Climatic instability before the Miocene Climatic Optimum reflected in a Central European lacustrine record from the Most Basin in the Czech Republic

Grygar, Tomáš Matys; Hošek, Michal; Mach, Karel; Schnabl, Petr; Martínez, Mathieu

doi:10.1016/j.palaeo.2017.08.011

Cited by 27 publications

(53 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The concentration of the less mobile K, usually in geochemically normalised form such as the K/Al ratio, could thus provide the most straightforward weathering proxy under temperate to warm climates, as it was demonstrated for marine sediments deposited close to river estuaries (Clift et al, 2014;Zhao et al, 2018), continental foreland basins (Vögeli et al, 2017), continental basins in semiarid climates (Foerster et al, 2015(Foerster et al, , 2018, and freshwater lakes (Matys Grygar et al, 2014, 2017a, 2017b. The K concentrations in sediment profiles, covering sufficiently long time interval, may exhibit orbital signatures, which prove their climatic control (Colin et al, 2014;Foerster et al, 2015Foerster et al, , 2018Matys Grygar et al, 2014, 2017a, 2017b, 2019.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, continental archives seem underrepresented in climate reconstructions, although they could overcome a problem like a widespread hiatus in marine sediments from the periods tightly preceding the Miocene Climatic Optimum (MCO) (Miller et al, 2017), which hinders correlation of existing sedimentary records, dating of the MCO triggers, and their identification. The continental archives of the MCO are, however, rare (Matys Grygar et al, 2014, 2017bSun et al, 2015). The use of normalised K concentrations in fine siliciclastic sediments represent an opportunity for broader future use of continental sediments.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Checklist for the use of potassium concentrations in siliciclastic sediments as paleoenvironmental archives

Grygar

Mach²,

Martínez

2019

Sedimentary Geology

Self Cite

View full text Add to dashboard Cite

Weathering indices quantify the release of mobile elements from source units of soils and sediments. They have been employed in geosciences for more than three decades, but their performance in sedimentary archives can still be improved by deciphering other forcing factors than climatic. From the most common alkali and alkaline earth metals included in the weathering indices, K seems to be most suitable for deciphering paleoclimate records of temperate to subtropical non-arid climates, assuming the interpretation respects the complex of controlling factors on sediment geochemistry. As a case study, normalised K concentrations in siliciclastic sediments of the Most Basin (Miocene period, central Europe) are revisited here and variations compared with modern fluvially transported solids. Existing knowledge on manifold controls of K concentrations in sediments is summarised and used to propose list of possible controlling factors, in particular Al/Si and Zr/Rb as grain-size proxies, Ti/Al as provenance proxy relevant for K concentration in parent rocks,

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Checklist for the use of potassium concentrations in siliciclastic sediments as paleoenvironmental archives

Grygar

Mach²,

Martínez

2019

Sedimentary Geology

Self Cite

View full text Add to dashboard Cite

show abstract

“…Potassium is easily leached by weathering processes, whereas Ti is considered rather stable, thus weathering in the hinterland might be an important factor controlling K/Ti. Since the study area of the LSB is relatively small it is likely that the observed changes occur synchronous among the studied sites (Matys Grygar et al, 2017). The overlapping intervals of the studied cores show similar K/Ti variations and trends and a marked triple peak in the K/Ti profiles situated slightly above the Valanginian-Hauterivian boundary provides an unequivocal tie point for correlation.…”

Section: Chemostratigraphic Correlationmentioning

confidence: 68%

“…The elemental K/Ti ratio has been used in other studies as an indicator of weathering and erosion intensity (Muhs et al, 2001;Piva et al, 2008;Arnaud et al, 2012;Matys Grygar et al, 2017, 2019 or for provenance | 241 The elemental K/Ti ratio has been used in other studies as an indicator of weathering and erosion intensity (Muhs et al, 2001;Piva et al, 2008;Arnaud et al, 2012;Matys Grygar et al, 2017, 2019 or for provenance | 241…”

Section: Chemostratigraphic Correlationmentioning

confidence: 99%

“…Variations and trends in selected XRF elemental ratios in combination with the established chronostratigraphic framework allowed a precise chemostratigraphic correlation among sites. The elemental K/Ti ratio has been used in other studies as an indicator of weathering and erosion intensity (Muhs et al, 2001;Piva et al, 2008;Arnaud et al, 2012;Matys Grygar et al, 2017, 2019 or for provenance | 241…”

Section: Chemostratigraphic Correlationmentioning

confidence: 99%

See 1 more Smart Citation

Using high‐resolution XRF analyses as a sequence stratigraphic tool in a mudstone‐dominated succession (Early Cretaceous, Lower Saxony Basin, Northern Germany)

Thöle

Bornemann

Heimhofer

et al. 2019

The Depositional Record

View full text Add to dashboard Cite

Delineation of stratigraphic sequences and their component systems tracts in mud-stone-dominated successions is challenging due to the relatively homogenous, finegrained nature of the strata. High-resolution elemental intensity data from X-ray fluorescence core scanning is used in order to develop a sequence stratigraphic framework for the Lower Cretaceous monotonous mudstone succession in the eastern Lower Saxony Basin. The study is based on four drill cores covering the Berriasian to Aptian interval. In addition, carbon isotope (δ 13 C org ), grain size and CaCO 3 analyses were carried out on discrete samples. The studied cores represent both proximal and distal basinal environments of the eastern Lower Saxony Basin and can be reliably correlated by utilizing variations in selected X-ray flourescence elemental ratios, K/Ti data have proven to be particularly suitable in this regard. The core correlation shows that chemostratigraphic variability within the studied succession is laterally reproducible in the eastern Lower Saxony Basin, and can be used to establish a sequence stratigraphic framework. Further, Si/Al and Ca/Ti ratios have been applied to characterize the cores in terms of variation in grain size and CaCO 3 content, respectively. Vertical grading trends inferred from Si/Al changes were used to identify transgressive and regressive systems tracts within the studied succession. An important regression in the uppermost lower Valanginian coincides with the onset of the Valanginian Weissert Event, as indicated by the well-known positive δ 13 C shift, and, thus, supports the idea that the initial interval of this event corresponds to enhanced supply of terrigenous material. The results of this study are also in agreement with previously recognized transgressive-regressive trends in the Lower Saxony Basin and adjacent areas. This clearly shows that systematic geochemical variations recorded in mudstone-dominated basinal settings are suitable to establish sequence stratigraphic frameworks. K E Y W O R D SLower Cretaceous, Lower Saxony Basin, mudstones, sequence stratigraphy, Weissert Event, X-ray fluorescence core scanning | 237 THÖLE ET aL.

show abstract

Paleontological and lithological evidence of the late Karpatian to early Badenian marine succession from Medvednica Mountain (Croatia), Central Paratethys

Fuček¹,

Galović

Mikša³

et al. 2022

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

Climatic instability before the Miocene Climatic Optimum reflected in a Central European lacustrine record from the Most Basin in the Czech Republic

Cited by 27 publications

References 57 publications

Checklist for the use of potassium concentrations in siliciclastic sediments as paleoenvironmental archives

Checklist for the use of potassium concentrations in siliciclastic sediments as paleoenvironmental archives

Using high‐resolution XRF analyses as a sequence stratigraphic tool in a mudstone‐dominated succession (Early Cretaceous, Lower Saxony Basin, Northern Germany)

Paleontological and lithological evidence of the late Karpatian to early Badenian marine succession from Medvednica Mountain (Croatia), Central Paratethys

Contact Info

Product

Resources

About