You are currently viewing a new version of our website. To view the old version click .

Geosciences, Volume 10, Issue 4

April 2020 - 40 articles

Cover Story: Whakaari (White island), New Zealand has a hazardous hydrothermal system linked to shallow magma. Analysis of ballistic blocks from the 2016 eruption show significant alteration—with dominant anhydrite, alunite and silica polymorphs. We tested these ballistics for strength and permeability at variable pressures. Our results illustrate that if cracked altered rock is subjected to variable pressures, the cracks can behave like valves, opening and re-sealing. These valves offer an explanation for the types of earthquakes and changeable gas flux observed in hydrothermal systems. We additionally suggest that clogging by mineral precipitation and subsequent failure of these crack-valves is associated with eruptions. View this paper
  • Issues are regarded as officially published after their release is announced to the table of contents alert mailing list .
  • You may sign up for email alerts to receive table of contents of newly released issues.
  • PDF is the official format for papers published in both, html and pdf forms. To view the papers in pdf format, click on the "PDF Full-text" link, and use the free Adobe Reader to open them.

Articles (40)

  • Article
  • Open Access
11 Citations
5,290 Views
21 Pages

We present techniques to reduce noise and enhance seismic quality, making possible the first multi-attribute analysis of a 3D seismic volume in the Llanos Foothills (La Florida anticline) of Colombia using coherency and ant-tracking techniques for fa...

  • Article
  • Open Access
3 Citations
3,084 Views
13 Pages

Displacements of Object Founded on Expansive Soils—A Case Study of Light Construction

  • Aleksandra Gorączko,
  • Jacek Sztubecki,
  • Adam Bujarkiewicz and
  • Szymon Topoliński

The paper presents results of observations of a light structure damaged by irregular vertical and horizontal deformations on Neogene expansive clays, typical for area in Central Poland. The sensitivity to environmental changes of humidity in such sub...

  • Article
  • Open Access
42 Citations
4,691 Views
17 Pages

This paper aimed to present a systematic study of the effects caused by the strong earthquake that struck southern Italy on 23 November 1980 (Ms = 6.9) and affected the Campania and Basilicata regions. Two aspects are discussed here: The broadening o...

  • Article
  • Open Access
2 Citations
2,449 Views
11 Pages

Spherical cavities made by explosive charge activation in a clay soils differ in size and shape. The mass of explosive charge lowered on the bottom of the borehole in a one-time blasting is typically relatively small and is calculated by a desired an...

  • Review
  • Open Access
6 Citations
4,392 Views
21 Pages

Hydrogen isotopes in the shergottite Martian meteorites are among the most varied in Mars laboratory samples. By collating results of previous studies on major hydroxyl, deuterium, and H2O bearing phases, we provide a compendium of recent measurement...

  • Article
  • Open Access
32 Citations
5,106 Views
18 Pages

Proterozoic sedimentary basins very often emit natural hydrogen gas that may be a valuable part of a non-carbon energy infrastructure. Vents in the Sao Francisco Basin in Brazil release hydrogen to the atmosphere mainly during the daylight half of th...

  • Article
  • Open Access
9 Citations
5,367 Views
14 Pages

Structure of Benthic Macroinvertebrate Communities in the Rivers of Western Himalaya, Nepal

  • Ram Devi Tachamo Shah,
  • Subodh Sharma,
  • Deep Narayan Shah and
  • Deepak Rijal

According to River Continuum Concept (RCC), channel morphology, including sediment loads and channel width, river habitat, flow regimes and water quality, differs from the tributary to the downstream river’s mainstem, allowing shifts in faunal...

  • Article
  • Open Access
3 Citations
3,398 Views
11 Pages

Geological and geophysical evidence suggests that the Altotiberina low-angle (dip angle of 15–20 ° ) normal fault is active in the Umbria–Marche sector of the Northern Apennine thrust belt (Italy). The fault plane is 70 km long...

  • Article
  • Open Access
7 Citations
5,841 Views
21 Pages

Multiple Sulfur Isotope Records of the 3.22 Ga Moodies Group, Barberton Greenstone Belt

  • Masafumi Saitoh,
  • Sami Nabhan,
  • Christophe Thomazo,
  • Nicolas Olivier,
  • Jean-François Moyen,
  • Yuichiro Ueno and
  • Johanna Marin-Carbonne

The Moodies Group, the uppermost unit in the Barberton Greenstone Belt (BGB) in South Africa, is a ~3.7-km-thick coarse clastic succession accumulated on terrestrial-to-shallow marine settings at around 3.22 Ga. The multiple sulfur isotopic compositi...

  • Article
  • Open Access
11 Citations
3,161 Views
20 Pages

We investigate how suitable ground penetrating radar (GPR) and geoelectrics are to prospect the remains of submerged wooden archaeological constructions in the water column. For this purpose, we determined the contrasts of electric resistivity and di...

of 4

Get Alerted

Add your email address to receive forthcoming issues of this journal.

XFacebookLinkedIn
Geosciences - ISSN 2076-3263