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View/edit a dataset - magnetochronology

This page allows you to view all the information for a dataset, i.e. for a set of events and the intervals that they define, including the definitions of the basal events and the data used to set their age. The columns are also plotted. See the introduction page and the notes on table creation for more information

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Dataset metadata

Dataset content

id	eventx	age	notes_2020
6319	FAD Morozovella aragonensis	52.4584	Defines P7 (=E5) base. Berggren and Pearson (2005), which is same chron-age calibration as Berggren et al. (1995a) -- ’Morozovella argonensis’ FAD is recorded in North Atlantic Hole 550, North Pacific Shatsky Rise Hole 577 and in Chron C23r in South Atlantic (Walvis Ridge) Hole 527. Their 52.3 Ma age is at Chron C23r.1 on their polarity scale. [NOTE: The Wade et al. (2011) table based on Berggren-Pearson (2005) lists the same 52.3 Ma, which suggests they didn’t convert to the chron-ages of the GTS04 magnetic scale.]
6326	LAD Morozovella velascoensis	55.1484	DASH (but Wade requested J.Ogg to remove "dash" via e-mail 18July2011) -- Wade et al. (2011) projects as 54.9 Ma relative to GTS04 polarity chrons, therefore at Chron C24r.61 (used here). Berggren and Pearson (2005), puts this LAD 0.2 myr higher than Berggren et al. (1995a) -- This LAD is recorded in younger part of Chron C24r in Hole 577 and in mid-C24r in Hole 577 (at 81.98 m). However, paleomagnetic data (Bleil, 1985, DSDP Leg 86: 449, Fig. 7b) suggests a hiatus occurs between ~82m & 83 m in Hole 577, which would have the effect of depressing (rendering older) the HO of ’M. velascoensis’. The HO of ’M. velascoensis’ in Hole 577 is in Nannofossil zone CP8 (=NP9) (Monechi, 1985: 310, Table 5) which supports interpretation of hiatus in Hole 577, because the LO of ’M. valascoensis’ is in Nannofossil Zone NP10. Furthermore, Monechi (1985: p.307) indicates absence of extremely condensed sedimentation across the Paleocene/Eocene boundary interval. Essentially, it is not yet possible to position this LAD proportionally within the long Chron C24r.
8917	top UT28n.2n	200.23
8920	base UT28n.1n	201.4	TJB-N/UT28n.1n
10581	base Bashkirian	323.4
10580	base Serpukhovian GTS04 definition	328.96	Retained here, because relative scaling of Davydov zones and magnetics used this duration

Column mock-up

This column mock-up plot is a simple plot of the data to allow visual comparison with the output from TimeScale Creator

The data plotted here are the columns from the magnetochronology dataset for the interval 0 - 500 Ma

The all events column is an optional extra column showing the interval tops and bases as well as the other events in the dataset. This does not correspond to a TSC column, but is useful for checking data.

finished!

Top stage/age:	Base stage/age:	cm per Ma:
columns		fields

Name:	magnetochronology id:4 sort: 0000000300	Dataset type:
TSC_source_notes:	GTS2020 composites: Quat = Channell-Singer-Jicha, 2020; C-sequence: Neogene-Paleogene = synthesis of many sources by Palicke in Raffi et al (GTS2020); Maast-Camp = Husson et al. (2011) and Thibault et al. (2012); M-Seq with M-Sequence Extension [deep-tow upward projection to surface (M27r-M37r or 3km mid-depth for M38n-M44n) = GTS2020 GeomagChapter (Ogg 2020) with spline-fit by Ogg-Agterberg incorporating Andy Gale's EarlyCret assigned stage-ages; Middle-Early Jurassic outcrop compilation with cycle-scaling by Hounslow-Mischa (see GTS2020 chapter); Late Triassic Newark from Kent et al (their 2018 updates) tied to CAMP basalts at top and candidate base-Norian GSSP (Pizza Mondello) for E8, then uncertain below. Triassic-outcrop based sets after Hounslow and Muttoni (2010), Zhang et al. (2020, Carnian), Muttoni et al. (various), Li (2016 with Yan Chen revisions 2020) etc. Late Permian after Steiner (2006). Early Permian-Ordovician = modified slightly from compilations GTS2012 and the Concise GTS 2016. NOTE that Hounslow et al. (2018 for Permian; 2019 for Paleozoic; 2020 pending for Carboniferous) has proposed other versions that should be incorporated; but most are similar to what is shown here.
compilation_notes:	Interval types: sequence; full chron - e..g C5 ; chron - e.g. C5n ; subchron e.g. C5n.2n NB the main labels are the full chron terms whilst events are variably correlated against chrons and subchrons, so all three need to be defined.
Cenozoic notes & compilation notes	Cenozoic Polarity Chrons are the basis of the ages assigned to all biostratigraphic datums. The nomenclature for the "C" sequence of polarity chrons (the Cenozoic counterpart to the Mesozoic M-sequence) is from Cande-Kent. Polarity chrons are labled by polarity (e.g., "C3n" and "C3r"). Subchrons within a main polarity chron are decimal-numbered from youngest to oldest (e.g., "C3n.2r.1n"). However, timing of events within a polarity chron is denoted by the "proportional stratigraphic distance from base", therefore "C21n.3" denotes an event within chron C21n that is 30% from the old end (base) toward the young end (top). Cande-Kent used a similar fractional system, but going "back in time". Either is okay, but my preference was to think in terms of stratigraphy. Cenozoic magnetic polarity scale: Cande, S., and D. Kent (1995), Revised calibration of the geomagnetic polarity time scale for the Late Cretaceous and Cenozoic, J. Geophysical Research, 100: 6093-6095. (which revises their 1992 compilation in JGR 97: 13917-13951.
Cretaceous notes & compilation notes	Maast-Camp = Husson et al. (2011) and Thibault et al. (2012); M-Seq with M-Sequence Extension [deep-tow upward projection to surface (M27r-M37r or 3km mid-depth for M38n-M44n) = GTS2020 Geomag Chapter with spline-fit by Ogg-Agterberg incorporating Andy Gale's Early Cret assigned stage-ages;
Jurassic notes & compilation notes	Middle-Early Jurassic outcrop compilation with cycle-scaling by Hounslow-Mischa (see GTS2020 chapter);	down as far as M27 (base Kimmeridgian) the magnetostrat terms are standardised/same as previously, below this much more variation, since chrons are very short.
Triassic notes & compilation notes	Triassic-outcrop based sets after Hounslow and Muttoni (2010), Zhang et al. (2020. Carnian), Muttoni et al. (various), Li (2016 with Yan Chen revisions 2020) etc.	near the Permo -Triassic boundary the sequence is confused due to discrepancies between the Tr and Permian workbooks
Permo-Carboniferous notes & compilation notes	Middle and Late Permian polarity column from Steiner, 2006, Geol. Soc. London Spec. Publ. (Lucas, editor), using proportions on her final summary figure. Mid-Frasnian through Famennian is a schematic based on western Australia
Devonian notes & compilation notes	Mid-Frasnian through Famennian is a schematic based on western Australia; especially Cannng Basin for mid-Frasnian to mid-Famennian by Hansma et al. (2015, EPSL)
Silurian-Ordovician notes & compilation notes
Cambrian notes & compilation notes
refs to add:	Chen 2020; Li 2016;
Linked refs:	Cande & Kent 1995;Channell et al. 2020;Hansma et al. 2015;Hounslow & Balabanov 2018;Hounslow & Muttoni 2010;Hounslow 2020;Husson et al. 2011;Kent et al. 2018;Ogg 2020;Raffi et al. 2020;Steiner 2006;Thibault et al. 2012;Zhang et al. 2020;
Interval Colour:	250/250/250
Event Colour:	250/250/250
Added abbreviations:
interval types:	sequence;full chron;chron;subchron
prefix(es):	M

View/edit a dataset - magnetochronology

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Dataset metadata

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Column mock-up