Posts treating: "Africa"
Friday, 16 June 2017
This post is a 2013 Guardian article by Professor Mark Nwagwu of the Department of Biological Sciences, Paul University, Awka. It was Tuesday, March 19, 2013, a day when Roman Catholics celebrated the Solemnity of St. Joseph, foster father of Our Lord Jesus Christ and faithful husband of the Blessed Virgin Mary. For the faithful…
Megan Jamer is a geoscientist from Canada, and an avid cyclist and explorer. Megan is currently travelling around East Africa on bicycle, taking in some remarkable sites and observing first hand the relationship between geoscience and sustainable development. Today Megan makes her debut on the GfGD blog site, writing on the relationship between agroforestry, landslides, and disaster risk reduction. Some landslide interventions are hard to miss along Rwanda’s highways. There are gabions, [...]
Deep in the Archean, things suddenly got violent in the deep water of the Mapepe Formation's oceanic setting. What was a quiet precipitation of chert suddenly was torn apart and tumbled downslope. Was an earthquake to blame? A bolide impact? This is the
Volcanic "hailstones" called accretionary lapilli rained down on South Africa 3 billion years ago, and have survived to be seen in the present day, along the R40 road through Barberton Mountain Land, near the Bulembu border crossing into
Ricostruzione composita dei resti di Teleocrater (da Nesbitt et al. 2017). I diversi colori nella ricostruzione scheletrica riflettono i diversi esemplari utilizzati come riferimento.
Tra gli animali viventi, i coccodrilli
sono quelli più strettamente imparentati con gli uccelli. Questo
legame, che fonda il clade Archosauria (che, in versioni minoritarie,
è detto Avesuchia, per usare
This fossil stromatolite was found at Atar Mauritania. Fossil dates to the pre-Cambrian Period.
It was on display at the Musée de Mineralogie (Mineralogy Museum)
located at the MINES ParisTech, 60 Boulevard Saint-Michel 75006 Paris
Ogni aggiunta, per quanto
frammentaria, al record fossile dei dinosauri africani è sempre
benvenuta. E se poi si tratta di un theropode dalla fine del
Cretacico africano, è due volte benvenuta.
Longrich et al. (2017)
descrivono un dentale frammentario (e riferiscono due denti al
medesimo taxon) dai fosfati del Marocco. I fosfati marocchini hanno
un'età compresa tra il Maastrichtiano e l'Eocene
When touring the geology of the Barberton Greenstone Belt last August, our group visited the Sheba Mine, a gold mine high in the hills. Their geologist kindly showed us around and allowed us to visit his history-laden office. I have no idea where this sample originated, but it was the only fold I saw in the place, nestled between sepia-toned photographs and old lanterns and rusty picks. I wonder what
Postura semi-eretta bipede per Spinosaurus, modificato da Ibrahim et al. (2014). Non mi pare sia così assurdo...
In un recente post, ho
discusso l'ipotesi quadrupede proposta da Ibrahim et al. (2014) su
Spinosaurus, ed ho concluso che il femore e tibia di
Spinosaurus, come pubblicato da Ibrahim et al. (2014, e
informazioni supplementari) non mostrano particolari adattamenti per
un nuoto a
Negli uccelli a coda corta, i muscoli
ileofibulari generano una forza estensoria che controbilancia lo
spostamento anteriore del baricentro, mantenendo una postura
Il bauplan (il modello generale
della struttura corporea) dei theropodi ha una serie di vincoli che
incanalano la traiettoria evolutiva dei vari gruppi, anche quando
questi apparentemente deviano marcatamente gli
Banded iron formation is an "extinct rock" that can be found in ancient marine strata such as those found in the Barberton Greenstone Belt. Visit an outcrop on the Barberton GeoTrail and contemplate the bizarre anoxic world that Earth used to
A basalt flow in Iceland shows both enticing pahoehoe and fractures with a Y-shaped intersection pattern. Comparisons to bread loaves and east Africa suggest a reason
Since I showed off the 3D kimberlite intrusion breccias yesterday, I feel as if I owe you some other photos from that lovely exhibit at the IGC. I apologize for the poor quality of these photos – the gorgeous samples were behind glass and brightly lit, which made photography difficult. But the rocks are sooooooooo pretty, I think you’ll enjoy viewing them just the same. Let’s start with a gargantuan
Humans have become a planet-scale disruptive force. What
Humans have become a planet-scale disruptive force. What
This image is of a Vascoceras (Paravascoceras) cauvini Chudeau ammonite fossil. Animal existed in Cretaceous Period. The fossil was found in Damergou Niger Africa.
Displayed at Muséum National D'Historie Naturelle Jardin Des Plantes Paléontologie et Anatomie Comparée in Paris, France (August
Have a look at this week's Friday fold - but be aware that it will be looking
What does the sedimentary record of a giant meteorite impact look like? Turns out it is full of tsunami breccia, fine ash, hail-like spherules, and a barium-rich ocean's crystal precipitates. Join us in the Barberton Greenstone Belt of South Africa to learn
Erik Klemetti posted today at Eruptions about komatiite, which is apropos, considering I just finished imaging some samples of that ultramafic volcanic rock. Have a look at three samples from Barberton Greenstone Belt here, each from the 3.27 Ga Weltevreden Formation: Link GigaPan by Callan Bentley Link GigaPan by Callan Bentley Link GigaPan by Callan Bentley And, while we’re at it, here’s one from the Red Lake Greenstone Belt (~3.0
Sometimes you find big ideas in small places. Here, a South African chert boulder mimics in miniature fold and thrust belts the world