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Geosciences, Volume 8, Issue 6

June 2018 - 37 articles

Cover Story: Shrubby microbial structures known as dendrolites are common in the rock record but rare in modern environments. This paper describes living dendrolites that were recently discovered in low energy intertidal settings in Hamelin Pool, Shark Bay. Thick filaments of Lyngbya aestuarii form the “trunks” of the dendrolitic shrubs, with finer filaments of Lyngbya fragilis, Phormidium sp., and Schizothrix sp. forming the “branches.” These modern structures provide insight into our understanding of dendrolite formation throughout the rock record. View Paper here.
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Articles (37)

  • Feature Paper
  • Article
  • Open Access
20 Citations
9,444 Views
17 Pages

Using ArcticDEM to Analyse the Dimensions and Dynamics of Debris-Covered Glaciers in Kamchatka, Russia

  • Iestyn D. Barr,
  • Mikhail D. Dokukin,
  • Ioannis Kougkoulos,
  • Stephen J. Livingstone,
  • Harold Lovell,
  • Jakub Małecki and
  • Anton Y. Muraviev

On the Kamchatka Peninsula, a number of glaciers are covered by thick volcanic debris, which makes their margins difficult to delineate from satellite imagery. Fortunately, high resolution, multi-temporal digital surface models (DSMs) covering the en...

  • Article
  • Open Access
54 Citations
7,789 Views
14 Pages

Improved Interpretation of Marine Sedimentary Environments Using Multi-Frequency Multibeam Backscatter Data

  • Peter Feldens,
  • Inken Schulze,
  • Svenja Papenmeier,
  • Mischa Schönke and
  • Jens Schneider von Deimling

Backscatter mosaics based on a multi-frequency multibeam echosounder survey in the continental shelf setting of the North Sea were compared. The uncalibrated backscatter data were recorded with frequencies of 200, 400 and 600 kHz. The results showed...

  • Article
  • Open Access
15 Citations
4,303 Views
17 Pages

Reactive and Mixing Processes Governing Ammonium and Nitrate Coexistence in a Polluted Coastal Aquifer

  • Chiara Sbarbati,
  • Nicolò Colombani,
  • Micòl Mastrocicco,
  • Marco Petitta and
  • Ramon Aravena

A comprehensive hydrochemical, stable isotope and microbial analyses characterisation has been performed to evaluate the sources of groundwater, nitrogen pollution and degradation processes occurring in an industrial polluted coastal aquifer in the f...

  • Article
  • Open Access
21 Citations
5,779 Views
27 Pages

Recent studies reveal that organisms from all three domains of life—Archaea, Bacteria, and even Eukarya—can thrive under energy-poor, dark, and anoxic conditions at large depths in the fractured crystalline continental crust. There is a n...

  • Feature Paper
  • Article
  • Open Access
31 Citations
7,423 Views
17 Pages

Living Dendrolitic Microbial Mats in Hamelin Pool, Shark Bay, Western Australia

  • Erica P. Suosaari,
  • Stanley M. Awramik,
  • R. Pamela Reid,
  • John F. Stolz and
  • Kathleen Grey

Hamelin Pool, Shark Bay, Western Australia, is home to the largest and most diverse assemblage of living marine stromatolites, with shapes and sizes comparable to ancient structures. A recent field-intensive program revealed seasonally ephemeral occu...

  • Article
  • Open Access
3,884 Views
14 Pages

Conducting integrated climate research with involvement of such diverse disciplines as mathematics, meteorology, oceanography, economics, geology, biology, social, and communication sciences poses great challenges to the underlying nomenclature and m...

  • Article
  • Open Access
24 Citations
8,310 Views
24 Pages

Glacitectonic deformation in the Upper Weichselian led to the tectonic framework of large-scale folds and displaced thrust sheets of Maastrichtian (Upper Cretaceous) chalk and Pleistocene glacial deposits in the southwestern Baltic Sea region. They f...

  • Article
  • Open Access
15 Citations
5,418 Views
15 Pages

Numerical Modeling of Remediation Scenarios of a Groundwater Cr(VI) Plume in an Alpine Valley Aquifer

  • Gennaro A. Stefania,
  • Marco Rotiroti,
  • Letizia Fumagalli,
  • Chiara Zanotti and
  • Tullia Bonomi

This work presents the numerical modeling of remediation scenarios aimed at containing and attenuating the groundwater pollution by Cr(VI) sourced from a steelworks area that affects the Alpine aquifer system in the Aosta Plain (N Italy). Here, groun...

  • Article
  • Open Access
36 Citations
10,592 Views
21 Pages

GIS and Remote-Sensing Application in Archaeological Site Mapping in the Awsard Area (Morocco)

  • Ange Felix Nsanziyera,
  • Hassan Rhinane,
  • Aicha Oujaa and
  • Kenneth Mubea

Morocco is famous as one of the archaeologically richest places with many sites. In addition, some of the sites have been listed as UNESCO World Human Heritage sites. In situ observations are used in cultural heritage and archaeological sites mapping...

  • Article
  • Open Access
6 Citations
5,870 Views
17 Pages

Albedo of a Small Ice-Covered Boreal Lake: Daily, Meso-Scale and Interannual Variability on the Background of Regional Climate

  • Galina Zdorovennova,
  • Nikolay Palshin,
  • Tatyana Efremova,
  • Roman Zdorovennov,
  • Galina Gavrilenko,
  • Sergey Volkov,
  • Sergey Bogdanov and
  • Arkady Terzhevik

In winter, the reflective properties of ice-and-snow-covered lakes and the surrounding surface covered with snow differ little. Estimation of the albedo becomes especially important in spring when the reflectivity of the ice-covered lakes differs mar...

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Geosciences - ISSN 2076-3263