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Verheij, J. (author)In this study seismic wave velocity and seismic wave attenuation in dry Bentheimer sandstone, Indiana limestone, and Whitby shale are studied while continuously deforming and therefore increasingly fracturing the rock samples up until macroscopic failure. A pulse transmission technique at a central frequency of 1 MHz is used in combination with...report 2015
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Smits, K.D. (author)Little research has been done on recent environmental and climatic change in Mexico. This study presents an environmental reconstruction since the Postclassic Era (~ AD 1080) for the southeastern part of Mexico. A lacustrine core from laguna Chicuacan, located in the Grijalva watershed, Tabasco, Mexico has been analyzed on diatom and pollen...report 2015
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Arciszewski, J. (author)The early Eocene was a relatively warm period during with large numbers of tropic and warm-water biotas. Global surface temperature decreased through the Middle Eocene and into the Late Eocene by 4 to 5 degrees (Prothero et al, 1994). At the end of the Late Eocene a much more rapid cooling took place, the Eocene Oligocene transition (EOT)....report 2014
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Keijzer, F. (author)This is a study based on determining the stable isotope composition of fluid inclusions of cold- and warm-water corals from the Bahamas and Curaçao respectively. Geochemical data were obtained using a new online technique called the ‘Amsterdam Device’ which comprises δ2H and δ18O analyses of fluid inclusions with a continuous-flow crushing...report 2014
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Jongerius, M. (author)A good understanding of the reservoir architecture of tough gas reservoirs is necessary to define their potential for the hydrocarbon industry. These tough gas reservoirs have been overlooked until now due to the high economic risks of development. These risks are mainly related to the large uncertainties that exist in the reservoir architecture...report 2014
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Advokaat, Eldert L. (author), van Hinsbergen, Douwe J.J. (author), Kaymakcıc, Nuretdin (author), Vissers, Reinoud L.M. (author), Hendrikse, Bart W. H. (author)https://doi.org/10.1080/00206814.2014.954279report 2014
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Cramwinckel, M.J. (author)Superimposed on the Cenozoic trend from hot to cold climates is a distinct and con- tinuous imprint of the long 405 thousand year (kyr) eccentricity cycle on climate and the carbon cycle. In sediment records from the Early Paleogene to the Pliocene, stable carbon isotopes (δ13C) and oxygen isotopes (δ18O) from benthic and planktonic foraminifera...report 2014
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Rost, E. (author)The Paleocene Tullock formation, located in the North American Western Interior Basin, contains widely distributed coal layer deposits which display various cyclic patterns. The formation of the cyclicity is generally attributed to regional to local tectonic variation processes. However, there are several examples of sediment deposits that are...report 2014
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Hoogenboom, P.E. (author)Lake Awassa is a lake in the Ethiopian Rift Valley and undergoes a water level rise since the last few decades. Local people say that this increase is caused by an increase in surface runoff due to deforestation. Another hypothesis suggests that the water level rise is due to siltation of the lake by erosion and especially gully erosion. To...report 2013
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Broersen, T. (author)This study focused on explaining the spatially variable movement speeds of the Home Hill landslide in Tasmania, Australia, by assessing the landslide’s soil physical properties, in combination with performing a stability analysis using a combination of the hydrological model STARWARS, and a deterministic stability model based on the infinite...report 2013
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Nanne, J.A.M. (author)The Bakhuis Granulite Belt (BGB) in the largest Proterozoic granulite-facies domain in northern South America. A metapelite area of 50-100 km2 in the NE of the belt shows orthopyroxene + sillimanite + quartz ± sapphirine with 8-10wt% Al2O3 in the orthopyroxene, characteristic for ultrahigh-temperature (UHT) metamorphism. Evidence for UHT...report 2013
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Hennekam, J.J. (author)Cuticle analysis is used as a paleo-precipitation proxy in boreal and subtropical environments. Here, this method has been applied successfully in the tropical Maya Lowlands (Tabasco, Mexico). Multiple proxies have already indicated the presence of severe drought episodes during the time of the Maya Collapse. By applying cuticle analysis on...report 2013
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Herder, C. (author)Water is the most essential requirement for all human activities such as drinking, agriculture and power generation. People would not survive without sufficient fresh water of good quality. Planet earth accommodates huge amounts of water, but only 1% is accessible as fresh water in lakes, rivers and aquifers (Jackson et al., 2001). The...report 2013
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oonk, P.B.H. (author)Volcanic crater lakes on Earth and the Martian surface have, at first sight, hardly anything in common. Crater lakes contain liquid water, are often set in andesitic host-rocks and cover a small area, while the Martian surface does not contain liquid water, is basaltic in composition and the scale of the geologic structures is much larger....report 2013
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van der Heijden, L.H. (author)The research included in this manuscript will allow scientists to better assess the impacts of ocean acidification (OA) on net community production and calcification rates. First, I collaborated with the European Free Ocean Carbon Dioxide Enrichment (eFOCE) project. eFOCE aims to better understand and project the impacts of OA by precisely...report 2013
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Kaerts, T. (author)Before the birth and isolation of the Paratethys by the collision of the Eurasian, Indian, African and Arabian plates, a vast amount of water connected the Central Asian basins, ranging from the Tarim Basin in present day western China to the eastern Mediterranean. This was a large shallow sea referred to as the proto-Paratethys. During the...report 2012
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van Wetten, I.A. (author)Cyclic sedimentation caused by orbital forcing has been studied intensively within the marine domain. Within the terrestrial domain however, cycles are less evident which make it less clear whether deposition is orbital forced, but there are indications that this is also the case in the terrestrial domain. In the Purgatory Hill area, north...report 2012
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van Bree, L.G.J. (author)One of the large and increasingly important global problems is coastal eutrophication. Human disturbances includes large-scale fertilizer use which increases the nutrient availability in many coastal areas and can lead to toxic algal blooms or ecosystem turnover. Detecting past human disturbances in an area can improve the understanding of the...report 2012
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van der Boon, A. (author)The Maikop series are composed of a thick succession of black shales, and are considered the most important source rock for hydrocarbons in the Caspian basin. The type section of this formation is located near the city of Maykop in Russia, north of the Greater Caucasus. Corresponding anoxic sediments can be traced in a vast area from Austria to...report 2012
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Bhatt, A.G. (author)This report describes the process and result of a fieldwork project in Bhojpur district, Bihar, India. The project concerns geological research in the state of Bihar, India with the purpose to map the hydrogeochemical variability in space and time related to transport of arsenic in the subsurface. Data obtained and implemented during this...report 2012