The Late Cambrian Steptoean Positive Carbon Isotope Excursion marks a time of significant change in ocean chemistry and trilobite faunas. On the lead up to carbon isotope excursion at itself, there is global evidence from Laurentia Gondwana cementation by primary aragonite shallow subtidal environments accompanied deposition aragonitic ooids. However, this occurred widely considered have been c...

The buried soil above the Goodwood-Slindon Raised Beach running along foot of South Downs (Sussex) is one most extensive Lower Palaeolithic land surfaces known. It extends for 16 km but exposures are limited to Boxgrove, focus archaeological excavations since 1980s, and Valdoe, 4.8 west. palaeosol yielded vertebrates suggesting attribution Marine Isotope Stage (MIS) 13 snails important in recon...

Preferred orientation of minerals hitherto has been studied almost exclusively in metamorphic and igneous rocks, which show the most spectacular effects of deformation or magmatic flow. In sediments, preferred orientation of grains controlled by their shape has been discussed by Sander,' but to our knowledge no one has ever reported preferred orientation produced by deformation under diagenetic...

We conducted geochronologic and pollen analyses from sediment cores collected in solution holes within marl prairies of Big Cypress National Preserve to reconstruct vegetation patterns of the last few centuries and evaluate the stability and longevity of marl prairies within the greater Everglades ecosystem. Based on radiocarbon dating and pollen biostratigraphy, these cores contain sediments d...

El presente trabajo aporta una investigación arqueométrica sobre piezas cerámicas de los siglos III-I a. C. halladas en contextos alfareros la ciudad Sevilla (Palacio Arzobispal) y Carmona (zona del Arrabal), pertenecientes su mayoría a ánforas tradición púnica turdetana, o bien ya romanizadas. Entre principales objetivos se ha pretendido caracterización tecnológica composicional, comparación l...

One hundred and forty-four published successions of shallow-water carbonates, deposited between the Palaeocene Miocene, from Levant to Himalayas, have been re-analysed using a standardised approach investigate distribution carbonate facies carbonate-producing organisms. Large benthic foraminifera were found be volumetrically most important group producers during whole period, with peak in abund...

Abstract Calcareous nannofossils are < 30 µm sized calcitic fossil remains of single-celled marine photoautotrophic algae. Carbonate-rich sedimentary rocks, containing these fossils, used as raw material for lime-based mortars. The carbonates (CaCO 3 ) heated up to approx. 900 °C. burning process, which causes the thermal decomposition CaCO into CaO (= quicklime) and CO 2 , destroys fossils....

Palaeozoic hypercalcified sponges were ubiquitous Ordovician—Devonian reef builders but, despite their rich fossil record, original skeletal mineralogy and microstructure remain poorly understood. This study provides the first application of electron backscatter diffraction (EBSD) to analyse structure Silurian Devonian stromatoporoids. The two stromatoporoid taxa selected are typical stromatopo...

The Yacoraite Formation (Salta rift, Argentina) consists of Maastrichtian–Danian lacustrine carbonate and siliciclastic deposits with interbedded volcanic ash layers, organized in four third-order stratigraphic sequences. It offers the exceptional opportunity to jointly apply situ zircon U-Pb laser ablation-inductively coupled plasma mass spectrometry geochronology that resulted two distinct de...

Ostracoda are a minor but recurrent component of Southern Ocean marine carbonate factories, and their low-Mg calcitic skeletal mineralogy helps in ensuring noteworthy post-mortem resilience. Our study, based upon surface sediment occurrences, contributes to the better definition distribution vs. potential controlling factors Antarctic waters. The ostracod fauna from Western Ross Sea Shelf appea...