Growing up, I was mildly obsessed with Mount Everest. Even now I marvel at its wonderful geology. Looking at that, who can blame me? My youthful obsession was fuelled by books of British expeditions in the 1970s climbing it by … Continue reading →... Read more »
SEARLE, M., SIMPSON, R., LAW, R., PARRISH, R., & WATERS, D. (2003) The structural geometry, metamorphic and magmatic evolution of the Everest massif, High Himalaya of Nepal-South Tibet. Journal of the Geological Society, 160(3), 345-366. DOI: 10.1144/0016-764902-126
One hundred years ago today, one of the biggest volcanic eruptions in recorded history took place in southwestern Alaska. The volcano, known as Novarupta, is located in what is now Katmai National Park, which was established in 1918 as a direct result of the eruption and its effects on the landscape. As a result, this [...]... Read more »
Leonardo da Vinci, famed artist and Renaissance “Renaissance Man” made some interesting remarks about Geology. When he looked at rocks in the Alps containing fossil molluscs, it was clear to his trained eye that the fossils were near identical to … Continue reading →... Read more »
Harris, N. (2007) Channel flow and the Himalayan-Tibetan orogen: a critical review. Journal of the Geological Society, 164(3), 511-523. DOI: 10.1144/0016-76492006-133
Godin, L., Grujic, D., Law, R., & Searle, M. (2006) Channel flow, ductile extrusion and exhumation in continental collision zones: an introduction. Geological Society, London, Special Publications, 268(1), 1-23. DOI: 10.1144/GSL.SP.2006.268.01.01
A few people today have pointed me at the new paper by Dan Kahan & colleagues (1), which explores competing explanations for why lots of people don’t regard climate change as a serious problem. I’ve blogged about Dan’s work before – the studies they do are very well designed, and address important questions. If you’re [...]... Read more »
Kahan, D., Peters, E., Wittlin, M., Slovic, P., Ouellette, L., Braman, D., & Mandel, G. (2012) The polarizing impact of science literacy and numeracy on perceived climate change risks. Nature Climate Change. DOI: 10.1038/nclimate1547
William F. McComas. (1998) The Principle Elements of the Nature of Science: Dispelling the Myths. The Nature of Science in Science Education. info:/
In areas of active mountain-building the middle crust can get hot and weak, like a soft jam/jelly filling in a sandwich. These squishy rocks are hidden from us by the cold rigid upper crust, so we wouldn’t expect to see … Continue reading →... Read more »
Peter K. Zeitler, Anne S. Meltzer, Peter O. Koons, David Craw, Bernard Hallet, C. Page Chamberlain, William S.F. Kidd, Stephen K. Park, Leonardo Seeber, Michael Bishop.... (2001) Erosion, Himalayan Geodynamics, and the Geomorphology of Metamorphism. GSA Today. info:/
[Versión extendida del artículo para Amazings]La ciencia avanza A Hombros de Gigantes, decía Chartres ya en el siglo XII. La frase se refierea que nuestra pequeña contribución al conocimientose basa y se suma a lo que nos transmitierongeneraciones anteriores, y sólo gracias a ellaspodemos ver más allá. [Fuente]. ¡Hay tantos estudios que se arrogan el estatus de científico sin serlo! Los Magufos están incluídos en ese grupo,........ Read more »
Alvarez, W., & Leitao, H. (2011) The neglected early history of Geology: The Copernican Revolution as a major advance in understanding the Earth: REPLY. Geology, 39(9). DOI: 10.1130/G32501Y.1
[This just appeared in Geology (link to abstract)]Survival of a submarine canyon during long-term outbuilding of a continental marginDavid Amblas et al., Universitat de Barcelona, E-08028 Barcelona, Spain. Geology, doi: 10.1130/G33178.1. The resemblance between subaerial and submarine canyons has led to the long-standing view of submarine canyons as purely erosive landforms. Yet submarine canyons forming at continental slopes that grow from long-term accumulation of sediment are observed both at........ Read more »
Amblas, D., Gerber, T., De Mol, B., Urgeles, R., Garcia-Castellanos, D., Canals, M., Pratson, L., Robb, N., & Canning, J. (2012) Survival of a submarine canyon during long-term outbuilding of a continental margin. Geology. DOI: 10.1130/G33178.1
A new scientific paper uses a unique methodology to addresses this timeless question ... Read more »
Brusatte, S., Butler, R., Prieto-Márquez, A., & Norell, M. (2012) Dinosaur morphological diversity and the end-Cretaceous extinction. Nature Communications, 804. DOI: 10.1038/ncomms1815
Last week, a paper published in Nature spurred a lot of debates on the internet about the future of agriculture and our ability to feed the 9 billion people that the world will have in 2050. One important aspect related to this debate is the availability of agricultural land. However, people do not always have a clear idea of what expanding the agriculture land means. Here an example of what is happening in one of the most biodiversily rich places of the world: the Bolivan Amazon. Let’s just ........ Read more »
Seufert V, Ramankutty N, & Foley JA. (2012) Comparing the yields of organic and conventional agriculture. Nature. PMID: 22535250
A while back, we started looking at a poorly thought-out article from the website C3Headlines. C3 is starting to make a name for itself as a goldmine of climate comedy- their claims have recently been addressed at Tamino and SkepticalScience. We’re going to keep digging into C3‘s claim that carbon dioxide concentrations have been increasing linearly over [...]... Read more »
Long, S., Elizabeth A. Ainsworth, Andrew D. B. Leakey, Josef Nosberger, & Donald R. Ort. (2006) Food for Thought: Lower-Than-Expected Crop Yield Stimulation with Rising CO2 Concentrations. Science, 312(5782), 1918-1921. DOI: 10.1126/science.1114722
When you're a newly sprouted corn seedling, all alone in the dirt, you need any advantage you can get. After all, you can't pick up your roots and travel to find resources or avoid pests. That's why corn plants emit toxic chemicals that keep away hungry insects aboveground and harmful microbes below. But to at least one kind of bacteria, this poison is more of a beacon. They follow the toxic trail back to the corn plant, set up camp in its roots, and help the vulnerable seedling grow.
A plan........ Read more »
Neal, A., Ahmad, S., Gordon-Weeks, R., & Ton, J. (2012) Benzoxazinoids in Root Exudates of Maize Attract Pseudomonas putida to the Rhizosphere. PLoS ONE, 7(4). DOI: 10.1371/journal.pone.0035498
Read about Food and Energy Security, a new Wiley Open Access Journal, in an editorial by Martin Parry.... Read more »
Parry, M. (2012) Food and energy security: exploring the challenges of attaining secure and sustainable supplies of food and energy. Food and Energy Security. DOI: 10.1002/fes3.1
Reflectivity might work better at mitigating global warming than focus on CO2... Read more »
Millstein, D., & Menon, S. (2011) Regional climate consequences of large-scale cool roof and photovoltaic array deployment. Environmental Research Letters, 6(3), 34001. DOI: 10.1088/1748-9326/6/3/034001
I love graphs – my eyes quickly glaze over at a table of numeric data, but a graph, used correctly, can quickly and easily tell the whole story. ‘Used correctly’ is the key phrase – for all their power, graphs are infamously easy to bungle, and when used incorrectly they can misinform – or lie [...]... Read more »
Andreas D. Hüsler, & Didier Sornette. (2011) Evidence for super-exponentially accelerating atmospheric carbon dioxide growth. arXiv. arXiv: 1101.2832v3
As if a world dominated by hungry, house-sized lizards weren't sufficiently exciting, scientists have added another set piece to our image of the Cretaceous: raging wildfires.
The Cretaceous period, which ended about 65 million years ago with the extinction of the dinosaurs, was hot. That's thanks to volcanos that pumped carbon dioxide into the atmosphere and created a greenhouse effect. Researchers from London and Chicago now say it was also a "high-fire" world. Frequent blazes may have ke........ Read more »
Brown, S., Scott, A., Glasspool, I., & Collinson, M. (2012) Cretaceous wildfires and their impact on the Earth system. Cretaceous Research. DOI: 10.1016/j.cretres.2012.02.008
A review and interpretation of an article presenting data on the fallout of iodine-131, cesium-134 and cesium-137 in North America. The data is also compared to fallout from Chernobyl and CNSC limits on drinking water.... Read more »
Wetherbee, G. A., Gay, D. A., Debey, T. M., Lehmann, C. M. B., . (2012) Wet Depostion of Fission Product Isotopes to North America Released from the Fukushima Dai-ichi Incident, March 2011. Environmental Science and Technology. info:/
China’s hydropower development activities on the Mekong and Salween Rivers are a clear illustration of the country’s potentially destabilizing strategy, with both diplomatic and environmental impacts, in Southeast Asia...... Read more »
Lu, X., & Siew, R. (2006) Water discharge and sediment flux changes over the past decades in the Lower Mekong River: possible impacts of the Chinese dams. Hydrology and Earth System Sciences, 10(2), 181-195. DOI: 10.5194/hess-10-181-2006
Grumbine, R., Dore, J., & Xu, J. (2012) Mekong hydropower: drivers of change and governance challenges. Frontiers in Ecology and the Environment, 10(2), 91-98. DOI: 10.1890/110146
Ziv, G., Baran, E., Nam, S., Rodriguez-Iturbe, I., & Levin, S. (2012) Trading-off fish biodiversity, food security, and hydropower in the Mekong River Basin. Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.1201423109
Making science implies the formulation of refutable hypothesis, this is, the proposal of new ideas (based on former research) that lead to predictions that can be either confirmed or falsified (by future research).Timing of the last reversals of the Earth's magnetic field.The vertical axis is Time, in million years before present.Periods in black matched today's polarity. Source: Wikimedia Commons.A case history in Earth science is the confirmation of the plate tectonics theory during ........ Read more »
Pétrélis, F., Besse, J., & Valet, J. (2011) Plate tectonics may control geomagnetic reversal frequency. Geophysical Research Letters, 38(19). DOI: 10.1029/2011GL048784
Glatzmaiers, G., & Roberts, P. (1995) A three-dimensional self-consistent computer simulation of a geomagnetic field reversal. Nature, 377(6546), 203-209. DOI: 10.1038/377203a0
This time I will tell you about a story that began in theMid-Holocene (5000 years ago) and is set in the Bolivian Amazon. More preciselyin the south-eastern part of the Llanos de Moxos seasonally flooded savannah,in what we call the Monumental Mounds Region MMR (Fig. 1). Here, between 400 and 1400 AD, pre-Columbiansbuilt hundreds of monumental earth mounds, known locally as “lomas”. These earthmounds are planned, complex buildings made by one or more pyramids built on topof elevated pl........ Read more »
Lombardo, U., & Prümers, H. (2010) Pre-Columbian human occupation patterns in the eastern plains of the Llanos de Moxos, Bolivian Amazonia. Journal of Archaeological Science, 37(8), 1875-1885. DOI: 10.1016/j.jas.2010.02.011
This is part of a study of the upper level jet stream located in the mesosphere.
These five rockets will release an aluminum based chemical into the upper layers of atmosphere (the mesosphere) that will form milky-white clouds that will trace winds in space. These clouds might be visible for public up to 20 minutes by East coast residents from southern parts of New Hampshire and Vermont till South Carolina.... Read more »
Larsen, M. F., and C. G. Fesen. (2009) Accuracy issues of the existing thermospheric wind models: Can we rely on them in seeking solutions to wind-driven problems?. Ann. Geophys., 27, 2277–2284. info:/
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