Results 61 to 70 of about 14,263 (225)
Spotlight 3: Lō`ihi Seamount [PDF]
Oceanography, 2010 Lō`ihi Seamount defines the volcanically active, leading edge in the Hawaiian hotspot chain. It is located on the submarine flank of Mauna Loa, 30 km south of the island of Hawai`i.
Hubert Staudigel +5 more
doaj
Newspaper reporting of the April 2007 eruption of Piton de la Fournaise, part 2: framing the hazard
Journal of Applied Volcanology, 2018 An analysis of the front pages of 120 consecutive editions of the local newspaper for the island of La Réunion (France), “Le Journal de L’Ile de La Réunion”, published before, during and after the April 2007 eruption of Piton de la Fournaise reveals that
Andrew J. L. Harris, Nicolas Villeneuve
doaj +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract The majority of planetary impacts occur at oblique angles. Impact structures on Earth are commonly eroded or buried, rendering the identification of the direction and angle of impact—using methods such as asymmetries in ejecta distribution, surface topographic expression, central uplift structure, and geophysical anomalies—challenging. In this
Eloise E. Matthews +5 more
wiley +1 more source
Cavitation Erosion Pits and Craters in Metals
Semina: Ciências Exatas e Tecnológicas, 2018 Foram obtidos erosão e “pits” de cavitação utilizando o dispositivo a disco rotativo, onde um disco contendo indutores de cavitação e os corpos de prova giram em uma câmara preenchida com água, visando causar escoamento cavitante. Estes “pits” puderam ser observados com auxílio de um microscópio eletrônico de varredura.
openaire +3 more sources
Vertical profiling of shock attenuation at the Rochechouart impact structure, France
Meteoritics &Planetary Science, EarlyView.Abstract Rochechouart, south‐west France, is a complex impact structure. Here, we present the first report of shock barometry of quartz from what are likely parautochthonous basement units at depth, based on samples from the 2017 C.I.R.I.R drilling campaign. The crystallographic orientations of 725 sets of PDFs in 512 quartz grains in samples from four
P. Struzynska +4 more
wiley +1 more source
The Discovery and History of the Dalgaranga Meteorite Crater, Western Australia
, 2013 The Dalgaranga meteorite crater, 100 km northeast of Yalgoo, Western Australia, was one of the first impact structures identified in Australia, the smallest isolated crater found in Australia, and the only confirmed crater in the world associated with a ...
Hamacher, Duane W., O'Neill, Craig
core +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract Fossil micrometeorites (MMs) recovered from lithified sedimentary rocks, particularly iron‐rich (I‐type) cosmic spherules (CSs) provide valuable insights into past dust‐forming events. Their abundances, when combined with estimates of local sedimentation rates can be used to reconstruct the flux of extraterrestrial dust.
Isabelle S. Mattia +2 more
wiley +1 more source
Planetary and Space Science, 2014 AbstractHigh-resolution images reveal that numerous pit craters exist on the surface of Mars. For some pit craters, the depth-to-diameter ratios are much greater than for ordinary craters. Such deep pit craters are generally considered to be the results of material drainage into a subsurface void space, which might be formed by a lava tube, dike ...
Michikami, Tatsuhiro +5 more
openaire +2 more sources
A history of the Lonar crater, India: An overview [PDF]
The origin of the circular structure at Lonar, India, described variously as cauldron, pit, hollow, depression, and crater, has been a controversial subject since the early nineteenth century.
Nayak, V. K.
core +1 more source
Microspherules Formed by Lightning Strikes
Meteoritics &Planetary Science, EarlyView.Abstract Natural microspherules are formed by high‐temperature processes and are present throughout the geologic record to the present day. We report the discovery of large numbers of microspherules recovered from a rock pavement in the Pilbara region, Western Australia.
M. R. Boyd, M. J. Genge, A. G. Tomkins
wiley +1 more source