arkL edit interval

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select id,columnx from arkL_columns where dataset_id like 13

View/Edit arkL Database interval - NP16

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The age-window currently being used to search for terms for autocompletion is -10.7732 -> 93.3873 Ma.

	interval above:	NP17
parent-intervals:	this interval:	NP16	sub-intervals:
	interval below:	NP15

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Interval data

intervalx:	NP16has added abv?id: 4566 sort:473
alternative_term:	block label:
formal term:	D. tani nodifer
interval_type:
parent_interval:
dataset:	nannos Tethyan (dataset id = 13)
alt dataset:	(dataset id = )
TSC Column:	id:30
stage:
colour:
interval_notes:	Eocene Nanno Zone NP15-16 is combined in some zonal schemes, because marker of NP16 (base = LAD ’Rhabdolithus gladius’) is rare or often absent. [See Perch-Nielsen, 1985, for details.] However, Aubry (in Berggren et al., 1995), could distinquish 3 subzones in NP15 using markers similar for subzones of CP13 (with a total duration of 4 m.y.), and estimated that NP16 was a valid zone with duration of nearly 3 m.y.
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:		39.2268	<---	LAD Chiasmolithus solitus	6687	0.3000	C18n.1n	39.2268	00039.2268
Base:		43.3873	<---	LAD Blackites gladius	6696	0.0500	C20n	43.3873	00043.3873
base notes	DASH -- Poor calibration. Agnini et al. (2014) dash as ca. 5% up in C20n for base of NP16 (used here), Berggren et al. (1995a) estimate as lower Chron C20n (C20n.3). Base of NP16 was LAD of B. gladius, but rarely preserved (Paul Bown to J.Ogg, June2011); therefore IODP Expedition 320/321 Scientists (2010) used LAD of N. fulgens as proxy.				comp notes

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