arkL edit interval

arkL

select id,columnx from arkL_columns where dataset_id like 31

View/Edit arkL Database interval - KMa2 seq

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The age-window currently being used to search for terms for autocompletion is 19.3915 -> 120.785 Ma.

	interval above:	KMa3 seq
parent-intervals:	this interval:	KMa2 seq	sub-intervals:
	interval below:	KMa1 seq

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Interval data

intervalx:	KMa2 seqhas added abv?yesid: 6037 sort:40
alternative_term:	block label:
formal term:
interval_type:	mfsKMa2 MFS8524
parent_interval:
dataset:	sequences global (dataset id = 31)
alt dataset:	(dataset id = )
TSC Column:	id:308
stage:
colour:
interval_notes:
compilation_notes:
refs to add:
linked refs:
preset_duration:
preset_duration_notes:
tracecode	; Q2top from event age; Q1base from event age; Q3a duration from base & top

	age2020	age		event	event_id	pup	in interval	age	age2020
Top:		69.3915	<---	KMa3 SB	8523	0.8500	Hoploscaphites birkelundae WAZ	69.3915	00069.3915
Base:		70.7850	<---	KMa2 SB	8525	0.5000	Baculites grandis WAZ	70.785	00070.7850
base notes	Drawn on Haq’14 chart as just below base of North American Ammonite B. clinolbatus zone = 80% up in B. grandis Zone. "Both KMa1 and KMa2 are minor-amplitude events documented in western European basins, in Tunisia and New Zealand, and also correlate with oxygen-isotopic events." (modified quote from Haq’14, p.55)				comp notes

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Interval References

Dataset References

Haq, B. U. & Schutter, S. R. (2008). A chronology of Paleozoic sea-level changes. Science. 322: 64-68. gs

Haq, B. U. (2014). Cretaceous eustasy revisited. Global and Planetary Change. 113: 44-58. gs

Haq, B. U. (2017). Jurassic sea-level variations: a reappraisal. GSA Today. 28: -. gs

Haq, B. U. (2018). Triassic eustatic variations reexamined. GSA Today. 28: 4-9. gs

Hardenbol, J., et al. (1998). Mesozoic and Cenozoic Sequence Chronostratigraphic Framework of European Basins. In, de Graciansky, P. -C. , Hardenbol, J. , Jacquin, T. , and Vail, P. R. (ed.) Mesozoic- Cenozoic Sequence Stratigraphy of European Basins. SEPM Special Publication . 60: 3-13 & appendix 763-783. gs