If you didn't find what you was looking for try searching again.
Microbialites – structures which result from the interaction between microbes and sediments – have existed in the rock record since 3700 Ma ago until the present day. The presence of microbes in environments where mineral precipitation is prevalent, usually derives in the development of such chemical sedimentary structures. This can take place in marine, non-marine, and subterranean environm ...[Read More]
“SEISMIC ANISOTROPY AND MANTLE DEFORMATION: WHAT HAVE WE LEARNED FROM SHEAR WAVE SPLITTING?” (M. K. SAVAGE, 1999) commented by Dr. Jessica Johnson Jessica Johnson from the University of East Anglia (UK) is our guest author of the PoM blog series of this month! She has chosen to comment on the paper “Seismic Anisotropy and mantle deformation: what have we learned from shear wave ...[Read More]
Polar surface water, circumpolar deep water, dense shelf water, North Atlantic deep water, Antarctic bottom water… These names pop in most discussions about the ice-ocean interaction and how this will change in a warming climate, but what do they refer to? In our second “For Dummies” article, we shall give you a brief introduction to the concept of “water mass”, explain how to differentiate water ...[Read More]
“MAPPING THE UPPER MANTLE: THREE-DIMENSIONAL MODELING OF EARTH STRUCTURE BY INVERSION OF SEISMIC WAVEFORMS” (Woodhouse & Dziewonski,1984) commented by Andrew Valentine. Here we are again with our Paper of the Month (PoM) series! Our guest writer is Andrew Valentine, who has chosen to comment one of the landmark papers in global seismic imaging: “Mapping the upper mantle: Thre ...[Read More]
The relentless retreat of glaciers, globally, is widely studied and reported. The causes for the loss of these precious landforms are complex and the dynamics which govern them difficult to unravel. So are the consequences and impacts of reduced glacial extent atop the world’s high peaks, as Alexis Merlaud, explains in this week’s edition of Imaggeo on Mondays. This picture was taken on 20 August ...[Read More]
Much ink is spilled hailing the work of the early fathers of geology – and rightly so! James Hutton is the mind behind the theory of uniformitarianism, which underpins almost every aspect of geology and argues that processes operating at present operated in the same manner over geological time, while Sir Charles Lyell furthered the idea of geological time. William Smith, the coal miner and canal b ...[Read More]
My friend John Jamieson, who is now a prof in the geology department at Memorial University in Newfoundland and Canada Research Chair in marine geology and is also a former GeoSphere guest poster is currently on a research cruise near Fiji. John researches deep sea vents, aka. black smokers/seafloor massive sulphide deposits that are exhaling super heated water at tectonic plate boundaries around ...[Read More]
Ensuring research outputs and findings have an impact in society is becoming an increasingly important part of successfully securing research funding. Perhaps even more importantly, some might argue that it is the responsibility of all geoscientists to communicate their science and research. Whatever your motivations for choosing to engage colleagues and non-scientific audiences with your research ...[Read More]
The severe flooding that has hit much of northern England during the last few weeks (and northeastern Scotland right now) has generated significant discussion and debate about why floods happen, how often they occur and what we can do about it. The fact is there’s no simple answer to any of these questions: the hydrometeorological cycle is a complex beast and our actions have altered it in m ...[Read More]
Last year we prepared a round-up blog post of our favourite Imaggeo pictures, including header images from across our social media channels and Immageo on Mondays blog posts of 2014. This year, we want YOU to pick the best Imaggeo pictures of 2015, so we compiled an album on our Facebook page, which you can still see here, and asked you to cast your votes and pick your top images of 2015. From the ...[Read More]
