Development of successive karstic systems within the Baix Penedès Fault zone (onshore of the Valencia Trough,NW Mediterranean)

The Baix Penedès Fault zone records successive karstic systems. The outcrops studied correspond to different segments of the fault, which were temporarily connected and disconnected, allowing for different diagenetic processes to occur. The first karstic system affected the Mesozoic rocks due to subaerial exposure after Paleogene compression, an event characterized by widespread dissolution and the generation of vug and cavern porosity. The δ¹⁸O values of the dolomitic sediment filling the initial vuggy porosity are similar to those of the host dolomite, indicating that the sediment comes from the erosion and reworking of the host rock. The second karstic system is related to the upward propagation of the Baix Penedès Fault. This deformation was characterized by random‐fracture fabrics with dolomite cement and sediment. The stable isotopes values and Sr/Ca ratios of both the dolomite cement and sediments are similar to those of the host rock. In contrast, the more depleted δ¹³C values indicate the influence of soil‐derived CO₂ and the opening of the system to meteoric waters. During the third karstic event, the δ¹⁸O, δ¹³C, Sr/Ca ratios, and ⁸⁷Sr/⁸⁶Sr values of diagenetic cements suggest a marine signature, indicating that the karstic sediments were dolomitized under the influence of late Burdigalian‐Langhian marine waters. These marine waters were probably expelled from poorly buried sediments and circulated through faults producing dolomitization of the karstic sediments. A final karst system developed during a period of uplift and subaerial exposure. The δ¹⁸O values, the Mg/Ca and Sr/Ca ratios, and the high radiogenic values of the calcite cements formed during this period indicate precipitation from meteoric waters. The results of this study have implications for carbonate hydrocarbon reservoir analogs subject to karstic influence in the Valencia Trough and elsewhere.     

Thermoluminescence Dating of Surface Lithic Artefacts from the Chacabuco Valley,Chilean Patagonia

This work presents several thermoluminescence (TL) dates of six archaeological sites located in the Andean valley of the Chacabuco River, central Patagonia. We discuss the advantages of this method to assess the chronology of human occupations, employing samples of lithic artefacts with evidence of fire exposure from surface contexts in the area. We compare the results with stratigraphic archaeological dating by ¹⁴C. We discuss these results in the context of previously formulated hypotheses on the past behaviour of the human population in this area.     

Une morphologie de la circulation des savoirs la revue depuis 1800

The statistical survey of 1 385 french titles, starting with annales, journal or revue, helps to understand the development of “scientific” journals in France from the beginning of the 19^th century until today. This 200 years history provides perspectives about the growth and decline of publishing. It includes scientific titles within the publishing production and underscores the importance of stimulation of the flow of ideas and information, through frequency and growth analysis.     

Was zählt der Preis? Dogmengeschichte und Wissensgeschichte der Ökonomie

What’s in a Price? History of Economic Ideologies vs. History of Economic Ideas. This paper suggests applying the approach of a historical epistemology to the field of economics. We observe that an assumedly fundamental opposition between the market and the state dominates popular images of the history of economic ideas. Two conflicting ideologies are roughly assigned to the two opposing sides in the Cold War. To this historical narrative the paper opposes a different view. The argument is that when taking the technical practices of economic knowledge production in the twentieth century into view, similarities abound across ideological ruptures. The chief characteristic change in the recent history of economics was a radical turn towards quantification, measurement, and mathematical modelling. A historical epistemology of economics could show how deeply both, admirers of the state and of the market, share a history. The paper concludes that to-date critique of political economy should also take into consideration a critical perspective towards the unfolding of this measurement revolution in the social sciences.