Revision of the ammonite index species Berriasella jacobi Mazenot, 1939 and its consequences for the biostratigraphy of the Berriasian Stage

Frau, Camille; Bulot, Luc G.; Reháková, Daniela; Wimbledon, William A.P.; Ifrim, Christina

doi:10.1016/j.cretres.2016.05.007

Cited by 24 publications

(9 citation statements)

References 17 publications

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“…When known, suture lines develop long and more or less symmetrical ventral and first lateral lobes while other ones are small. Praedalmasiceras (Lehmann et al, 2015;Frau et al, 2016aFrau et al, , 2016bFrau et al, , 2016c. This assemblage has no equivalent in the Boreal subprovinces at that time due to paleogeographic restriction (Lehmann et al, 2015).…”

Section: Diagnosismentioning

confidence: 99%

“…Research conducted in the past several years within the Berriasian Working Group of the International Subcommission on Cretaceous Stratigraphy questions such systematics and correlation. It has been demonstrated that the provincialism of the neocomitid and himalayitid ammonites is higher than previously assumed in the literature, and that homeomorphy has led to erroneous taxonomic interpretations (see Bulot et al, 2014;Frau et al, 2015Frau et al, , 2016aFrau et al, , 2016bFrau et al, , 2016cLehmann et al, 2015). In particular, a re-examination of the Russian literature leads us to challenge the occurrence of western Tethyan-derived ammonites in the 'Ryazanian' deposits, as testified by the systematic re-assessment provided in the present contribution.…”

Section: Introductionmentioning

confidence: 98%

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Berriasian ammonites of supposed Tethyan origin from the type ‘Ryazanian’, Russia: a systematic re-interpretation

et al. 2021

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Section: Diagnosismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Berriasian ammonites of supposed Tethyan origin from the type ‘Ryazanian’, Russia: a systematic re-interpretation

et al. 2021

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Section: Introductionmentioning

confidence: 94%

Magnetostratigraphic Correlation around the Jurassic-Cretaceous Boundary in the Vocontian Basin, France

2018

Publs. Inst. Geophys. P.A.S.

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PrefaceDear Colleagues, This year we have the pleasure to attend already the 16th "Castle Meeting" on Paleo, Rock and Environmental Magnetsim. Although 16 is not the right reason to celebrate, these meetings started exactly 30 years ago as meeting on Paleomagnetism, Rock Magnetism and Database Usage.The very first one was held in Liblice (Czechoslovakia) in 1988, being motivated by discussions held during the International Association for Geomagnetism and Aeronomy (IAGA) Assembly in 1985 in Prague. Actually, since the beginning in 1988, the meetings have been recognized by and sponsored by IAGA. I remember the first one in 1988 pretty well -I gave my very first oral presentation on paleomagnetism of rocks from Cap de Chevre (France). My shirt got completely wet and I had barely idea what I was tolking about. However, I met several great personalities in our field of research, such as legendary Vit Jelinek (who otherwise practically did not attend any meetings). One year later, in 1989, the political situation in our country changed dramatically. This change resulted in exit of several of my co-workers, including my supervisor, to private business and I was left almost alone with the decision of the first meeting to continue the organization of these events on regular bi-annual basis. Thus, I had to organize the second one in 1990 in Bechyne. At that meeting we agreed with colleagues from Bratislava (Slovakia) to hold the meetings alternately in both new countries -Czech and Slovak Republics (see the list of meetings held until now at the end of this text). As a result, it has been my privilege and great pleasure to organize, or be at hand to organizers, of these great meetings for 3 decades.These meetings got a worldwide reputation in particular for the atmosphere, which has always combined scientific work with excellent social programme, consisting of local tours, cultural performances, food and drinks tasting, etc. I especially appreciate very much that the attendees varied from regular, well recognized experts to young Ph.D. (or even master) students; many of the latter ones developed later on to well established and known scientists. All the participants easily got the idea that the meetings represent ideal training for young colleaguesacting as chairs of sessions, being evaluated for their performance and nominated for the IAGA award, etc. And one could not count how many working cooperations, projects and good personal friendships were established at these meetings. To conclude, we successfully "survived" three decades of these bright events. Four years ago we moved for the first time outside former Czechoslovakia and no doubts local organizers (Pedro Silva in Portugal in 2014 as well as Simo Spassov in Belgium in 2016) proved that they got these meetings deeply uder their skin. I only wish this trends remains also for the future, having meetings of A b s t r a c t This work aims to evaluate the use of thermomagnetic curves to identify the presence of iron oxyhydroxysulfates (jarosite type minerals) by thei...

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“…In the Le Chouet, Charrens and the St Bertrand section there are intrabasinal breccias, which have been omitted from further evaluation. Preliminary results on the distribution of the age-diagnostic ammonite taxa show that Belvedere and St. Bertrand span most of the B. jacobi Zone auctorum, and the Le Chouet and Charens profile starts in the Microcanthum ammonite zone (Wimbledon et al 2013, Frau et al 2016.All the sections show a sequence of magnetostratigraphic normal and reverse polarity zones. The base of C. alpina zone and the FAD of Nannoconus wintereri fall in a normal polarity zone, which is thus identified as M19n.…”

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confidence: 99%

The Frequency of Geomagnetic Polarity Reversals in the Carboniferous: Insight into Earth’s Deep Interior

2018

Publs. Inst. Geophys. P.A.S.

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Revision of the ammonite index species Berriasella jacobi Mazenot, 1939 and its consequences for the biostratigraphy of the Berriasian Stage

Cited by 24 publications

References 17 publications

Berriasian ammonites of supposed Tethyan origin from the type ‘Ryazanian’, Russia: a systematic re-interpretation

Berriasian ammonites of supposed Tethyan origin from the type ‘Ryazanian’, Russia: a systematic re-interpretation

Magnetostratigraphic Correlation around the Jurassic-Cretaceous Boundary in the Vocontian Basin, France

The Frequency of Geomagnetic Polarity Reversals in the Carboniferous: Insight into Earth’s Deep Interior

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