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Posts treating: "Africa"

Friday, 20 March 2015

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The Incredible Dunes of Namibia: Geotripper becomes an Armchair Geologist for a day 

Geotripper [2015-03-20 05:15:00]  recommend  recommend this post  (31 visits) info

Here at Geotripper I usually write about my travels, geological and otherwise. I feel inordinately lucky to have a job that allows me to travel a lot, introducing my students to the incredible world that lies beyond the borders of their town. But there are certainly a great many places I have never visited, and may never have the chance to. I am also lucky to have a cadre of former

Saharan dust feeds Amazon rainforest just enough to replace lost nutrient 

AGU Meetings [2015-02-24 16:02:51]  recommend  recommend this post  (31 visits) info
The Sahara Desert is a near-uninterrupted brown band of sand and scrub across the northern third of Africa. The Amazon rainforest is a dense green mass of humid jungle that covers northeast South America. But after strong winds sweep across the Sahara, a tan cloud rises in the air, stretches between the continents, and ties together the desert and the jungle. It’s dust. And lots of it. Scientists have not only used a satellite to measure the volume of dust that makes this trans-Atlantic [...]

Human Evolution- Multiple Opportunities For Migrating "Out Of Africa" 

Reporting on a Revolution [2015-02-23 10:08:00]  recommend  recommend this post  (29 visits) info
There really seems to be a connection between orbital mechanics and human behavior, though not in a way astrologers think it to be! From the early online February issue of Geology- The dispersal of human populations out of Africa into Arabia was most likely linked to episodes of climatic amelioration, when increased monsoon rainfall led to the activation of drainage systems,

Spinosaurus: un torace molto lungo oppure un'ipotesi molto corta? 

Theropoda [2015-01-17 12:51:00]  recommend  recommend this post  (46 visits) info

Il “paradosso” di Spinosaurus sensu Ibrahim et al. (2014) deriva fondamentalmente da un singolo fatto: il rapporto tra la lunghezza delle vertebre dorsali e la lunghezza degli elementi del cinto pelvico e dell'arto posteriore. Per chiarire questa frase, ho plottato le misure pubblicate da Ibrahim et al. (2014, informazioni supplementari) relative all'ileo, femore, tibia rispetto ai medesimi

The Rise of the Tripodal Spinosaur 

Theropoda [2015-01-10 18:39:00]  recommend  recommend this post  (39 visits) info
La “tesi quadrupede” su Spinosaurus da parte di Ibrahim et al. (2014) è stata sicuramente la parte più controversa della pubblicazione più controversa in theropodologia nello scorso anno. Mentre uno stuolo di critici ha attaccato l'ipotesi di partenza di quello studio, ovvero l'esistenza effettiva di uno spinosauride con quelle particolari proporzioni scheletriche, io ho accettato la

All warmed up and nowhere to go: The missing El Niño of 2014 

AGU Meetings [2014-12-22 16:25:37]  recommend  recommend this post  (34 visits) info

In 1997, a record-breaking El Niño event in the Pacific Ocean brought rain to California, flooding to Peru, and drought to Africa. Earlier this year scientists said that warm currents in the Pacific Ocean presaged the biggest El Niño event since the record-breaking 1997-1998 season. The National Oceanic and Atmospheric Administration put the likelihood of a major Northern Hemisphere El Niño at 80 percent. But despite high expectations, the predicted El Niño of 2014 has ultimately fizzled. [...]

Guest Blog: Water of Life Project – Safe Drinking Water in Burkina Faso 

Geology for Global Development [2014-12-10 12:00:46]  recommend  recommend this post  (24 visits) info

Christopher Barry was the winner of our Blog Competition in 2012, with this article on safe drinking water in Burkina Faso. Christopher was privileged to be able to visit Burkina Faso prior to writing this, a very rural country where a great number of people are dependent on drilled wells with hand pumps for clean water. In Ouagadougou he met Mark Collier, where they talked at length about hydrogeology in the country. Now a PhD student at the University of Birmingham, Christopher Barry is [...]

Guest Blog: GfGD UCL Event Report 

Geology for Global Development [2014-12-03 11:50:59]  recommend  recommend this post  (23 visits) info

Celia Willoughby, UCL Geography student and GfGD Ambassador, writes about a recent event… Wednesday 19th November, saw the first UCL GfGD lecture of the year, taken by guest speaker Prof. Richard Taylor. Professor of hydrogeology in UCL’s Geography Department, his most recent focus of research is the study of groundwater, and the effects of climate change on groundwater supplies. The application of scientific skills to facilitate global development is key in Prof. Taylor’s [...]

New Dinosaurs from Extreme Environments of Tunisia and the Mesozoic Europe-Africa Faunal Interchange – Spedizione 1 

Theropoda [2014-11-23 20:07:00]  recommend  recommend this post  (21 visits) info

 Mesozoic; TN,
Federico Fanti e nuovi resti di Tataouinea hannibalis (Fanti et al. in review: MEGA SPOILER!!!!) La mia quasi totale assenza dalla blogosfera durante questo mese ha vari motivi. Di questi, quello più concreto sta per entrare nel vivo. Venerdì prossimo, partirò per Tataouine, nel sud della Tunisia, assieme a Federico Fanti, Luigi Cantelli ed alcuni studenti del dipartimento di Scienze

In search of the first settlers of the Americas, scientists keep finding surprises 

BEYONDbones [2014-11-08 17:55:03]  recommend  recommend this post  (36 visits) info

The genus Homo, to which we belong, was the first to leave Africa and explore the world. Homo erectus, one of our ancestors, explored Asia and Europe as early as 1.8 million years ago. However, one huge landmass was left … Continue reading

Died This Day: Louis Leakey 

Palaeoblog [2014-10-01 16:33:00]  recommend  recommend this post  (38 visits) info

Louis and Mary Leakey From Today In Science History: Leakey (Aug 7, 1903 – October 1, 1972), an archaeologist and anthropologist, was born in Kabete, Kenya, of English missionaries parents. Leakey was largely responsible for convincing scientists that Africa, rather than Java or China, was the most significant area to search for evidence of human origins. Leakey led fossil-hunting

Spinosaurus Revolution, Final Episode: Size and Style of the New Spinosaur 

Theropoda [2014-09-30 15:04:00]  recommend  recommend this post  (31 visits) info

Post conclusivo della serie dedicata alle nuove scoperte relative a Spinosaurus. Il nuovo esemplare riferito a Spinosaurus ha permesso non solo di rivalutare l'enigmatico "Spinosaurus B" ma anche di raffinare le controverse stime sulle dimensioni di questo dinosauro. Il nuovo esemplare include varie ossa confrontabili sia con l'olotipo di Baryonyx che con l'esemplare originario descritto da

Spinosaurus Revolution, Episodio V: Sigilmassasaurus vs Spinosaurus: una battaglia tafonomica 

Theropoda [2014-09-21 13:19:00]  recommend  recommend this post  (46 visits) info
[Nota: Questo post era in programma prossimamente, ma un recent commento di Mickey Mortimer mi ha indotto a pubblicarlo ora.] Perché Sigilmassasaurus è stato per quasi venti anni un dinosauro così enigmatico, e solo di recente riconosciuto in modo inequivocabile come essere un sinonimo di Spinosaurus? L'enigma si Sigilmassasaurus deriva nella bizzarra preservazione di tutti i resti a

Spinosaurus Revolution, Episodio IV: Una soluzione a tutti gli enigmi? 

Theropoda [2014-09-20 09:58:00]  recommend  recommend this post  (55 visits) info

In questi giorni, la paleo-rete è nel pieno di una vera e propria battaglia, combattuta tra vari fronti. C'è la piccola fronda rivoluzionaria (quella, appunto, della Spinosaurus Revolution) e la più ampia ed eterogenea contro-rivoluzione, che, in vari modi, si oppone a parte della rivoluzionaria – se non eretica – interpretazione di Spinosaurus. Io però eviterò di schierarmi. Dopo aver

Spinosaurus Revolution, Episodio II: Ode a “Spinosaurus C”, e sulla gioia di completare il puzzle 

Theropoda [2014-09-13 11:51:00]  recommend  recommend this post  (33 visits) info

E ricordati:“Spinosaurus C”, per il suo bene, non esiste. Simone Maganuco, 31 Maggio 2009 L'hai fatto, brutto figlio di... Ian Malcolm La pazienza è la virtù dei forti. In questi giorni, la paleo-rete è invasa da immagini, filmati e, sopratutto, discussioni relative alla pubblicazione di nuovi resti riferiti a Spinosaurus, ed alle implicazioni di tale scoperta (Ibrahim et al.

Spinosaurus Week: Introduzione 

Theropoda [2014-09-07 17:21:00]  recommend  recommend this post  (73 visits) info

Come annunciato un mese fa, la prossima settimana (per la precisione, il 12 settembre) sarà inaugurata a Washington (USA) una mostra su Spinosaurus, patrocinata dalla National Geographic Society. I dettagli di questa mostra, e i contenuti scientifici da cui è ispirata, saranno oggetto di una serie di post che pubblicherò in concomitanza con quell'evento. Come accennai un mese fa, c'è molta

Running Out of Ground - Trekking to the Roof of Africa on Mt. Kilimanjaro - Part 5 - Down From the Mountain - Days Eight and Nine 

Earthly Musings [2014-08-27 01:59:00]  recommend  recommend this post  (70 visits) info

And so, after 16 months of planning, preparing, and participating, the Mt. Kilimanjaro adventure was almost complete. Surprisingly, I did not feel a great sense of personal accomplishment. My competitive days are long in the past and wasn't about to be disappointed if my body could not handle the thin air or the rigors of mountaineering. I considered this trip to be a success based only on my acceptance to undertake it and spending quality time with good friends in exotic places. Acheiving the [...]

Running Out of Ground - Trekking to the Roof of Africa on Mt. Kilimanjaro - Part 3 - Skirting the Mountain's Base - Days Three, Four, and Five 

Earthly Musings [2014-08-26 00:18:00]  recommend  recommend this post  (56 visits) info

Shira 1 Camp to Moir Hut - August 15 Leaving Shira 1 Camp, the porters set out for their destination - Moir Hut Camp.The landscape has definitely changed since the rainforest.The Shira Plateau is a lava flow-filled caldera. The Shira Volcano was likely the first cone built in this area, less than one million years ago. It is incredible young for being so large. Trekkers are walking on the lava-flow surface here.This is a close-up of the main type of rock seen on Kilimanjaro - the rhomb porphory [...]

Running Out of Ground - Trekking to the Roof of Africa on Mt. Kilimanjaro - Part 2 - The Approach - Days One and Two 

Earthly Musings [2014-08-25 23:37:00]  recommend  recommend this post  (33 visits) info

In spite of the inevitable delays on such a grand undertaking, we were trekking by about 4 PM on August 13. At first we walked on a 4X4 road, then a bonafide trail. Our route up the mountain would be the Lomosho Route.Near the start of the trek, we travel through carrot and potato fields.After entering the National Park, the forest is preserved and quite beautiful.One of our porters carrying eggs for the trip.Forest hiking.Colubus monkeys were quite numerous in the trees overhead. The are [...]

Running Out of Ground - Trekking to the Roof of Africa on Mt. Kilimanjaro - Part 1 - The Set-Up 

Earthly Musings [2014-08-25 20:27:00]  recommend  recommend this post  (40 visits) info

Many of you know that I have been in Africa this August traveling with my wife Helen. We have been on safari to Serengeti and Ngorongoro Crater, as well as partaking in a trek with friends to the top of Mt. Kilimanjaro. We have just returned home and are beginning to process the myriad emotions, information, photographs, and memories. A blog posting seems too simple a venue to express all that we have experienced in these 19 days. In a word, the trek was hard but doable, especially with the [...] | Impressum