IsoplotR (version 0.18)

examples: Example datasets for testing IsoplotR

Description

U-Pb, Pb-Pb, Ar-Ar, Re-Os, Sm-Nd, Rb-Sr, Lu-Hf, U-Th-He, Th-U, fission track and detrital datasets

Details

examples an 18-item list containing:

UPb: an object of class UPb containing a high precision U-Pb dataset of Kamo et al. (1996) packaged with Ken Ludwig's Isoplot program.

PbPb: an object of class PbPb containing a Pb-Pb dataset from Connelley et al. (2017).

DZ: an object of class detrital containing a detrital zircon U-Pb dataset from Namibia (Vermeesch et al., 2015).

ArAr: an object of class ArAr containing a \(^{40}\)Ar/\(^{39}\)Ar spectrum of Skye basalt produced by Sarah Sherlock (Open University).

UThHe: an object of class UThHe containing a U-Th-Sm-He dataset of Fish Lake apatite produced by Daniel Stockli (UT Austin).

FT1: an object of class fissiontracks containing a synthetic external detector dataset.

FT2: an object of class fissiontracks containing a synthetic LA-ICP-MS-based fission track dataset using the zeta calibration method.

FT3: an object of class fissiontracks containing a synthetic LA-ICP-MS-based fission track dataset using the absolute dating approach.

ReOs: an object of class ReOs containing a \(^{187}\)Os/\(^{187}\)Re-dataset from Selby (2007).

SmNd: an object of class SmNd containing a \(^{143}\)Nd/\(^{147}\)Sm-dataset from Lugmair et al. (1975).

RbSr: an object of class RbSr containing an \(^{87}\)Rb/\(^{86}\)Sr-dataset from Compston et al. (1971).

LuHf: an object of class LuHf containing an \(^{176}\)Lu/\(^{177}\)Hf-dataset from Barfod et al. (2002).

ThU: an object of class ThU containing a synthetic `Osmond-type' dataset from Titterington and Ludwig (1994).

Namib: an object of class detritals containing a detrital zircon U-Pb dataset of Vermeesch and Garzanti (2015).

average: an object of class other containing the \(^{206}\)Pb/\(^{238}\)U-ages and errors of dataset UPb.

KDE: an object of class 'other' containing the \(^{206}\)Pb/\(^{238}\)U-ages (but not the errors) of dataset UPb.

spectrum: an object of class 'other' containing the \(^{39}\)Ar abundances, \(^{40}\)Ar/\(^{39}\)Ar-ages and errors of dataset ArAr.

MountTom: an object of class 'other' containing a dataset of dispersed zircon fission track ages from Brandon and Vance (1992).

References

Brandon, M.T. and Vance, J.A., 1992. Tectonic evolution of the Cenozoic Olympic subduction complex, Washington State, as deduced from fission track ages for detrial zircons. American Journal of Science, 292, pp.565-565.

Barfod, G.H., Albarede, F., Knoll, A.H., Xiao, S., Telouk, P., Frei, R. and Baker, J., 2002. New Lu-Hf and Pb-Pb age constraints on the earliest animal fossils. Earth and Planetary Science Letters, 201(1), pp.203-212.

Compston, W., Berry, H., Vernon, M.J., Chappell, B.W. and Kaye, M.J., 1971. Rubidium-strontium chronology and chemistry of lunar material from the Ocean of Storms. In Lunar and Planetary Science Conference Proceedings (Vol. 2, p. 1471).

Connelly, J.N., Bollard, J. and Bizzarro, M., 2017. Pb-Pb chronometry and the early Solar System. Geochimica et Cosmochimica Acta, 201, pp.345-363.

Galbraith, R. F. and Green, P. F., 1990: Estimating the component ages in a finite mixture, Nuclear Tracks and Radiation Measurements, 17, 197-206.

Kamo, S.L., Czamanske, G.K. and Krogh, T.E., 1996. A minimum U-Pb age for Siberian flood-basalt volcanism. Geochimica et Cosmochimica Acta, 60(18), 3505-3511.

Ludwig, K. R., and D. M. Titterington. "Calculation of \(^{230}\)Th/U isochrons, ages, and errors." Geochimica et Cosmochimica Acta 58.22 (1994): 5031-5042.

Ludwig, K. R., 2003. User's manual for Isoplot 3.00: a geochronological toolkit for Microsoft Excel. No. 4.

Lugmair, G.W., Scheinin, N.B. and Marti, K., 1975. Sm-Nd age and history of Apollo 17 basalt 75075-Evidence for early differentiation of the lunar exterior. In Lunar and Planetary Science Conference Proceedings (Vol. 6, pp. 1419-1429).

Selby, D., 2007. Direct Rhenium-Osmium age of the Oxfordian-Kimmeridgian boundary, Staffin bay, Isle of Skye, UK, and the Late Jurassic time scale. Norsk Geologisk Tidsskrift, 87(3), p.291.

Vermeesch, P. and Garzanti, E., 2015. Making geological sense of `Big Data' in sedimentary provenance analysis. Chemical Geology, 409, pp.20-27.

Vermeesch, P., 2008. Three new ways to calculate average (U-Th)/He ages. Chemical Geology, 249(3),pp.339-347.

Examples

# NOT RUN {
data(examples)

concordia(examples$UPb)

agespectrum(examples$ArAr)

isochron(examples$ReOs)

radialplot(examples$FT1)

helioplot(examples$UThHe)

evolution(examples$ThU)

kde(examples$Namib)

radialplot(examples$MountTom)

agespectrum(examples$spectrum)

weightedmean(examples$average)

# }