Gallery

 Dr Ross Mitchell from Curtin University drilling a mafic dyke in Western Australia. Using the core from this hand drill, paleomagicians like Dr Mitchell to reconstruct the positions of the continents stretching back billions of years.  Does geology control politics? Read the article linked in the profile to find out.  A mafic enclave within the andesite that had pyroxene phenocrysts. This was taken by Heather Winslow with an iPhone through a 10x hand lens. Enclaves are always exciting to find in the field because they can provide detailed information of eruptive processes. Typically having enclaves eludes to the process of magma mingling, which means these two lavas were in contact with each other before the eruption while both in their liquid state.  On the flanks of the Manantial Pelado cinder cone by Heather Winslow in Chile 🇨🇱  The ride to the volcanic field of Manantial Pelado pictured by Heather Winslow on her horse, Copeté, which means cowlick – the aerriero’s daughter named him.  The Rock of Gibraltar by our resident geographer @jrdean_uk. The Rock is composed of Jurassic shale and limestone deposited in the Tethys Ocean and subsequently uplifted during the continental collision between the Eurasian and African plates. This collision effectively closed off the Mediterranean Sea from the Atlantic Ocean resulting in the Messinian Salinity Crisis.  Lava flow over Ecuador by @jrdean_uk. The first in a series of photos entitled 'Travels of a Geographer: too bad he can't identify the rocks'
 Massive mafic dyke of the Yilgarn Craton, Australia. To a paleomagnetist, magic dykes are key localities for defining paleogeography. As these magmas cool, magnetic minerals align with the magnetic field. Measuring the declination of the magnetic minerals allows paleomagnetists to decipher the latitude at which the dyke formed. Additionally, minerals such as zircon and baddeleyite found in these dykes allow for precise geochronology to define the age. With the age and paleolatitude constrained the positions and movements of continents can be obtained. Read more about the adventures a paleomagician in Western Australia on our latest article by PhD student, Yebo Liu. Link in profile.  Last photo of Heather Winslow sampling lava at the Volcán Manantial Pelado in Chile. Thanks for an amazing article!  Working hard or hardly working…Digging a hole to collect tephra from Cerro Rodundo cinder cone with Heather Winslow.  Heather Winslow high on a volcanic ridge near Manantial Pelado in Chile.  Campsite view at the Volcán Manantial Pelado in Chile by Heather Winslow. The Volcán Manantial Pelado is a poorly-studied basaltic andesite to andesite stratocone in the transition zone of the Southern Volcanic Andean Zone. Surrounded by regional, voluminous silicic magmatism, it is one of the few mafic centers in the area. Heather went to the Andes to better understand the petrogenesis of this infrequent, mafic eruptive center in order to further understand the diversity of parental magmas in the area. Follow the link in the profile to read about her Chilean adventure.  Travels of a Geographer #3: Machu Picchu by @jrdean_uk Pity that our geographer friend had no idea the significance of the Triassic #granite from which Machu Picchu is built.  Kellie found some incredible rock exposures in the #OldSnowy area of the #GoatRocksWilderness. This one Old Snowy area was named “Marble Cake” (flow-banded lavas), with others called "Black Licorice" and "Fruit Cake". #hungrygeologist @osu.ceoas
 Looking for an internship in science communication? Look no further! TG is looking for interns and associate editors. Follow the link in the profile for more information.  Who wants lunch on the shores of a volcanic lake? Heather Winslow at Laguna Manantial Pelado – one of her favorite lunch spots. She says, "Taking our boots off and enjoying the water was our equivalent to a spa day."  Finding firewood on an active volcano is difficult. Prof Philipp Ruprecht from Uni Nevada Reno collected all that he could find. Behind him is Volcán Descabezado Grande, Quizapu, and Cerro Azul from left to right. Follow the link in the profile to read more...  A typical view of Cerro Rodundo a cinder cone by Heather Winslow in Chile.  A geographer goes to the #Alps of #Liechtenstein... @jrdean_uk  The next in our 'Travels of a Geographer' by @jrdean_uk Sedimentary rocks somewhere in Jordan.

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