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October 23, 2017

Monday Geology Picture: Basaltic Weathering

For this week’s picture, here’s an image of a relatively young basaltic surface weathering. You can see yellow-green olivine crystals weathering out of the dark matrix. Olivine is one of the first minerals to weather out of rocks, so you can tell that these basalts must be young. Older basalts generally don’t contain fresh olivine, at least not any crystals that you can easily identify with the naked eye. I …

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October 16, 2017

Monday Geology Picture: Dinosaur Mobile

Since my baby boy is likely to arrive this week, I thought that I would share a picture from our dinosaur-themed nursery for this week’s picture. This picture shows the lovely dinosaur mobile that we’ve hung over the crib. This mobile was hand-made by women in South Africa (providing key local employment). I ordered it from a South African website. However, it is also available on Etsy for international customers. …

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October 9, 2017

Monday Geology Picture: Sani Pass, Lesotho

For this week’s geology picture, here’s a shot that I took last year when I visited Sani Pass, which is one of the ways to enter Lesotho. The country of Lesotho is located high up in basaltic mountains, entirely above 1,000 m. You can see basaltic cliffs on either side of this picture. The basalts erupted approximately 180 million years ago and are part of the Karoo Large Igneous Province. I’ll …

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October 2, 2017

Monday Geology Picture: Posing with Pahoehoe

First of all, for this week’s “Monday Geology Picture” enjoy this fantastic picture of me sitting on some pahoehoe lava earlier this year, when I visited Réunion Island back in March. Second of all, let me provide a little explanation about why I have been terribly negligent of this blog over the past few months, despite my best intentions at the beginning of the year. In January I fully intended to read one science …

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June 19, 2017

Monday Geology Picture: Bogenfels Arch, Sperrgebiet, Namibia

I’m up in Namibia this week, so I thought it would be appropriate to share a picture that I took over the weekend of Bogenfels Rock Arch, which is located in the Sperrgebiet region of Namibia. I previously posted a similar picture back in 2015. See that post for some more information on the arch and the Sperrgebiet.

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May 29, 2017

Monday Geology Picture: Kimberlite in Kimberley

For this week’s “Monday Geology Picture”, here’s a snap of a mine cart filled with kimberlite rocks — and a mantle xenolith or two. I took this picture last year when I visited The Big Hole Museum in Kimberley, South Africa. The rock kimberlite was named after the town of Kimberley, of course! For those who are unfamiliar, kimberlite is the ore that is mined for diamonds, and many of the …

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May 22, 2017

Monday Geology Picture: A Vineyard & the Cape Fold Belt

For this week’s “Monday Geology Picture” here’s a view of the Cape Fold Belt with a vineyard in the foreground. I took this picture yesterday when I took a short walk with some friends through a vineyard located in the Stellenbosch winelands, just outside of my home city of Cape Town. You can see some impressive folding in those distant mountains!

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May 15, 2017

Monday Geology Picture: Pahoehoe Lava Flow

For this week’s “Monday Geology Picture” here’s a stunning example of a pahoehoe lava flow. I took this picture back in March when I visited Piton de la Fournaise volcano on Réunion Island. I’ll be sharing more pictures from Réunion soon – stay tuned!

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May 8, 2017

Monday Geology Picture: Sandstone Rock Art

First and foremost, I must apologize for the long gap in my blogging. I started the year with great intentions to revive this blog with my monthly science book posts… and then I didn’t post for several months! However, I think I have a good excuse: in January I found out that I am pregnant. Unfortunately, I have been suffering from an extreme form of morning sickness. I’ve been really, …

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January 16, 2017

Monday Geology Picture: Intaka Island Salt Pan

For this week’s picture, here’s a view of a salt pan on Intaka Island, a small nature reserve in the Century City area of Cape Town. I often go to Intaka Island to paddle in a kayak on the canals surrounding the island. On Saturday morning I went for one of my usual paddles, and then in the afternoon I joined some friends for a nature walk on the island itself. …

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