arkL edit interval

	age2020	age		event	event_id	pup	age	age2020
Top:		113.2000	<---	FAD Microhedbergella renilaevis	4374	0.0000	113.2	00113.2000
Base:		113.2170	<---	FAD Microhedbergella miniglobularis	4375	0.0000	113.217	00113.2200
base notes	Paraticinella rohri:<br>Datum calibration/notes = DASHED -- Base of former H. planispira foraminifer zone (assumed "LAD" of T. bejaouaensis, now P. eubejaouaensis" definition is used by them?) is 31.4 long-eccentricity cycles below top of Albian (Huang et al, 2010; and Wendy Zhang, 2019) at Piobbico. Brian Huber (to J.Ogg; 15Aug11 "Note that there is no longer a planispira zone because true planispira did not evolve until the late Albian!") Calibrations of other authors are inconsistent -- the base of the H. planispira Zone is placed ABOVE base of P. columnata in Leckie et al. (2002), middle of H.jacobi ammonite zone of Late Aptian (Herle et al., 2004) and much higher as the middle of Lower Albian by Bellier et al. (2000) -- and other assignments are briefly reviewed in Petrizzo et al. (Newsletters of Stratigraphy; in press 2011). However, Hardenbol et al. (1998) place the FAD of H. planispira below the FAD of P. columnata, as is indicated at Piobbico and at the reference sections in SE France; thereforehad assigned as 50% up in H. jacobi Zone. "Gap zone" (LAD at base; FAD at top).	comp notes

age2020

age

event

event_id

pup

in interval

age

age2020

Top:

113.2000

<---

4374

0.0000

113.2

00113.2000

Base:

113.2170

<---

4375

0.0000

113.217

00113.2200

base
notes

Paraticinella rohri:<br>Datum calibration/notes = DASHED -- Base of former H. planispira foraminifer zone (assumed "LAD" of T. bejaouaensis, now P. eubejaouaensis" definition is used by them?) is 31.4 long-eccentricity cycles below top of Albian (Huang et al, 2010; and Wendy Zhang, 2019) at Piobbico.  Brian Huber (to J.Ogg; 15Aug11 "Note that there is no longer a planispira zone because true planispira did not evolve until the late Albian!")  Calibrations of other authors are inconsistent -- the base of the H. planispira Zone is placed ABOVE base of P. columnata in Leckie et al. (2002), middle of H.jacobi ammonite zone of Late Aptian (Herle et al., 2004) and much higher as the middle of Lower Albian by Bellier et al. (2000) -- and other assignments are briefly reviewed in Petrizzo et al. (Newsletters of Stratigraphy; in press 2011).  However, Hardenbol et al. (1998) place the FAD of H. planispira below the FAD of P. columnata, as is indicated at Piobbico and at the reference sections in SE France; thereforehad assigned as 50% up in H. jacobi Zone.  "Gap zone" (LAD at base; FAD at top).

comp notes

Apollonov, M. K., et al. (1992). Paleomagnetic scale of Upper Cambrian and Lower Ordovician in Batyrbai section (Lesser Karatau, southern Kazakhstan). Izvestiya Akademii Nauk Kazakhskoy SSR. Seriya Geologicheskaya 4(326): 51-57. gs

Bignot, G. & Janin, M. -C. (1984). Découverte de Globuligerina oxfordiana (Foraminifères planctonique) dans le Bajocien stratotypique de la Falaise des Hatcheetts (Sainte-Honorine-de-Pertes, Calvados, France). Comptes rendus de l'Académie des sciences, Paris. 298: 751-756. gs

Blow, W. H. (1969). Late middle Eocene to Recent planktonic foraminiferal biostratigraphy. In, Brönnimann, P. , and Renz, H. H. (ed.) Proceedings of the First International Conference on Planktonic Microfossils (Geneva, 1967). E.J. Brill, Leiden 199-422. gs

Blow, W. H. (1979). The Cainozoic Globigerinida; A Study of the Morphology, Taxonomy, Evolutionary Relationships and the Stratigraphical Distribution of some Globigerinida (Mainly Globigerinacea), Vols. 1 3. Leiden:. E.J. Brill, Leiden. 1-1413. gs

Caron, M. (1985). Cretaceous planktonic foraminifera. In, Bolli, H. M. , Saunders, J. B. , and Perch-Nielsen, K. (ed.) Plankton Stratigraphy. Cambridge University Press, Cambridge 17-86. gs

Erba, E., Premoli Silva, I. & Watkins, D. K (1995). Cretaceous calcareous plankton biostratigraphy of Sites 872 through 879. Proceedings of the Ocean Drilling Program, Scientific Results. 144: 157-169. gs

Gradstein, F. M., et al. (2017). The planktonic foraminifera of the Jurassic. Part II: Stratigraphy, palaeoecology and palaeobiogeography. Swiss Journal of Palaeontology. 136: 259-271. 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

Stam, B. (1986). Quantitative analysis of Middle and Late Jurassic Foraminifera from Portugal and its implications for the Grand Banks of Newfoundland. Utrecht Micropaleontological Bulletin. 34: 1-167. gs

Wade, B. S., et al. (2011). Review and revision of Cenozoic planktonic foraminiferal biostratigraphy and calibration to the geomagnetic polarity and astronomical time scale. Earth-Science Reviews. 104: 111-142. gs

	interval above:	M. renilaevis pfZ
parent-intervals:	this interval:	M. miniglobularis pfZ	sub-intervals:
	interval below:	P. rohri pfZ

intervalx:	M. miniglobularis pfZhas added abv?yesid: 3519 sort:
alternative_term:	M. miniglobularis zoneblock label:
formal term:	Microhedbergella miniglobularis pfZ
interval_type:
parent_interval:
dataset:	forams - planktic (dataset id = 10)
alt dataset:	(dataset id = )
TSC Column:	id:104
stage:
colour:
interval_notes:	DASHED -- Base of former H. planispira foraminifer zone (assumed "LAD" of T. bejaouaensis, now P. eubejaouaensis" definition is used by them?) is 31.4 long-eccentricity cycles below top of Albian (Huang et al, 2010; and Wendy Zhang, 2019) at Piobbico. Brian Huber (to J.Ogg; 15Aug11 "Note that there is no longer a planispira zone because true planispira did not evolve until the late Albian!") Calibrations of other authors are inconsistent -- the base of the H. planispira Zone is placed ABOVE base of P. columnata in Leckie et al. (2002), middle of H.jacobi ammonite zone of Late Aptian (Herle et al., 2004) and much higher as the middle of Lower Albian by Bellier et al. (2000) -- and other assignments are briefly reviewed in Petrizzo et al. (Newsletters of Stratigraphy; in press 2011). However, Hardenbol et al. (1998) place the FAD of H. planispira below the FAD of P. columnata, as is indicated at Piobbico and at the reference sections in SE France; thereforehad assigned as 50% up in H. jacobi Zone. "Gap zone" (LAD at base; FAD at top)
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

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