within-run Pb/U fractionation (in case of ²⁰⁶Pb/²³⁸U) and common Pb using Stacy and Kramers (1975) model Pb composition and subsequently normalised to GJ-1 (ID-TIMS value/measured value); ²⁰⁷Pb/²³⁵U calculated using ²⁰⁷Pb/²⁰⁶Pb/(²³⁸U/²⁰⁶Pb*1/137.88)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventFrisch, Konstantin
2Sample code/labelSample labelFrisch, KonstantinSample
3Sample code/labelSample labelFrisch, KonstantinStandard
4PositionPositionFrisch, KonstantinLA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometerLaser ablation spot
5Lead-206206PbcpsFrisch, KonstantinLA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometersee comment *
6UraniumUµg/kgFrisch, KonstantinLA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometerppb; see comment **
7LeadPbµg/kgFrisch, KonstantinLA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometerppb; see comment **
8Thorium/Uranium ratioTh/UFrisch, KonstantinLA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometersee comment **
9Common 206Pb in total 206Pbf206%Frisch, KonstantinLA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometer²⁰⁶Pb(c); see comment ***
10Uranium-238/Lead-206 ratio238U/206PbFrisch, KonstantinLA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometer
11Uranium-238/Lead-206, error, relative238U/206Pb e rel%Frisch, KonstantinLA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometer2 sigma
12Lead-207/Lead-206 ratio207Pb/206PbFrisch, KonstantinLA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometersee comment ****
13Lead-207/Lead-206, error, relative207Pb/206Pb e rel%Frisch, KonstantinLA-ICP-MS, Laser-ablation inductively coupled plasma mass spectrometer2 sigma
14Correlation coefficient, isotope ratio errorRhoFrisch, Konstantin²⁰⁶Pb/²³⁸U/²⁰⁷Pb/²³⁵U error correlation coefficient
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
3700 data points

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