arkL edit interval

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select id,columnx from arkL_columns where dataset_id like 13

View/Edit arkL Database interval - CN1c

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The age-window currently being used to search for terms for autocompletion is -30.99 -> 72.68 Ma.

	interval above:	CN5a
parent-intervals:CN1c;	this interval:	CN1c	sub-intervals: CN1c;
	interval below:	CN1b

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Interval data

intervalx:	CN1chas added abv?id: 4689 sort:266
alternative_term:	block label:c
formal term:
interval_type:
parent_interval:
dataset:	nannos Tethyan (dataset id = 13)
alt dataset:	(dataset id = )
TSC Column:	id:39
stage:
colour:
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:		19.0100	<---	FAD Sphenolithus belemnos	6637	0.0000		19.01	00019.0100
Base:		22.6800	<---	FAD Discoaster druggii (s.str.)	6644	0.0000		22.68	00022.6800
base notes	DASHED - Diachronous. Base Discoaster druggi (sensu stricto) -- Raffi et al. (GTS2020) assign as 22.68 (used here); but "Occurring later (close to base Chron C6Bn, ~ 22.32 Ma) in South Atlantic (Rio Grande Rise; Site 516; Florindo et al., 2015). Reliability: D" . Astronomically tuned as 22.82 Ma in eastern Mediterranean (based on projecting astronomical tuning of long-period minima to base-Miocene), which is consistent with ODP Leg 154. [Lourens et al. (2004; Table A2.2)] (used here). However, smaller forms appear earlier, at end of Oligocene (J. Bergen and E. de Kaenel, pers. commun., 2005). Backman et al. (2012) conclude that its FAD is "occurring a few thousand years earlier in the tropical Indian Ocean" compared to its ca. 22.59Ma rare occurrence in Pacific. FAD has been assigned to C6Cn in Leg 145 compilation, but Aubry (in Berggren et al., 1995) assigns 0.5 m.y. higher (in C6Br); so earlier chart had used C6Br.5.				comp notes

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