arkL edit interval

arkL

select id,columnx from arkL_columns where dataset_id like 1

View/Edit arkL Database interval - Late Triassic

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The age-window currently being used to search for terms for autocompletion is 151.36 -> 287 Ma.

	interval above:	Early Jurassic
parent-intervals:Triassic;	this interval:	Late Triassic	sub-intervals: Rhaetian; Norian; Carnian;
	interval below:	Middle Triassic

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Interval data

intervalx:	Late Triassichas added abv?id: 6375 sort:140
alternative_term:	block label:Late
formal term:
interval_type:
parent_interval:
dataset:	chronostratigraphy (dataset id = 1)
alt dataset:	(dataset id = )
TSC Column:	id:78
stage:
colour:	189/140/195
interval_notes:
compilation_notes:
refs to add:
linked refs:
preset_duration:
preset_duration_notes:
tracecode	; Q1base from event age; Q2top from event age; Q3a duration from base & top

	age2020	age		event	event_id	pup	in interval	age	age2020
Top:		201.3600	<---	base Hettangian	634	0.0000	Psiloceras tilmanni TAZ	201.36	00201.3600
Base:		237.0000	<---	base Carnian	8876	0.0000		237	00237.0000
base notes	Main marker for Carnian GSSP. Fixed at 237 Ma "GSSP is one ammonite subzone just above a level dated at 237.77 +/- 0.14 Ma" (Mietto et al., 2012, Carnian GSSP report in Episodes). No subzonal divisions => scaled as "1.2 subzonal units" in relative duration because it was equivalent to lowest subzone of Trachyceras Zone, and to enable T. aon to move down for obtaining 1.3 myr duration for late Julian Reversed-zone. Ladinian ’Daxatina canadensis’ ammonite zone (uppermost Ladinian) is also the lowest subzone of the Trachyceras zone that extends into the Carnian. It is upgraded to a Zone in some schemes (e.g., Spitsbergen). This zone is equivalent to upper half of ’Frank. regoledanus’ zone of Krystyn (1983).				comp notes

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