Palaeo- and rock-magnetic investigations across Jurassic-Cretaceous boundary at St Bertrand’s Spring, Drôme, France: applications to magnetostratigraphy

Elbra, Tiiu; Schnabl, Petr; Čížková, Kristýna; Pruner, Petr; Kdýr, Šimon; Grabowski, Jacek; Reháková, Daniela; Svobodová, Andrea; Frau, Camille; Wimbledon, William A.P.

doi:10.1007/s11200-016-8119-5

Cited by 14 publications

(7 citation statements)

References 28 publications

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“…All formerly investigated sections in the NCA are localized in the Tirolic units and reveal multiphase, syntectonic remagnetization (Pueyo et al 2007). However, our results from a Tithonian-Berriasian deep-water succession in the Salzburg area confirmed preservation of primary magnetization (Grabowski et al 2017). Detailed sampling of relatively undeformed latest Tithonian to Early Valanginian succession (Krische et al 2013) was performed in the Leube quarry SW of Salzburg.…”

Section: Introductionsupporting

confidence: 70%

How Magnetic Susceptibility Reflects the Distribution of Major and Trace Elements in Forest Andosols in the French Massif Central

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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Section: Introductionsupporting

confidence: 70%

How Magnetic Susceptibility Reflects the Distribution of Major and Trace Elements in Forest Andosols in the French Massif Central

2018

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

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“…Here we assume the sedimentation rate to be 2.5 cm ka −1 . Although there are no data on actual sedimentation rates in the Pimienta Fm., this rate is realistic for similar coeval deposits (e.g., Grabowski et al, 2011) as well as with the tectonic and environmental stability of the Sierra Madre Oriental in the Tithonian-Berriasian stages (Padilla and Sánchez, 2007). It is worth noting that our new data allow only a confident numerical age for the Elliptica Subzone (Fig.…”

Section: Calcareous Nannofossil Biostratigraphy In Mazatepecmentioning

confidence: 67%

“…The interval encompasses ∼ 1000 km of oceanic crust over a period of ∼ 35 Myr in the northwestern Pacific. The age of the polarity changes in the northwestern Pacific was dated by key fossiliferous da-tums from Mediterranean Tethys sedimentary sequences via the correlation with magnetostratigraphy in these sequences (Grabowski, 2011;Kent and Gradstein, 1985;Ogg et al, 1991;Ogg and Lowrie, 1986). The duration of the magnetic reversal changes are provided by cyclostratigraphic studies (Huang et al, 2010a, b) for some of the magneto-zone intervals and thus used to calculate a decreasing spreading rate with the distance associated with the magneto-anomalies in the Hawaiian spreading center.…”

Section: Introductionmentioning

confidence: 99%

High-precision U–Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic–Cretaceous boundary

et al. 2019

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Abstract. The numerical age of the Jurassic–Cretaceous boundary has been controversial and difficult to determine. In this study, we present high-precision U–Pb geochronological data around the Jurassic–Cretaceous boundary in two distinct sections from different sedimentary basins: the Las Loicas, Neuquén Basin, Argentina, and the Mazatepec, Sierra Madre Oriental, Mexico. These two sections contain primary and secondary fossiliferous markers for the boundary as well as interbedded volcanic ash horizons, allowing researchers to obtain new radioisotopic dates in the late Tithonian and early Berriasian. We also present the first age determinations in the early Tithonian and tentatively propose a minimum duration for the stage as a cross-check for our ages in the early Berriasian. Given our radioisotopic ages in the early Tithonian to early Berriasian, we discuss implications for the numerical age of the boundary.

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“…The studied sections consists of well-bedded mostly micritic limestone with minor bioclastic interlayers. In the upper parts of all studied sections there are intercalations of marl (Elbra et al 2017). In the Le Chouet, Charrens and the St Bertrand section there are intrabasinal breccias, which have been omitted from further evaluation.…”

Section: Introductionmentioning

confidence: 93%

Magnetic Anisotropy of Ferromagnetic Grains – Comparison of Different Methods

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 countriesCzech 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 colleagues -acting 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 PREFACE 2 this size, with relaxed atmosphere and participants from about 25 countries worldwide, combining various ages and cultures. It will be always my grea...

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Palaeo- and rock-magnetic investigations across Jurassic-Cretaceous boundary at St Bertrand’s Spring, Drôme, France: applications to magnetostratigraphy

Cited by 14 publications

References 28 publications

How Magnetic Susceptibility Reflects the Distribution of Major and Trace Elements in Forest Andosols in the French Massif Central

How Magnetic Susceptibility Reflects the Distribution of Major and Trace Elements in Forest Andosols in the French Massif Central

High-precision U–Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic–Cretaceous boundary

Magnetic Anisotropy of Ferromagnetic Grains – Comparison of Different Methods

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