Results 131 to 140 of about 1,747 (174)

Astronomical calibration of the middle Cambrian in Baltica: Global carbon cycle synchronization and climate dynamics

Jamart V, Pas D, Hinnov L, Spangenberg J, Adatte T, Nielsen A, Schovsbo N, Thibault N, Arts M, Daley A.   +9 more
europepmc   +1 more source

Ecology and biogeochemistry of the microbial underworld in two sister soda lakes. [PDF]

Environ Microbiome
Paquette AJ, Bhatnagar S, Vadlamani A, Gillis T, Khot V, Novotnik B, De la Hoz Siegler H, Strous M, Rattray JE.   +8 more
europepmc   +1 more source

Early warning signals of the termination of the African Humid Period(s). [PDF]

Nat Commun
Trauth MH, Asrat A, Fischer ML, Hopcroft PO, Foerster V, Kaboth-Bahr S, Kindermann K, Lamb HF, Marwan N, Maslin MA, Schaebitz F, Valdes PJ.   +11 more
europepmc   +1 more source

Ice sheet and precession controlled subarctic Pacific productivity and upwelling over the last 550,000 years. [PDF]

Nat Commun
Yao Z, Shi X, Yin Q, Jaccard S, Liu Y, Guo Z, Gorbarenko SA, Wang K, Chen T, Wu Z, Nan Q, Zou J, Wang H, Cui J, Wang A, Yang G, Zhu A, Bosin A, Vasilenko Y, Yu Y.   +19 more
europepmc   +1 more source

Anthropogenic Eutrophication Drives Major Food Web Changes in Mwanza Gulf, Lake Victoria. [PDF]

Ecosystems
King L, Wienhues G, Misra P, Tylmann W, Lami A, Bernasconi SM, Jaggi M, Courtney-Mustaphi C, Muschick M, Ngoepe N, Mwaiko S, Kishe MA, Cohen A, Heiri O, Seehausen O, Vogel H, Grosjean M, Matthews B.   +17 more
europepmc   +1 more source

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A Hylogger-Itrax core-scanner comparison for multi-scale high-resolution petrophysical characterisation workflow

Applied Geochemistry, 2021
Abstract Recent advances in core scanning technologies allow for fast and non-destructive chemical and mineral profiling of rock samples for mineral services and oil and gas exploration. The aim of these automatic core scan methods is to obtain valuable information for profiling drill core cuttings with minimum sample preparation at relatively high ...
Amalia Yunita Halim, Sarah Jane Kelloway, Christopher Marjo, Klaus Regenauer-Lieb   +3 more
openaire   +2 more sources

Sequential sample reservoirs for Itrax-XRF analysis of discrete samples

Journal of Paleolimnology, 2017
Geochemical analysis of sediment samples can be used to characterize between- and within-lake variability and provide insights into lake chemistry, depositional processes and contamination sources. The number of samples for geochemical studies is restricted by cost, sample volume required, and the destructive nature of inductively coupled plasma mass ...
Braden R. B. Gregory, Eduard G. Reinhardt, Andrew L. Macumber, Nawaf A. Nasser, R. Timothy Patterson, Shawn E. Kovacs, Jennifer M. Galloway   +6 more
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Investigating fluid-rock interaction at the hand-specimen scale via ITRAX

Journal of Geochemical Exploration, 2019
Abstract Accessing geochemical compositions on the hand-specimen scale provides important clues towards understanding fluid-rock interaction in mineralization. In this study, we used the ITRAX core scanner to detect the geochemical composition of a hand specimen obtained from Yangshan skarn-type Iron deposits in China.
Tong Li, Renguang Zuo, Guoxiong Chen
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Itrax μ‐XRF core scanning for rapid tephrostratigraphic analysis: a case study from the Auckland Volcanic Field maar lakes

Journal of Quaternary Science, 2019
ABSTRACTItrax micro X‐ray fluorescence (μ‐XRF) core scanning is a non‐destructive, rapid approach to measuring elemental concentrations and their variability in sediment cores. As such, it records elemental signatures of tephra layers, which serve as correlation tie points and chronological markers for these sedimentary archives of past climatic ...
Leonie Peti, Patricia S. Gadd, Jenni L. Hopkins, Paul C. Augustinus   +3 more
openaire   +2 more sources