arkL edit interval

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select id,columnx from arkL_columns where dataset_id like 13

View/Edit arkL Database interval - NP19-20

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The age-window currently being used to search for terms for autocompletion is -15.55 -> 86.84 Ma.

	interval above:	NP21
parent-intervals:	this interval:	NP19-20	sub-intervals:
	interval below:	NP18

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Interval data

intervalx:	NP19-20has added abv?id: 4595 sort:399
alternative_term:	block label:
formal term:	S. pseudoradians - I. recurvus
interval_type:
parent_interval:
dataset:	nannos Tethyan (dataset id = 13)
alt dataset:	(dataset id = )
TSC Column:	id:30
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:		34.4500	<---	LAD Discoaster saipanensis	6671	0.0000		34.45	00034.4400
Base:		36.8400	<---	FCO Isthmolithus recurvus (common)	6678	0.0000		36.84	00036.8400
base notes	DASH -- The base of NP19-20 is defined by the first occurrence of I. recurvus. Agnini et al. (2014), citing Fornaciari et al. (2010) assign this FAD of COMMON as 36.84 Ma according to P?like et al. (2006) cyclostratigraphy (used here). FAD falls in the magnetochron C16r according to Backman 1986 at Site 523 [as cited by IODP Expedition 320/321 Scientists (2010), FAD is 36.6 Ma, which would be base Chron C16r in Cande-Kent’95 scale]. Several papers report the FO of I. recurvus (higher) in the C16n.2n (i.e Sites 1090, Massignano etc. ). [Simonetta Monechi, as relayed by N. Vandenberghe to J.Ogg, Jan 2011]. Need more checking on this datum! [IODP Expedition 320/321 Scientists (2010); Berggren et al. (1995a)]				comp notes

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