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The siliciclastics/carbonates shift in the Jurassic of the Western Caucasus (central northern Neo-Tethys): reconsidering research over the last 50 years

the Jurassic: The Caucasian Sea and the Neotethys Ocean. Geološki anali Balkanskoga poluostrva 67, 1-11. Ruban, D.A., 2008a. The Jurassic events in the Greater Caucasus basin (central Northern Neotethys) and the Neuquen basin (West Gondwana): A comparison. Re-vista de Asociación Geológica Argentina 63, 766-775. Ruban, D.A., 2008b. Jurassic maximum flooding surfaces in the Greater Caucasus Basin (Northern Neo-Tethys). Central European Geology 51, 99-112. Ruban, D.A., 2010a. Spatio-temporal patterns of the major Bathonian (Middle Jurassic

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Recharge and dynamics of a karst groundwater system in Kakheti (Eastern Georgia)

Abstract

Monitoring temporal variations of 18O and 2H isotopes in precipitation, groundwater and surface water was performed in the region of Kakheti (East Georgia). Data were collected from three meteorological stations at altitudes between 400 - 1,100 m a.s.l., from two shallow and one deep hydrogeological boreholes, and from two surface water monitoring stations (Alazani River and Patmasuri karstic stream). 18O values in precipitation show an annual variation between -22 ‰ and +1 ‰ and a distinct altitude effect. A clear correlation exists between the seasonal isotope composition of precipitation, shallow groundwater and surface water. A five-fold amplitude dampening and a delay of 10-15 days was observed. The data show that precipitation in the Caucasus Mountains to the North infiltrates into the Upper Jurassic - Lower Cretaceous karstic aquifer and travels to the Alazani valley towards south-east. The isotopic signature of winter precipitation is reflected in stream water as well as in shallow groundwater isotope data of groundwater in a 2,000-m-deep hydrogeological borehole at Heretiskari show a distinctly different character with δ18O ranging between -2.8 ‰ to -2.2 ‰ and a deuterium excess of -25 ‰.

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A new type of slumping-induced soft-sediment deformation structure: the envelope structure

on a steep-gradient delta slope. Sedimentary Geology 98, 97–119. Kim, S.B., Chough, S.K. & Chun, S.S., 2003. Tectonic controls on spatio-temporal development of depositional systems and generation of fining-upward basin fills in a strike-slip setting: Kyokpori Formation (Cretaceous), south-west Korea. Sedimentology 50, 639–665. Ko, K., Park, S. & Kwon, C.W., 2015. Soft-sediment deformation structures in the Cretaceous Gyeokpori Formation of the Buan area, Korea: Structural characteristics, reconstruction of paleoslope and triggering mechanism of

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Factors influencing temporal changes in chemical composition of biogenic deposits in the middle Tążyna River Valley (Kuyavian Lakeland, central Poland)

-Shonberg, C.D. & Nellen, W., 2001. Spatial and Temporal Variability of Limnological Processes. [In:] J.D. Tenhunen, R. Lenz & R. Hantschel (Eds): Ecosystem Approaches to Landscape Management in Central Europe. Ecological Studies 147, 117-162. Ralska-Jasiewiczowa, M., van Geel, B. & Demske, D., 1998. Holocene regional vegetation history recorded in the Lake Gościąż sediments [In:] M. Ralska-Jasiewiczowa, T. Goslar, T. Madeyska & L. Starkel (Eds): Lake Gościąż, Central Poland. A monography study. P. 1. W. Szafer Institute of Botany, Polish Academy of Sciences

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Crustal geomagnetic field and secular variation by regional and global models for Austria

Abstract

Using 12-year-long series of data (2001-2012) from geomagnetic observatories and repeat stations in Austria and its neighboring countries, a regional spatial-temporal (ST) model is developed based on the polynomial expansion consisting of latitude, longitude, and time of the geomagnetic field components and total magnetic field F. Additionally, we have used three different global models (CHAOS-5, POMME-9, and EMM2015), which are built on spherical harmonics up to a maximum degree Lmax and give the core field and crustal field separately. The normal field provided by the ST model and its “model bias”, which comprise the residuals of the differences between measured and predicted values, are calculated and the respective maps are shown. The residuals are considered an estimate of the local crustal field. In the case of global models, we have applied for each of these three methods to calculate the “model bias”: residuals of the differences between observed values and predicted values of the model, residuals of the differences between observed values and core field values of the model, and the average bias for the period 2001-2012. The normal field of the region of Austria provided by each global model is also calculated. Generally, the regional and global models yield relatively similar crustal fields for the Austrian region, especially when the first method is used. The normal fields calculated by them are in good agreement with each other. Each of the global models directly provides the crustal field, and they are compared with the aeromagnetic data provided by aeromagnetic surveys over the Austrian region. The ST model is in better agreement with aeromagnetic data. We have also analyzed the secular variation over the region, which is calculated from the rate of change of normal field given by the ST and global models.

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First find of biogenic activity in the Palaeoproterozoic of the Singhbhum craton (E India)

.R., Bhattacharya, H.N., Misra, S., Dasgupta, N. & Altermann, W., 2007. New SHRIMP U-Pb zircon dates from the Singhbhum craton, Jharkhand-Orissa region, India. [In:] S. Banerjee (Ed.): Abstracts International Conference on Precambrian Sedimentation & Tectonics & 2nd GPSS Meeting , Indian Institute of Technology, Bombay, 2009, 47. Noffke, N., 2010. Geobiology - Microbial mats from the Archean era to today . Springer-Verlag, Berlin, 194 pp. Reddy, S.M., Clarke, C. & Mazumder, R., 2009. Temporal constraints on the evolution of the Singhbhum Crustal

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Heavy-mineral analysis as a tool in tephrochronology, with an example from the La Sal Mountains, Utah, U.S.A.

Bandelier Tuff and San Diego Canyon ignimbrites, Jemez Mountains, New Mexico: temporal constraints on magmatic evolution. Journal of Volcanology and Geothermal Research 43, 175-193. Stöhr, W.T., 1963. Der Bims (Trachyttuff), seine Verlagerung, Verlehmung und Bodenbildung (Lockerbraunerden) im südwestlichen Rheinischen Schiefergebirge. Notizblatt des hessischen Landesamtes für Bodenforschung 91, 318-337. Terhorst, B., 2007. Periglacial cover beds and soils in landslide areas of SW-Germany. Catena 71, 467-476. Þórarinsson

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Predictive diagenetic clay-mineral distribution in siliciclastic rocks as a tool for identifying sequence boundaries in non-marine successions: the Coalspur Formation, west-central Alberta

: integrating paleopedology and sequence stratigraphy. Geology 26, 387-390. Miall, A. D., 1997. The geology of stratigraphic sequences. Springer-Veralg, Berlin, 433 pp. Morad, S., Ketzer, J. M., De Ros, L. F., 2000. Spatial and temporal distribution of diagenetic alterations in siliciclastic rocks: implications for mass transfer in sedimentary basins. Sedimentology 47, 95-120. Nurkowski, J. R., 1984. Coal quality, coal rank variation and its relation to reconstructed overburden, Upper

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From carbonate platform to euxinic sea – the collapse of an Early/Middle Devonian reef, Cantabrian Mountains (Spain)

significance. Trabajos de Geología 17, 57-66. Loevezijn, G.B.S. van, 1989. Extinction patterns for the Middle-Upper Devonian stromatoporoid coral reefs; a case study from the Cantabrian Mountains. Proceedings Koninklijke Nederlandse Akademie van Wetenschappen B 92, 61-74. Lotze, F., 1945. Zur Gliederung der Varisziden in der Iberischen Meseta. Geotektonische Forschungen 6, 78-92. Lüning, S., Wendt, J., Belka, Z. & Kaufmann, B., 2004. Temporal-spatial reconstruction of the early Frasnian (Late Devonian) anoxia in NW Africa: new

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Did plate tectonics control the generic diversity of Jurassic brachiopods? One point of view

. Geološki anali Balkanskoga poluostrva 67, 1–11. Ruban, D.A., 2010a. Palaeoenvironmental setting (glaciations, sea level, and plate tectonics) of Palaeozoic major radiations in the marine realm. Annales de Paléontologie 96, 143–158. Ruban, D.A., 2010b. The Permian/Triassic mass extinction among brachiopods in the Northern Caucasus (northern Palaeo-Tethys): A tentative assessment. Geobios 43, 355–363. Ruban, D.A., 2010c. Spatio-temporal patterns of the major Bathonian (Middle Jurassic) hiatus in the Greater Caucasus Basin (Northern Neo-Tethys Ocean

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