Results 71 to 80 of about 50,853 (257)
The Depositional Record, EarlyView.Analysing Rare Earth Elements (REEs) and other trace elements together with stable isotope data in poorly preserved belemnites can provide valuable insights into early diagenetic pathways, water‐interaction processes, and even potential redox conditions.
Merve Özyurt
wiley +1 more source
The Depositional Record, EarlyView.Five large Alpine cave systems on the Dachstein (Austria) were investigated and 35 sediment profiles or outcrops between 860 m a.s.l. and 1945 m a.s.l. were analysed. An altitude‐dependent overall stratigraphy is established and depositional conditions and palaeo‐environments are reconstructed.
Franziska Holzer +2 more
wiley +1 more source
The Depositional Record, EarlyView.This study integrates sedimentological and ichnological data to reveal the depositional processes and environmental conditions of deep‐water muddy gravity flows in the Mobarak Formation. It highlights distinct ichnocoenoses and bioturbation patterns, offering insights into basin‐floor versus slope mudstones and their implications for hydrocarbon ...
Aram Bayet‐Goll +2 more
wiley +1 more source
Coupled partitioning of Au and As into pyrite controls formation of giant Au deposits
Science Advances, 2019 The precipitation of As-rich pyrite (“fool’s gold”) can scavenge gold from hydrothermal fluids to form giant ore deposits. The giant Carlin-type Au deposits (Nevada, USA) contain gold hosted in arsenic-rich iron sulfide (pyrite), but the processes ...
Christof Kusebauch +2 more
semanticscholar +1 more source
The Depositional Record, EarlyView.Our research uses a multidisciplinary approach, including organic and inorganic geochemistry, biostratigraphy, carbon isotope geochemistry and organic petrography to reconstruct depositional conditions and organic matter accumulation during the Pliensbachian and Toarcian.
Premila Wijesinghe +7 more
wiley +1 more source
Influence of Ca2+ and Mg2+ on Pyrite Flotation at Different Slurry Temperatures
Kuangchan zonghe liyongThis is an article in the field of mineral processing engineering. Through single mineral flotation test, solution chemistry calculation, Zeta potential detection, XPS detection, the influence and regulation mechanism of Ca2+ and Mg2+ on the flotation of
Xin WANG +4 more
doaj +1 more source
AIMS Geosciences, 2017 The Central gold belt of peninsular Malaysia comprises a number of gold deposits located in the east of the N-S striking Bentong-Raub Suture Zone. The Tersang gold deposit is a mesothermal, orogenic gold deposit, which is hosted in sandstone, shale ...
Charles Makoundi, Khin Zaw, R.R. Large
doaj +1 more source
Microscopic time‐dependent mechanical behavior of shale derived from nanoindentation
Deep Underground Science and Engineering, EarlyView.This study conducted grid nanoindentation creep tests to systematically analyze the microscopic creep behaviors of shale. Based on the analysis of creep strain rate sensitivity, the primary mechanism of microscopic creep in shale was found to be the extension and closure of microcracks.
Cunbao Li +4 more
wiley +1 more source
Decomposition of Iron Pyrites [PDF]
Nature, 1875 THE “curious phenomenon” described by Mr. Frederic Case (NATURE, vol. xi. p. 249) is by no means an uncommon one. It is due to oxidation, and the conversion of a portion of the pyrites into soluble sulphate of iron. This decomposition is much aided by the presence of moisture; it is very doubtful whether it would occur at all in a dry atmosphere, and I
openaire +2 more sources