Results 111 to 120 of about 7,690 (304)

High‐Pressure Na‐Ca Carbonates in the Deep Carbon Cycle

open access: yesGeophysical Monograph Series, Page 127-136., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Sergey Rashchenko   +2 more
wiley  

+9 more sources

Consistent Unimodal Body Length Distributions in Hundreds of Reef Fishes Across Diverse Life Histories

open access: yesFish and Fisheries, EarlyView.
ABSTRACT Animal body size distributions result from interactions of growth, mortality and recruitment. In ecology and fisheries science, theoretical models of fish body size distributions are widely used but rely on life‐history parameters—growth coefficient (K) and natural mortality rate (M)—that remain unknown for most species and are challenging to ...
Freddie J. Heather   +9 more
wiley   +1 more source

The Process of Metamorphism in Rocks [PDF]

open access: yesNature, 1933
A RICH store of observations especially on the metamorphic rocks of Great Britain, numerous excellent drawings of rock sections as seen in the microscope and admirable clarity of statement are the outstanding features of this new book on metamorphism.
openaire   +2 more sources

In Situ Boron Isotope Determination in Amphibole by LA‐MC‐ICP‐MS: Matrix Effects and New Potential Reference Materials

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points An analytical strategy for determining boron isotope ratios in Ca‐amphiboles using LA‐MC‐ICP‐MS is presented. Accurate δ11B results can be achieved using the USGS BHVO‐2G glass as the calibrating reference material. Two proposed Ca‐amphibole RMs exhibit good homogeneity with δ11B intermediate measurement precision of 2.86‰ and 3.96 (2s). The
Enrico Cannaò   +3 more
wiley   +1 more source

Strengths and Weaknesses of the Analytical Techniques Used for Measuring Low Mercury Mass Fractions (< 10 ng g‐1) in Crystalline Rocks: Direct Mercury Analyser Versus Cold Vapour‐Atomic Fluorescence Spectroscopy

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points DMA‐80 analyses are inaccurate and imprecise when crystalline rocks have Hg < 10 ng g‐1. DMA‐80 cannot desorb all Hg from mafic‐ultramafic rocks. CV‐AFS analyses are more accurate and precise, even at ultra‐low Hg mass fractions (< 1 pg g‐1).
Francesco Narduzzi   +10 more
wiley   +1 more source

Provenance and characteristics of the pavement stone from the courtyard of the Ljubljana Castle

open access: yesGeologija, 2018
The pavement stone used in the central courtyard of Ljubljana Castle originates from the Kukul area northeast of the town of Prilep in Republic of Macedonia. Several pavers were badly damaged and partly replaced by two other natural stones, because the
Kristina Peulič   +2 more
doaj   +1 more source

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