Results 61 to 70 of about 884,714 (212)

Influence of slump folds on tectonic folds: an example from the Lower Ordovician of the Anglo-Brabant Deformation Belt (Belgium) [PDF]

open access: yes, 2006
Although it is generally accepted that buckle folds will not develop in a perfectly planar layer without the presence of some irregularity or perturbation at which the folds initiate, there are very few cases in which individual natural folds can be ...
Beckers, R, Debacker, Timothy
core   +2 more sources

Three‐dimensional gravity current interactions with oblique slopes: Deflection, reflection and combined‐flow behaviours

open access: yesSedimentology, EarlyView.
ABSTRACT Gravity currents interacting with planar slopes have been thought to always ‘reflect’ a component of flow orthogonal to the slope irrespective of the flow incidence angle. Incoming flows are argued to undergo gravitational collapse, and generate internal waves, that propagate perpendicular to the bounding slope.
Ru Wang   +5 more
wiley   +1 more source

Deformational sequence of a portion of the Michipicoten greenstone belt, Chabanel Township, Ontario [PDF]

open access: yes
Detailed mapping at a scale of one inch = 400 feet is being carried out within a fume kill, having excellent exposure, located in the southwestern portion of the Michipicoten Greenstone Belt near Wawa, Ontario.
Mcgill, G. E., Shrady, C. H.
core   +1 more source

Micro-CT and mercury intrusion porosimetry characterization of the fabric of roofing slate [PDF]

open access: yes, 2013
The petrological fabric of roofing slate determines the main properties of the slate as a construction material, such as durability and waterproofing.
Cnudde, Veerle   +3 more
core   +1 more source

Tabulation of Asbestos Related-Terminology [PDF]

open access: yes
The definition of asbestos often varies depending on the source or publication in which it is used. This report summarizes asbestos-related definitions taken from a variety of academic, industrial, and regulatory sources.
Greg Meeker, Heather Lowers
core  

The building stones and slates of Killin : an investigation of stone for the built heritage [PDF]

open access: yes, 2010
The village of Killin lies in an area of dramatic landscape and mountain scenery. The use of local stone in the buildings gives a direct connection to this landscape and reflects the local geology, comprising mostly metamorphic rocks of Precambrian age
Albornoz-Parra, L.J.   +5 more
core  

Surface reactivity of amphibole asbestos. A comparison between crocidolite and tremolite [PDF]

open access: yes, 2017
Among asbestos minerals, fibrous riebeckite (crocidolite) and tremolite share the amphibole structure but largely differ in terms of their iron content and oxidation state. In asbestos toxicology, iron-generated free radicals are largely held as one of
Andreozzi, Giovanni B.   +4 more
core   +3 more sources

Exploration for volcanogenic sulphide mineralisation at Benglog, north Wales [PDF]

open access: yes, 1983
Exploration for volcanogenic sulphide mineralisation around Benglog is one of three investigations designed to assess the metallogenic potential of the Ordovician Aran Volcanic Group.
Allen, P.M.   +4 more
core  

Rethinking “Prebiotic Chemistry”

open access: yesPerspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract In origins‐of‐life research, the term “prebiotic chemistry” is commonly used to describe processes thought to be related to or required for the emergence of life. However, it suffers from several potential drawbacks that have caused the present group of authors to rethink their usage of the term.
Michael L. Wong   +2 more
wiley   +1 more source

Distribution anisotropy: the influence of magnetic interactions on the anisotropy of magnetic remanence

open access: yes, 2004
The anisotropy of magnetic remanence (AMR) is often used as a tool for examining magnetic anisotropy of rocks. However, the influence of magnetostatic interactions on AMR has not been previously rigorously addressed either theoretically or experimentally,
Muxworthy, A R, Williams, W
core   +1 more source

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