ShellChron

Builds Chronologies from Oxygen Isotope Profiles in Shells

v0.4.0 · Jul 5, 2021 · GPL-3

Description

Takes as input a stable oxygen isotope (d18O) profile measured in growth direction (D) through a shell + uncertainties in both variables (d18O_err & D_err). It then models the seasonality in the d18O record by fitting a combination of a growth and temperature sine wave to year-length chunks of the data (see Judd et al., (2018) <doi:10.1016/j.palaeo.2017.09.034>). This modeling is carried out along a sliding window through the data and yields estimates of the day of the year (Julian Day) and local growth rate for each data point. Uncertainties in both modeling routine and the data itself are propagated and pooled to obtain a confidence envelope around the age of each data point in the shell. The end result is a shell chronology consisting of estimated ages of shell formation relative to the annual cycle with their uncertainties. All formulae in the package serve this purpose, but the user can customize the model (e.g. number of days in a year and the mineralogy of the shell carbonate) through input parameters.

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CRAN Check Status

14 NOTE

Show all 14 flavors

Flavor	Status	Time
r-devel-linux-x86_64-debian-clang	NOTE	51.3s
r-devel-linux-x86_64-debian-gcc	NOTE	34.7s
r-devel-linux-x86_64-fedora-clang	NOTE	76.2s
r-devel-linux-x86_64-fedora-gcc	NOTE	80.8s
r-devel-macos-arm64	NOTE	15s
r-devel-windows-x86_64	NOTE	78s
r-oldrel-macos-arm64	NOTE
r-oldrel-macos-x86_64	NOTE	36s
r-oldrel-windows-x86_64	NOTE	92s
r-patched-linux-x86_64	NOTE	46.7s
r-release-linux-x86_64	NOTE	45s
r-release-macos-arm64	NOTE
r-release-macos-x86_64	NOTE	45s
r-release-windows-x86_64	NOTE	76s

Check details (14 non-OK)

NOTE r-devel-linux-x86_64-debian-clang

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
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checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
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    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-devel-linux-x86_64-debian-gcc

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
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    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-devel-linux-x86_64-fedora-clang

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
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    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-devel-linux-x86_64-fedora-gcc

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
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    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-devel-macos-arm64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-devel-windows-x86_64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-oldrel-macos-arm64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
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    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-oldrel-macos-x86_64

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checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-oldrel-windows-x86_64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-patched-linux-x86_64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-release-linux-x86_64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
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checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-release-macos-arm64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
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checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-release-macos-x86_64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-release-windows-x86_64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

Check History

NOTE 0 OK · 14 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 9, 2026

NOTE r-devel-linux-x86_64-debian-clang

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-devel-linux-x86_64-debian-gcc

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-devel-linux-x86_64-fedora-clang

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-devel-linux-x86_64-fedora-gcc

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-devel-macos-arm64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-devel-windows-x86_64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-patched-linux-x86_64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-release-linux-x86_64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-release-macos-arm64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-release-macos-x86_64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-release-windows-x86_64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-oldrel-macos-arm64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-oldrel-macos-x86_64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

NOTE r-oldrel-windows-x86_64

Rd files

checkRd: (-1) age_corr.Rd:15: Lost braces
    15 | \item{plot}{Should the results be plotted? (/code{TRUE/FALSE})}
       |                                                  ^
checkRd: (-1) age_corr.Rd:17: Lost braces
    17 | \item{agecorrection}{Correct for jumps in age (/code{TRUE}) or
       |                                                     ^
checkRd: (-1) age_corr.Rd:18: Lost braces
    18 | only for starting time (/code{FALSE})}
       |                              ^

Dependency Network

Version History

new 0.4.0 Mar 9, 2026

Maintainer

Niels de Winter

Dependencies

Depends

R (>= 3.5.0)

Imports

rtop (>= 0.5.14) zoo (>= 1.8.7) ggplot2 (>= 3.2.1) ggpubr (>= 0.4.0) tidyr (>= 1.1.1) scales (>= 1.1.0) dplyr magrittr

Suggests

knitr rmarkdown

Compilation

No compilation needed

First Published

Mar 9, 2026

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