Results 141 to 150 of about 844 (216)

The Texture of Igneous Rocks [PDF]

open access: yesThe Journal of Geology, 1906
Henry S. Washington   +3 more
openaire   +2 more sources

Introduction to Igneous Rocks

open access: yes, 2013
Igneous rocks comprise the bulk of the Earth, Moon, and other terrestrial planets. They form by the solidification of magma or “molten rock.” This chapter introduces the reader to magma and igneous rocks. It deals with the nature of magma and some of the fundamental descriptive aspects of igneous rocks, primarily their mineralogy and textures.
openaire   +2 more sources

Classification of direct threats to the conservation of ecosystems and species 4.0

open access: yesConservation Biology, EarlyView.
Abstract Identifying and assessing the magnitude of direct threats to ecosystems and species are critical steps to prioritizing, planning, implementing, and assessing conservation actions. Just as medical clinicians and researchers need a standard way to talk about human diseases, conservation practitioners and scientists need a common and ...
Nick Salafsky   +14 more
wiley   +1 more source

Spectral sonics: Field recordings from an extractive zone

open access: yes
American Anthropologist, EarlyView.
Zsuzsanna Ihar
wiley   +1 more source

Tectonics may affect closed watersheds used to monitor climate change and human activity effects

open access: yesTerra Nova, Volume 35, Issue 1, Page 58-65, February 2023., 2023
Abstract Playa lakes developed in closed watersheds have been used as environmental impact indicators (global warming, water extractions, etc.), but they could be also sensitive to active tectonics. Our study area is located in the main watershed in the western Betics, the northern branch of the Gibraltar arc, which is within the fold‐and‐thrust belt ...
Alejandro Jiménez‐Bonilla   +2 more
wiley   +1 more source

Broken Beds, but better science; using multiple hypotheses to interpret geological data

open access: yesTerra Nova, Volume 35, Issue 1, Page 73-82, February 2023., 2023
Abstract In this study, we propose a multiple hypotheses approach to improve interpretations of limited remotely sensed datasets, such as sparsely exposed outcrops, subsurface datasets, or planetary objects using semi‐quantitative scoring and ranking of observable features.
Arnaud Gallois   +3 more
wiley   +1 more source

The Individuality of Meaning in Life

open access: yesEuropean Journal of Philosophy, EarlyView.
Abstract In contemporary philosophical discourse, there is a widespread assumption that meaning in life is individual: that it is a value inherent in individual human lives, that the content of this meaning varies from individual to individual, and that it differs in degree based on the individual. Despite these claims, however, objectivist theories of
Roland Kipke
wiley   +1 more source

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

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