News from the Earth Sciences
Extensive systems of fossilised riverbeds have been discovered on an ancient region of the Martian surface, supporting the idea that the now cold and dry Red Planet had a warm and wet climate about four billion years ago, More...
Published: Aug 25, 2016 11:20:00 AM
IODP Expedition 362 aims to examine the role of seafloor sediments and their potential effect on seismogenesis and tsunamogenesis in this part of the North Sumatra seismogenic zone. More...
Published: Aug 19, 2016 5:20:00 PM
During the 2016 Linnean Society of London’s Annual General Meeting Anjali Goswami and Thomas Halliday have been presented with the medals recognising their outstanding contributions to the Natural Sciences. The Society aims to promote the study of all aspects of the biological sciences. Through awarding medals and grants, the Society acknowledges and encourages excellence in all of these fields. More...
Published: May 31, 2016 10:26:00 AM
The explosive potential of volcanoes is primarily controlled by the quantity of gas in the magma and its ability to escape. Gas can escape from solidified magma through a network of interlinked cracks, and the ease of escape in this way is known as the permeability. In a recent paper published by Gaunt et al. in Bulletin of Volcanology, studies of lava spines at Mount St. Helens volcano, have revealed that although these fracture-networks are relatively permeable at room temperature, at elevated temperatures such as those found in volcanic conduits, this permeability can be substantially reduced. This results was not expect and means that the permeability and explosion potential can change dramatically with changing environmental conditions. More...
Published: May 2, 2016 10:26:00 AM
The students: Paul Bridger, Sinéad Lyster and Abigail Hunt discuss their experiences of using an ocean core replicate during a practical for the Palaeoceanography course (GeolGG17/M018). The core covers an interval of dramatic climate change around 55.8 million years ago, termed the Paleocene-Eocene Thermal Maximum (PETM). The students studied the colour changes in the core replica, plotted percent carbonate data and answered a series of questions to determine sedimentological changes through this interval. More...
Published: Apr 28, 2016 12:26:00 PM
On 19 April, Phil Meredith was awarded the 2016 Louis Néel Medal at the European Geosciences Union Assembly in Vienna. The award recognises outstanding achievements in rock magnetism, rock physics and geomaterials. In his citation, Ian Main, from the University of Edinburgh, highlighted how Phil has pioneered an entirely new, holistic approach to experimental rock physics and how the rock-physics community has benefited enormously from his unselfish co-operation in research: “He is a lively, deeply thoughtful and generous collaborator, serious about his work, but fun to be with.” More...
Published: Apr 26, 2016 12:26:00 PM
is a wonder material, made of a single layer (one-atom thick) of graphite, and
with extraordinary mechanical and electronic properties. A
sheet of graphene the thickness of a cling film would require the weight of a
large car to be punctured. It is transparent, and electrons can
move thousands of times faster then on copper. Graphene
was isolated for the first time just over ten years ago by Geim and Novoselov,
who received the 2010 Nobel prize for that feat. Nowadays
is produced with a number of methods, one of which is the dehydrogenation of
poly-aromatic molecules, like coronene.
Published: Apr 1, 2016 12:26:00 PM
Published: Mar 18, 2016 10:00:00 AM
Ana Ferreira and colleagues Sung-Joon Chang and Manuele Faccenda build the clearest picture so far on how mantle plumes can interact with subducting slabs from the mid-mantle to the Earth’s surface. More...
Published: Feb 29, 2016 10:00:00 AM
Deep-water (below wave base) processes, although generally
hidden from view, shape the sedimentary record of more than 65% of
the Earth’s surface, including large parts of ancient
mountain belts. This book aims to inform advanced-level
undergraduate and postgraduate students, and professional Earth
scientists with interests in physical oceanography and hydrocarbon
exploration and production, about many of the important physical
aspects of deep-water (mainly deep-marine) systems.
Published: Feb 12, 2016 12:26:00 PM