Results 81 to 90 of about 1,885,987 (306)

Tectono‐Sedimentary Evolution of the Neogene İnegöl Basin (NW Anatolia): Constraints on Transtensional Basin Development at the Junction of the Western Anatolian Extensional Province and the North Anatolian Fault Zone

Geological Journal, EarlyView.
The study outlines the tectono‐sedimentary evolution of the İnegöl Basin in north‐western Anatolia. Basin formation was controlled by interacting extensional and strike‐slip fault systems linked to uplift of the Uludağ Massif. Terrestrial sedimentation from the Miocene to Pleistocene is reconstructed using abundant fossil mammal assemblages that ...
M. Cihat Alçiçek, Volkan Karabacak, Serdar Mayda   +2 more
wiley   +1 more source

Impact of CO₂ and pH on the distribution and stable carbon isotopic composition of microbial biomarker lipids [PDF]

, 2013
In addition to the more acknowledged consequences of climate change, such as global warming, the current human-induced increase of CO2 into the atmosphere is also responsible for a change in the chemical composition of seawater.
Schoon, P.L., Organic geochemistry & molecular biogeology, Organic geochemistry   +2 more
core   +1 more source

Quaternary ecological responses and impacts of the Indian Ocean Summer Monsoon at Nam Co, Southern Tibetan Plateau [PDF]

, 2015
The transition from the Last Glacial to the current Interglacial, the Holocene, represents an important period with climatic and environmental changes impacting ecosystems. In this study, we examined the interplay between the Indian Ocean Summer Monsoon (
Zhu, Liping, Organic geochemistry & molecular biogeology, Xue, B., Zhue, L., Schouten, S., Organic geochemistry, Xu, B.Q., Xu, B., Günther, F., Zhu, L., Schouten, Stefan, Yao, T., Mausbacher, R., Daut, G., Gleixner, G., Yaoe, T., Witt, R.   +16 more
core   +2 more sources

Local Structures of Se and Br in Cretaceous–Paleogene Boundary Sediments and Concentration Effects of Ferrihydrite Originating From Impact Ejecta

Geological Journal, EarlyView.
Chemical states of Se and Br atoms in the KPg boundary sediments from Stevns Klint were studied using XAFS spectroscopy. The high concentrations of Se4+ could become an index of the degree to which the global environment was soiled with dust and ash derived from impact ejecta or volcanic eruptions.
Kei‐ichiro Murai, Akira Yoshiasa, Ginga Kitahara, Makoto Tokuda, Satoko Ishimaru, Toshihiro Moriga   +5 more
wiley   +1 more source

Miocene to Quaternary Tectonostratigraphic Evolution of the Northern Section of the Burdur‐Fethiye Shear Zone, South‐Western Türkiye

Geological Journal, EarlyView.
New zircon ages reveal that lacustrine sedimentation initiated in the Late Miocene (Messinian), revising earlier Pliocene age assignments. The study results support the interpretation of the northern BFSZ as a broad left‐lateral transtensional shear zone rather than a discrete sinistral fault or simple extensional graben array.
İrem Elitez, Gürsel Sunal, Cenk Yaltırak, İsak Yılmaz   +3 more
wiley   +1 more source

Lipids as indicators of nitrogen cycling in present and past anoxic oceans [PDF]

, 2018
Nitrogen (N) cycling influences primary production in the ocean and, hence, the global climate. It is performed by a variety of microorganisms, including eukaryotes, bacteria and archaea in oxic, suboxic, and anoxic waters. Our knowledge of the reactions
Sollai, M., Organic geochemistry & molecular biogeology, Organic geochemistry   +2 more
core  

The influence of oxygen exposure time on the composition of macromolecular organic matter as revealed by surface sediments on the Murray Ridge (Arabian Sea) [PDF]

, 2017
The Arabian Sea represents a prime example of an open ocean extended oxygen minimum zone (OMZ) with low oxygenconcentrations (down to less than 2 mM) between 200 and 1000 m water depth.
Sinninghe Damsté, Jaap S., Organic geochemistry & molecular biogeology, Organic geochemistry, Jaap S. Sinninghe Damsté, Sinninghe Damsté, J.S., Nierop, K.G.J., Reichart, G.-J., Harry Veld, Klaas G.J. Nierop, Gert-Jan Reichart, Veld, Harry, Nierop, Klaas G.J., Reichart, Gert-Jan, Veld, H.   +13 more
core   +2 more sources

Edaphic Controls Override Climatic and Management Effects on Soil Organic Carbon in Southern African Agroecosystems

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background Understanding the relative importance of climatic, edaphic, and management controls on soil organic carbon (SOC) is essential for improving SOC prediction and land management in data‐scarce agroecosystems. Aim This study quantified SOC drivers across Southern African agroecosystems using 655 observations covering climatic variables,
Samuel Ayodele Mesele, Abosede B. Babatunde, Andrei Rozanov, Ádám Csorba, Mary Steverink‐Mosugu   +4 more
wiley   +1 more source

A History of Organic Geochemistry [PDF]

Oil & Gas Science and Technology, 2003
Organic geochemistry is the fruit of questions about the origin of petroleum, and for the time being, its development has been closely linked to that of petroleum exploration. It only became an autonomous science shortly after 1960. The years 1965-1985 were extremely productive: during this period, the mechanisms of the formation of oil and natural gas
openaire   +2 more sources

Origin of lipid biomarkers in mud volcanoes from the Alboran Sea, western Mediterranean [PDF]

, 2014
Mud volcanoes (MVs) are the most prominent indicators of active methane/hydrocarbon venting at the seafloor on both passive and active continental margins.
G. J. De Lange, López-Rodríguez, C., Organic geochemistry & molecular biogeology, Stadnitskaia, A., Damste, J. S., Comas, M, Comas, M., Marine geochemistry, Martínez-Ruíz, F., López-Rodríguez, Carmen, Organic geochemistry, C. López-Rodríguez, Sinninghe Damsté, J.S., López-Rodríquez, C., M. Comas, Comas, Mar, De Lange, G.J., Lange, G. J., Martínez-Ruíz, F, Marine geochemistry & chemical oceanography, Martínez Ruiz, Francisca, F. Martínez-Ruíz, A. Stadnitskaia   +22 more
core   +3 more sources