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This page allows you to view all the information for a dataset, or subdataset, 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 intervals table can show two levels of intervals, such as zones and sub-zones, or stages and sub-stages. The events table shows all the events in the dataset, including for example taxon events not used as markers of the base of intevals. page. On this page codes such as TAsZ (Tethyan Ammonite subZone) which are added to interval and/or event names to make them unique are shown. To see the data as it appears on TSC, and without those codes use the column view page

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Dataset metadata

Name:	magnetochronology id:4 sort: 300	Dataset type:strat pal mag pal-micro paly pal -> micro pal-vert seq geochem micropal pbiol Data types:events & intervals point data
TSC_source_notes:	GTS2020 composites: Quat = Channell-Singer-Jicha, 2020; C-sequence: Neogene-Paleogene = synthesis of many sources by Palicke for 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:	Chanell et al. 2020; Li 2016; Yan Chen 2020;
Linked refs:	Cande & Kent 1995;Hansma et al. 2015;Hounslow & Balabanov 2018;Hounslow & Muttoni 2010;Hounslow 2020;Husson et al. 2011;Kent et al. 2018;Ogg 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	Main interval type: chron
prefix(es):	M

Missing references:Chanell et al. 2020; Li 2016; Yan Chen 2020; sorry, these are not in the bibliography yet insert new entry

chrons and subchrons in the magnetochronology dataset↑

interval	duration	interval notes	sub-interval	duration	notes	basal event	base age	pup	within_intv	offset	offset from	event notes	compilation notes	stage
C1n	0.7728		C1n (Brunhes)	0.7728	Matuyama Reversed incudes all of C1r & C2, and contains 4 brief normals - Jaramillo, Cobb Mountain, Olduvai & Feni	base C1n	0.7730	0		0.0000		Chron C1n (= Brunhes Normal) base is in the upper (younger) part of Oxygen isotopic stage 19; with astrochronology age of 773 +/- 1 ka (Channell et al., 2010; reviewed by Singer, 2014). Base of Middle Pleistocene (= base of Ionian Stage) = base of Brunhes Chron.		Chibanian
			C1r.1r (Matuyama)	0.2170	Matuyama Reversed incudes all of C1r & C2, and contains 4 brief normals - Jaramillo, Cobb Mountain, Olduvai & Feni	base C1r.1r	0.9900	0				990 +/-4 ka; and base of MIS 27 (Channell et al., 2020)		Calabrian
			C1r.1n (Jaramillo)	0.0800	Jaramillo Normal is a brief normal within the Matuyama Reversed	base C1r.1n	1.0700	0				Chron C1r.1n (= Jarmallo Normal) top coincides with Oxygen isotope stage 27, and base is in stage 31. 1070 +/-3 ka (MIS 31; and dated lavas in Tahiti; Channell et al., 2020)		Calabrian
			C1r.2r (Matuyama continued)	0.1100		base C1r.2r	1.1800	0				End of the Cobb Mountain excursion in ODP/IODP records is approximately 1178 ka (reviewed in Channell et al., 2020)		Calabrian
			C1r.2n (Cobb Mountain)	0.0350	Cobb Mountain cryptochron is a brief normal within the Matuyama Reversed	base C1r.2n	1.2150	0				Excursion named after Alder Creek rhyolite at Cobb Mountain (California) is near MIS36/37 boundary with onset in ODP/IODP cores at 1215 ka. Set sa polarity chron C1r.2r (="C1r.2r-1n" of Cande-Kent nomenclature). Marine cyclostratigraphy indicates a 30 kyr duration. Ar-Ar dating of base and top are summarized in Singer (2014) and Channell et al. (2020)		Calabrian
C1r	0.9970		C1r.3r (Matuyama continued)	0.5550		base C1	1.7700	0				In MIS 63. Astrochronology at ODP Site 677 (1.77 Ma) is consistent with that of Italan land sections (1.79 Ma) (Channell et al., 2020)		Calabrian
C2n	0.1550		C2n (Olduvai)	0.1550	Olduvai Normal is a brief normal within the Matuyama Reversed	base C2n	1.9250	0				Chron C2n (= Olduvai Normal). "Near LAD of Discoaster brouweri and MIS 71/72 transition.""Site U1308 result implies an age for the base Olduvai, on the LR04 timescale, of 1925 ka"" (review by Channell et al., 2020, of difficulties dating the onset)". Ar-Ar dating agrees with astronomical-cycles (e.g., Channell, 2002).		Gelasian
			C2r.1r (Matuyama continued)	0.1910		base C2r.1r	2.1160	0		0.0000				Gelasian
			C2r.1n (Feni)	0.0240	Feni Normal is a brief normal within the Matuyama Reversed	base C2r.1n	2.1400	0		0.0000		C2r.1n was formerly named Reunion; but the type location was discovered to be a brief excursion before the main Normal; therefore Singer (2014) recommended Feni be used after the documented extent and age-control at Feni Drift ODP Site 981 in North Atlantic (Channell et al., 2003). Reunion "upper" excursion suggested from Reunion island volcanics in Indian Ocean, is now best documented at Feni Drift ODP Site 981as spanning ca. 2.140 to 2.116 Ma (25 kyr)		Gelasian
C2r	0.6700		C2r.2r (Matuyama continued)	0.4550		base C2	2.5950	0		0.0000				Gelasian
			C2An.1n (Gauss)	0.4370	Gauss Normal spans all of C2An, and contains two brief reversed-polarity intervals -- Kaena (2An.1r) and Mammoth (2An.2r)	base C2An.1n	3.0320	0		0.0000		Chron C2r/C2An boundary (= Matuyama Reversed/Gauss Normal boundary) coincides with Oxygen isotope stage 103-104 boundary. "Gauss Normal Chron" (C2An) contains two reversed intervals -- Kaena (2An.1r) and Mammoth (2An.2r). Polarity chron C2An.1n -- Top (= top of Gauss) is 2.581 Ma in Cande-Kent’95 (used here), vs. 2.60 in Hilgen ’91. This 2.581 Ma age (Gauss/Matuyama boundary) was by Langereis, van Hoof & Hilgen (1994, Nature 369: 615).		Piacenzian
			C2An.1r (Kaena)	0.0840	Kaena Reversed is a brief reversed interval with the Gauss Normal	base C2An.1r	3.1160	0				Chron C2An.1r (Kaena Reversed) top coincides with Oxygen isotope stage G21-G22 boundary; and base with K3-KM2 boundary.		Piacenzian
			C2An.2n (Gauss continued)	0.0910		base C2An.2n	3.2070	0						Piacenzian
			C2An.2r (Mammoth)	0.1230	Mammoth Reversed is a brief reversed interval with the Gauss Normal	base C2An.2r	3.3300	0				Chron C2An.2r (Mammoth Reversed) top coincides with Oxygen isotope stage KM6; and base with stage MG1.		Piacenzian
C2An	1.0010		C2An.3n (Gauss continued)	0.2660		base C2An.3n	3.5960	0				Base of Piacenzian is base of Chron C2An.3n		Piacenzian
C2Ar	0.5910		C2Ar (Gilbert)	0.5910	Gilbert Reversed Chron" spans Chrons C2Ar throug C3r and contains 4 brief normal intrvals - Cochiti, Nunivak, Sidufjall & Thvera	base C2A	4.1870	0				Gilbert Reversed Chron" spans Chrons C2Ar throug C3r. Chron C2An/C2Ar boundary (= Gauss Normal/Gilbert Reversed boundary) coincides with Oxygen isotope stage MG6-Gi1 boundary.		Zanclean
			C3n.1n (Cochiti)	0.1130	Cochiti Normal [in Gilbert Reversed, which spans C2Ar through C3r)	base C3n.1n	4.3000	0				Chron C3n.1n (Cochiti Normal) top coincides with Oxygen isotope stage Co1-Co2 boundary; and base with stage CN1.		Zanclean
			C3n.1r (Gilbert continued)	0.1930		base C3n.1r	4.4930	0						Zanclean
			C3n.2n (Nunivak)	0.1380	Nunivak Normal	base C3n.2n	4.6310	0				Chron C3n.2n (Nunivak Normal) top coincides with Oxygen isotope stage N1-N2 boundary; and base with stage N7-N8 boundary.		Zanclean
			C3n.2r (Gilbert continued)	0.1680		base C3n.2r	4.7990	0						Zanclean
			C3n.3n (Sidufjall)	0.0970	Sidufjall Normal	base C3n.3n	4.8960	0				Chron C3n.3n (Sidufjall Normal) top coincides with Oxygen isotope stage Si1-Si2 boundary; and base with stage Si6.		Zanclean
			C3n.3r (Gilbert continued)	0.1010		base C3n.3r	4.9970	0						Zanclean
C3n	1.0480		C3n.4n (Thvera)	0.2380	Thvera Normal	base C3n.4n	5.2350	0				Chron C3n.4n (Thvera Normal) top coincides with Oxygen isotope stage T1; and base with stage TG2.		Zanclean
C3r	0.7880		C3r ((Gilbert continued)	0.7880	Base of polarity chron C3r is an alternate definiton for base of Pliocene	base C3	6.0230	0						Messinian
			C3An.1n	0.2490	Polarity chrons C3A through C5Bn have been scaled to fit astronomically calibrated Miocene/Pliocene boundary (5.32 Ma).	base C3An.1n	6.2720	0						Messinian
			C3An.1r	0.1140		base C3An.1r	6.3860	0						Messinian
C3An	0.7040		C3An.2n	0.3410		base C3An.2n	6.7270	0						Messinian
			C3Br.1r	0.0480	Base of Messinian is in lowermost Chron C3Br.1r	base C3Br.1r	7.2620	0						Messinian
			C3Br.1n	0.0430		base C3Br.1n	7.3050	0						Tortonian
			C3Br.2r	0.1510		base C3Br.2r	7.4560	0						Tortonian
			C3Br.2n	0.0430		base C3Br.2n	7.4990	0						Tortonian
C3Br	0.3230		C3Br.3r	0.0380		base C3B	7.5370	0						Tortonian
			C4n.1n	0.1130		base C4n.1n	7.6500	0						Tortonian
			C4n.1r	0.0510		base C4n.1r	7.7010	0						Tortonian
C4n	0.5880		C4n.2n	0.4240		base C4n.2n	8.1250	0						Tortonian
			C4r.1r	0.1320		base C4r.1r	8.2570	0						Tortonian
			C4r.1n	0.0430		base C4r.1n	8.3000	0						Tortonian
C4r	0.6460		C4r.2r	0.4710		base C4	8.7710	0		0.0000				Tortonian
			C4Ar.1r	0.2060		base C4Ar.1r	9.3110	0						Tortonian
			C4Ar.1n	0.1150		base C4Ar.1n	9.4260	0						Tortonian
			C4Ar.2r	0.2210		base C4Ar.2r	9.6470	0						Tortonian
			C4Ar.2n	0.0740		base C4Ar.2n	9.7210	0						Tortonian
C4Ar	0.6810		C4Ar.3r	0.0650		base C4A	9.7860	0						Tortonian
			C5n.1n	0.1510		base C5n.1n	9.9370	0						Tortonian
			C5n.1r	0.0470		base C5n.1r	9.9840	0						Tortonian
C5n	1.2700		C5n.2n	1.0720		base C5n.2n	11.0560	0						Tortonian
			C5r.1r	0.0900		base C5r.1r	11.1460	0						Tortonian
			C5r.1n	0.0420		base C5r.1n	11.1880	0						Tortonian
			C5r.2r	0.4040		base C5r.2r	11.5920	0						Tortonian
			C5r.2n	0.0650		base C5r.2n	11.6570	0				Base of Tortonian = base of Chron C5r.2n		Tortonian
C5r	0.9930		C5r.3r	0.3920		base C5	12.0490	0						Tortonian
			C5An.1n	0.1250		base C5An.1n	12.1740	0						Serravallian
			C5An.1r	0.0980		base C5An.1r	12.2720	0						Serravallian
C5An	0.4250		C5An.2n	0.2020		base C5An.2n	12.4740	0						Serravallian
			C5Ar.1r	0.2610		base C5Ar.1r	12.7350	0						Serravallian
			C5Ar.1n	0.0350		base C5Ar.1n	12.7700	0						Serravallian
			C5Ar.2r	0.0590		base C5Ar.2r	12.8290	0						Serravallian
			C5Ar.2n	0.0580		base C5Ar.2n	12.8870	0						Serravallian
C5Ar	0.5580		C5Ar.3r	0.1450	Ref "19" refers to Lourens et al. (GTS2004) interpolating ages of magnetic chrons using a smoothed spreading model from 13.0 Ma to base of Miocene (23.0 Ma)	base C5A	13.0320	0						Serravallian
			C5Bn.1n	0.0950		base C5Bn.1n	14.8700	0						Langhian
			C5Bn.1r	0.1700		base C5Bn.1r	15.0400	0						Langhian
C5Bn	0.4110		C5Bn.2n	0.1460		base C5Bn.2n	15.1860	0						Langhian
			C5Cn.1n	0.2670		base C5Cn.1n	16.2610	0						Burdigalian
			C5Cn.1r	0.0900		base C5Cn.1r	16.3510	0						Burdigalian
			C5Cn.2n	0.0830		base C5Cn.2n	16.4340	0						Burdigalian
			C5Cn.2r	0.0980		base C5Cn.2r	16.5320	0						Burdigalian
C5Cn	0.6430		C5Cn.3n	0.1050		base C5Cn.3n	16.6370	0						Burdigalian
			C5Dr.1r	0.1680		base C5Dr.1r	17.6340	0						Burdigalian
			C5Dr.1n	0.0420	C5Dr.1n is a Crptochron within C5Dr	base C5Dr.1n	17.6760	0						Burdigalian
C5Dr	0.5410		C5Dr.2r	0.3310		base C5D	18.0070	0						Burdigalian
			C6An.1n	0.2030		base C6An.1n	20.1820	0						Burdigalian
			C6An.1r	0.2660		base C6An.1r	20.4480	0						Burdigalian
C6An	0.7860		C6An.2n	0.3170		base C6An.2n	20.7650	0						Burdigalian
			C6AAr.1r	0.2370		base C6AAr.1r	21.4410	0						Aquitanian
			C6AAr.1n	0.0780		base C6AAr.1n	21.5190	0						Aquitanian
			C6AAr.2r	0.1720		base C6AAr.2r	21.6910	0						Aquitanian
			C6AAr.2n	0.0310		base C6AAr.2n	21.7220	0						Aquitanian
C6AAr	0.6020		C6AAr.3r	0.0840		base C6AA	21.8060	0						Aquitanian
			C6Bn.1n	0.1790		base C6Bn.1n	21.9850	0						Aquitanian
			C6Bn.1r	0.0570		base C6Bn.1r	22.0420	0						Aquitanian
C6Bn	0.5360		C6Bn.2n	0.3000		base C6Bn.2n	22.3420	0		0.0000				Aquitanian
			C6Cn.1n	0.1710		base C6Cn.1n	22.7920	0						Aquitanian
			C6Cn.1r	0.1810		base C6Cn.1r	22.9730	0						Aquitanian
			C6Cn.2n	0.0670		base C6Cn.2n	23.0400	0				Oligocene/Miocene boundary = base of C6Cn.2n = 23.8 Ma = age calibration point of Cande and Kent (1992)		Aquitanian
			C6Cn.2r	0.1720		base C6Cn.2r	23.2120	0						Chattian
C6Cn	0.6970		C6Cn.3n	0.1060		base C6Cn.3n	23.3180	0						Aquitanian
			C7n.1n	0.0360		base C7n.1n	24.0610	0						Chattian
			C7n.1r	0.0630		base C7n.1r	24.1240	0						Chattian
C7n	0.4340		C7n.2n	0.3350		base C7n.2n	24.4590	0						Chattian
			C8n.1n	0.1650		base C8n.1n	25.2640	0						Chattian
			C8n.1r	0.0400		base C8n.1r	25.3040	0						Chattian
C8n	0.8880		C8n.2n	0.6830		base C8n.2n	25.9870	0						Chattian
			C10n.1n	0.2280		base C10n.1n	28.0870	0						Rupelian
			C10n.1r	0.0540		base C10n.1r	28.1410	0						Rupelian
C10n	0.4190		C10n.2n	0.1370		base C10n.2n	28.2780	0						Rupelian
			C11n.1n	0.2940		base C11n.1n	29.4770	0						Rupelian
			C11n.1r	0.0500		base C11n.1r	29.5270	0						Rupelian
C11n	0.7870		C11n.2n	0.4430		base C11n.2n	29.9700	0						Rupelian
			C16n.1n	0.1380		base C16n.1n	35.7180	0						Priabonian
			C16n.1r	0.0560		base C16n.1r	35.7740	0						Priabonian
C16n	0.7710		C16n.2n	0.5770		base C16n.2n	36.3510	0						Priabonian
			C17n.1n	0.8120		base C17n.1n	37.3850	0				Base of Priabonian (working version in GTS2012) was assigned here as base of Chron C17n.1n		Priabonian
			C17n.1r	0.1450		base C17n.1r	37.5300	0						Priabonian
			C17n.2n	0.2510		base C17n.2n	37.7810	0						Priabonian
			C17n.2r	0.0770		base C17n.2r	37.8580	0						Bartonian
C17n	1.5080		C17n.3n	0.2230		base C17n.3n	38.0810	0						Priabonian
			C18n.1n	1.1840		base C18n.1n	39.5820	0						Bartonian
			C18n.1r	0.0840		base C18n.1r	39.6660	0						Bartonian
C18n	1.6750		C18n.2n	0.4070		base C18n.2n	40.0730	0						Bartonian
			C23n.1n	0.2290		base C23n.1n	50.9960	0						Ypresian
			C23n.1r	0.0510		base C23n.1r	51.0470	0						Ypresian
C23n	0.9570		C23n.2n	0.6770		base C23n.2n	51.7240	0						Ypresian
			C24n.1n	0.3900		base C24n.1n	52.9300	0						Ypresian
			C24n.1r	0.0900		base C24n.1r	53.0200	0						Ypresian
			C24n.2n	0.1000		base C24n.2n	53.1200	0						Ypresian
			C24n.2r	0.1300		base C24n.2r	53.2500	0						Ypresian
C24n	1.3600		C24n.3n	0.6500		base C24n.3n	53.9000	0						Ypresian
			M20n.1n	0.3268		base M20n.1n	144.2948	0.7	M20n					Tithonian
			M20n.1r	0.0561		base M20n.1r	144.3509	0.65	M20n					Tithonian
M20n	1.0785		M20n.2n	0.6956		base M20n	145.0465	0.38	M20					Tithonian
			M22n.1n	1.2916		base M22n.1n	148.3006	0.13	M22n	0.0000				Tithonian
			M22n.1r	0.0431		base M22n.1r	148.3437	0.1	M22n					Tithonian
			M22n.2n	0.0460		base M22n.2n	148.3897	0.07	M22n	0.0000				Tithonian
			M22n.2r	0.0414		base M22n.2r	148.4311	0.04	M22n	0.0000				Tithonian
M22n	1.4846		M22n.3n	0.0625		base M22n	148.4936	0.29	M22					Tithonian
			M23r.1r	0.3076		base M23r.1r	150.1353	0.7	M23r					Kimmeridgian
M23r	1.0253		M23r.1n	0.0287		base M23r	150.8530	0	M23					Kimmeridgian
			M24r.1r	0.5150		base M24r.1r	151.6327	0.33	M24r					Kimmeridgian
M24r	0.7733		M24r.1n	0.0286		base M24r	151.8910	0	M24					Kimmeridgian
			M25An.1n	0.1318		base M25An.1n	153.5738	0.69	M25An					Kimmeridgian
			M25An.1r	0.0686		base M25An.1r	153.6424	0.52	M25An					Kimmeridgian
			M25An.2n	0.0803		base M25An.2n	153.7227	0.33	M25An					Kimmeridgian
M25An	0.4184		M25An.2r	0.1034		base M25An	153.8604	0.27	M25A					Kimmeridgian
			M26n.1n	0.1441		base M26n.1n	154.1601	0.74	M26n					Kimmeridgian
			M26n.1r	0.0685		base M26n.1r	154.2286	0.61	M26n					Kimmeridgian
			M26n.2n	0.0301		base M26n.2n	154.2587	0.56	M26n					Kimmeridgian
			M26n.2r	0.0608		base M26n.2r	154.3195	0.45	M26n					Kimmeridgian
			M26n.3n	0.1145		base M26n.3n	154.4340	0.24	M26n					Kimmeridgian
			M26n.3r	0.1069		base M26n.3r	154.5409	0.04	M26n					Kimmeridgian
M26n	0.5479		M26n.4n	0.0230		base M26n	154.5639	0.28	M26					Kimmeridgian
			M28n.1n	0.3390		base M28n.1n	155.4670	0	M28n.1n					Oxfordian
			M28n.1r	0.1700		base M28n.1r	155.6370	0	M28n.1r					Oxfordian
			M28n.2n	0.1130		base M28n.2n	155.7500	0	M28n.2n					Oxfordian
			M28n.2r	0.2660		base M28n.2r	156.0160	0	M28n.2r					Oxfordian
			M28n.3n	0.2790		base M28n.3n	156.2950	0	M28n.3n					Oxfordian
M28n	1.3630		M28n.3r	0.1040		base M28n	156.4910	0	M28n					Oxfordian
			M33n.1n	0.2320		base M33n.1n	158.9840	0	M33n.1n					Oxfordian
			M33n.1r	0.1570		base M33n.1r	159.1410	0	M33n.1r					Oxfordian
			M33n.2n	0.0930		base M33n.2n	159.2340	0	M33n.2n					Oxfordian
			M33n.2r	0.0820		base M33n.2r	159.3160	0	M33n.2r					Oxfordian
			M33n.3n	0.0810		base M33n.3n	159.3970	0	M33n.3n					Oxfordian
			M33n.3r	0.1340		base M33n.3r	159.5310	0	M33n.3r					Oxfordian
M33n	1.0330		M33n.4n	0.2540		base M33n	159.7850	0	M33n					Oxfordian
			M34n.1n	0.0950		base M34n.1n	160.1230	0	M34n.1n					Oxfordian
M34n	0.6670		M34n.1r	0.4630		base M34n	160.6950	0	M34n					Oxfordian
			M36n.1n	0.3090		base M36n.1n	161.4050	0	M36n.1n					Oxfordian
M36n	0.5650		M36n.1r	0.1720		base M36n	161.6610	0	M36n					Oxfordian
			M37n.1n	0.2970		base M37n.1n	162.1090	0	M37n.1n					Callovian
M37n	0.5740		M37n.1r	0.1410		base M37n	162.3860	0	M37n					Callovian
			M38n.1n	0.1310		base M38n.1n	162.6730	0	M38n.1n					Callovian
			M38n.1r	0.0820		base M38n.1r	162.7550	0	M38n.1r					Callovian
			M38n.2n	0.1230		base M38n.2n	162.8780	0	M38n.2n					Callovian
			M38n.2r	0.1030		base M38n.2r	162.9810	0	M38n.2r					Callovian
			M38n.3n	0.1000		base M38n.3n	163.0810	0	M38n.3n					Callovian
			M38n.3r	0.1380		base M38n.3r	163.2190	0	M38n.3r					Callovian
			M38n.4n	0.2810		base M38n.4n	163.5000	0	M38n.4n					Callovian
M38n	1.2220		M38n.4r	0.1570		base M38n	163.7640	0	M38n					Callovian
			M39n.1n	0.1160		base M39n.1n	164.0960	0	M39n.1n					Callovian
			M39n.1r	0.3670		base M39n.1r	164.4630	0	M39n.1r					Callovian
			M39n.2n	0.5500		base M39n.2n	165.0130	0	M39n.2n					Callovian
			M39n.2r	0.1900		base M39n.2r	165.2030	0	M39n.2r					Callovian
			M39n.3n	0.0860		base M39n.3n	165.2890	0	M39n.3n					Callovian
			M39n.3r	0.1990		base M39n.3r	165.4880	0	M39n.3r					Bathonian
			M39n.4n	0.1000		base M39n.4n	165.5880	0	M39n.4n					Bathonian
			M39n.4r	0.1310		base M39n.4r	165.7190	0	M39n.4r					Bathonian
			M39n.5n	0.0780		base M39n.5n	165.7970	0	M39n.5n					Bathonian
M39n	2.0340		M39n.5r	0.1120		base M39n	166.0140	0	M39n					Callovian
			M40n.1n	0.0610		base M40n.1n	166.1800	0	M40n.1n					Bathonian
			M40n.1r	0.1560		base M40n.1r	166.3360	0	M40n.1r					Bathonian
			M40n.2n	0.1440		base M40n.2n	166.4800	0	M40n.2n					Bathonian
M40n	0.5280		M40n.2r	0.1110		base M40n	166.6470	0	M40n					Bathonian
			M41n.1n	0.0740		base M41n.1n	167.1780	0	M41n.1n					Bathonian
			M41n.1r	0.0600		base M41n.1r	167.2380	0	M41n.1r					Bathonian
			M41n.2n	0.0460		base M41n.2n	167.2840	0	M41n.2n					Bathonian
M41n	0.4200		M41n.2r	0.0470		base M41n	167.5240	0	M41n					Bathonian
			M42n.1n	0.1700		base M42n.1n	168.1690	0	M42n.1n					Bathonian
			M42n.1r	0.3800		base M42n.1r	168.5490	0	M42n.1r					Bajocian
			M42n.2n	0.1180		base M42n.2n	168.6670	0	M42n.2n					Bajocian
			M42n.2r	0.0990		base M42n.2r	168.7660	0	M42n.2r					Bajocian
			M42n.3n	0.1620		base M42n.3n	168.9280	0	M42n.3n					Bajocian
M42n	1.2750		M42n.3r	0.0370		base M42n	169.2740	0	M42n					Bajocian
mid-Aal R	1.1270					base mid-Aal R	172.6600	0.05	Ludwigia murchisonae TAZ				part of a confused interval, needs checking	Aalenian
			E22n.2n	0.2300		base E22n.2n	203.0300	0		0.0000				Rhaetian
			E22n.1r	0.0100		base E22n.1r	203.0400	0		0.0000				Rhaetian
E22n	0.6100		E22n.1n	0.3700		base E22n.1n	203.4100	0		0.0000				Rhaetian
			E21r.3r	0.3200		base E21r.3r	203.7300	0		0.0000				Rhaetian
			E21r.2n	0.0200		base E21r.2n	203.7500	0		0.0000				Rhaetian
			E21r.2r	0.1300		base E21r.2r	203.8800	0		0.0000				Rhaetian
			E21r.1n	0.0500		base E21r.1n	203.9300	0		0.0000				Rhaetian
E21r	0.7100		E21r.1r	0.1900		base E21r.1r	204.1200	0		0.0000				Rhaetian
			E20r.1n	0.0400		base E20r.1n	206.0700	0		0.0000				Norian
E20r	0.2100		E20r.1r	0.1700		base E20r.1r	206.2400	0		0.0000				Norian
			E15r.1n	0.0400		base E15r.1n	212.4000	0		0.0000				Norian
E15r	0.2400		E15r.1r	0.2000		base E15r.1r	212.6000	0		0.0000				Norian
			E13n.2n	0.9200		base E13n.2n	217.8900	0		0.0000				Norian
			E13n.1r	0.0400		base E13n.1r	217.9300	0		0.0000				Norian
E13n	1.4900		E13n.1n	0.5300		base E13n.1n	218.4600	0		0.0000				Norian
			MK5n.1r	0.5040	E5r	base MK5n.1r	230.0090	0.57	Tuvalian	0.0000		Base of Germanic Carnian "MK5n.1r" is ca. 57% up in Tuvalian (Wendy Zhang summary figure, 2020). Fits Spino-N1/UT11n.1r -- Base = 0.18 of Tuvalian 3 (A. spinosus Zone) in Hounslow-Muttoni 2010 synthesis based on relative durations at Pizzo Mondello. Shortened from Concise GTS of 0.99 of T. subbullatus Zone		Carnian
			MK5n.1n.2n	1.7640	E2n-5n?	base MK5n..1n.2n	231.7730	0.29	Tuvalian	0.0000		Base of Germanic Carnian "MK5n.1n.2n" is 29% up in Tuvalian (Wendy Zhang summary figure, 2020). MUCH LONGER than former Spino-N1/UT11n.1n -- Base = 0.10 of A. spinosus Zone to bring equal to base of Newark E4n in this "long Rhaetian" correlation version. Shortened from Concise GTS where Base of Gallet composite is probably Channell SB.2n.1n short normal = 0.85 of T. subbullatus Zone. They assign as E5n, but this really compacts their section. NOTE: Hounslow-Muttoni put this entirely into A. spinosus Zone (plus uppermost UT10r) => adjusted to be 0.1 up in A. sphasus zone (and all ones above are shifted/compacted accordingly).		Carnian
			MK5n.1n.1r	0.0630	E2r?	base MK5n.1n.1r	231.8360	0.28	Tuvalian	0.0000		Base of Germanic Carnian "MK5n.1n.1r" (very brief) is 28% up in Tuvalian (Wendy Zhang summary figure, 2020). MUCH SHORTER than former Subb-R/UT10r -- Chanell SB.2r base = about 70% up in former P. carpathica zone (merged with next higher zone here due to changes in definition). They assign as E4r, but this really compacts their section.		Carnian
MK5n	3.1500		MK5n.1n.1n	0.8190	pre-E	base MK5n.1n.1n	232.6550	0.15	Tuvalian	0.0000		Base of Germanic Carnian "MK5n.1n.1n" is 15% up in Tuvalian (Wendy Zhang summary figure, 2020). = similar to base of Subb-N/UT10n -- Channel SB.2n base = about 20% up in former P. carpathica zone (merged with next higher zone here due to changes in definition) (hence about base of T. subbullatus ammonite zone). They assign as E4n, but this really compacts their section.		Carnian
			WY1n.2n	0.1755	Duration of interpreted WY1n = UT2n is 3 100-kyr cycles in lower Zhuganpo	base WY1n.2n	235.7455	0.35	WY1n	0.0000		Trachy-N/UT2n (upper) Base = 35% up in UT2n [=WY1n]		Carnian
			WY1n.r1	0.0270		base WY1n.r1	235.7725	0.25	WY1n	0.0000		Trachy-N/UT2n (very brief R) Base = 25% up in UT2n (Hounslow-Muttoni) [=WY1n]		Carnian
WY1n	0.2700	Duration of interpreted WY1n = UT2n is 3 100-kyr cycles in lower Zhuganpo	WYn.1n	0.0675	0.269283333	base WYn.1n	235.8400	0.8	Trachyceras aon TAZ	0.0000		Trachy-N/UT2n -- Base = 0.8 of Trachy. aon s.z. (was 0.7; but moved up to fit Zhuganpo cycle-mag)		Carnian
			WY1n.2n	0.1755	Duration of interpreted WY1n = UT2n is 3 100-kyr cycles in lower Zhuganpo	base WY1n.2n	235.7455	0.35	WY1n	0.0000		Trachy-N/UT2n (upper) Base = 35% up in UT2n [=WY1n]		Carnian
			WY1n.r1	0.0270		base WY1n.r1	235.7725	0.25	WY1n	0.0000		Trachy-N/UT2n (very brief R) Base = 25% up in UT2n (Hounslow-Muttoni) [=WY1n]		Carnian
WYn	0.2700		WYn.1n	0.0675	0.269283333	base WYn.1n	235.8400	0.8	Trachyceras aon TAZ	0.0000		Trachy-N/UT2n -- Base = 0.8 of Trachy. aon s.z. (was 0.7; but moved up to fit Zhuganpo cycle-mag)		Carnian
			SC4r.3r	0.0440		base SC4r.3r	239.0940	0.92	SC4r	0.0000		ca. 92% up in SC4r		Ladinian
			SC4r.2n	0.0385		base SC4r.2n	239.1325	0.85	SC4r	0.0000		ca. 85% up in SC4r		Ladinian
			SC4r.2r	0.0990		base SC4r.2r	239.2315	0.67	SC4r	0.0000		ca. 67% up in SC4r		Ladinian
			SC4r.1n	0.0385		base SC4r.1n	239.2700	0.6	SC4r	0.0000		ca. 60% up in SC4r		Ladinian
SC4r	0.5500		SC4r1rr	0.3300		base SC4r1rr	239.6000	0		0.0000		Numerical age from Maron et al. (2018)		Ladinian
			SC3n.3n	0.0910		base SC3n.3n	240.5910	0.87	SC3n	0.0000		Ca.87% up in SC3n. Gred-N2.n1/MT10n -- was Base = 0.68 of Euprotrachy. gredleri s.z.		Ladinian
			SC3n.2r	0.0490		base SC3n.2r	240.6400	0.8	SC3n	0.0000		Ca.80% up in SC3n. Gred-R1/MT9r -- was Base = 0.50 of Euprotrachy. gredleri s.z.		Ladinian
			SC3n.2n	0.1800		base SC3n.2n	240.8200	0		-0.0300	base SC3n.1r	Base is 0.03 above SC3n.1r		Ladinian
			SC3n.1r	0.0300		base SC3n.1r	240.8500	0.5	SC3n	0.0000		Brief (0.03) R begins 50% up in SC3n of Maron et al. (2019). Gred-R1/MT9n.1r -- was Base = 0.10 of Euprotrachy. gredleri s.z. Assumed to be the brief R in Hounslow-Muttoni (2010) -- would need to tract down sets that I used.		Ladinian
SC3n	0.7000		SC3n.1n	0.3500		base SC3n.1n	241.2000	0		0.0000		Numerical age from Maron et al. (2019). Margar-N/MT9n.1n -- This long-Normal-polarity zone extends from upper (0.7) Eoprotrachy. curionii Zone through entire Protrachy. margaritosum to lowermost Euprotrachy. gredleri (see continuation in "secondary" column). Top in "Primary" column shown as top of Protrachy. margaritosum s.z. for "splice" purposes.		Ladinian
			MT3r.3r	0.1721		base MT3r.3r	244.9834	0.5	MT3r	0.0000		Aeg-2r/CG11r -- Base = base of Bithynian in Hounslow-Muttoni (2010) composite diagram. Drawn as 50% up in complex MT3r in Hounslow-Muttoni (2010) composite diagram (used here)		Anisian
			MT3r.2n	0.0516		base MT3r.2n	245.0350	0.35	MT3r	0.0000		Drawn as 35% up in complex MT3r in Hounslow-Muttoni (2010) composite diagram (used here)		Anisian
			MT3r.2r	0.0517		base MT3r.2r	245.0867	0.2	MT3r	0.0000		Drawn as 20% up in complex MT3r in Hounslow-Muttoni (2010) composite diagram (used here)		Anisian
MT3r	0.3442		MT3r.1n	0.0344		base MT3r.1r	245.1555	0.9	E16 ChL	0.0000		Aeg-2r/CG11r -- Base MT3r is about 90% up in E16 at Guandao (Mingsong Li, revised preliminary; used here). Was drawn in Houslow-Muttoni as about 90% up in Aegean; and was tentatively CG11r of Szurlies (in uppermost Rot Fm, or about middle of his Germanic cycle s7.7 (or 7.11 using Menning’s 2013 scale which indicated a gap of 3 cycles below the one-cycle "R" at 7.11) -- which would be about 0.5 myr lower; however that study didn’t extend high enough, and cyclicity may not always be 100kyr?) GTS04 -- Base = 0.75 of Paracrochordiceras Zone, which projected to nearly same level after adjusting base-Anisian age!		Anisian
			MT3n.2n	0.4017		base MT3n.2n	245.5572	0.72	MT3n	0.0000		Aeg-1n/CG11n/MT3n -- ca. 72% up in main MT3n in Hounslow-Muttoni (2010) diagram		Anisian
MT3n	1.4345		MT3n.1r	0.1004		base MT3n.1n	246.5900	0	s7.3 DeL	0.0000		Aeg-1n/CG11n/MT3n -- Set to base of CG11n of Szurlies’07 (lowermost Rot, put 2 cycles up as base of Germanic cycle s7.3 to be consistent with Guandao cycle-mag and Wantou mag-UPb age model (YanChen’19 EPSL) relative to base-Ch. timorensis. However, it is drawn in Houslow-Muttoni as about 25% up in Aegean. A better scaling might require shifting "MT1n-MT1n" to be in Spathian (which may just be a problem relating base-Rot to GSSP in Romania)		Anisian
			CG9n.3n	0.4800		base CG9n.3n	247.6000	0.9	s5.10 DeL	0.0000		CG9n.3n base at ca. 90% up in s5.10 (Szurlies’07; fig. 7)		Olenekian
			CG9n.2r	0.0400		base CG9n.2r	247.6400	0.5	s5.10 DeL	0.0000		Brief CG9n.2r subchron base at at middle of s5.10 (Szurlies’07, Fig. 7)		Olenekian
			CG9n.2n	0.3250		base CG9n.2n	247.9650	0.25	s5.7 DeL	0.0000		CG9n.2n base ca. 25% up in s5.7 (Szurlies’07; Fig.7)		Olenekian
			CG9n.1r	0.0600		base CG9n.1r	248.0250	0.65	s5.6 DeL	0.0000		CG9n.1r subchron base ca. 65% up in s5.6 (Szurlies’07; Fig.7)		Olenekian
CG9n	1.0050		CG9n.1n	0.1000		base CG9n.1n	248.1250	0.65	s5.5 DeL	0.0000		CB9n base ca. 65% up in s5.5 (Szurlies’07; Fig.7) (was base of s5.8 in Szurliles’04)		Olenekian

Events in the magnetochronology dataset↑