Geopuzzle #4

These boulders are telling us something. What?

gc4.jpg

For this one, I had the choice of a photo where the answer is quite subtle, and one where it’s pretty obvious. Being evil, I chose the former, and am holding the latter in reserve.
Update: Click through for the answer.

Categories: geology, geopuzzling

To BPR3, or not to BPR3?

Within the geoblogosphere at least, the reaction to Casey Luskin of the Discovery Insitute’s unauthorized hijacking of the BPR3 icon (Mike has the full saga) has morphed into a much broader and more interesting debate: about the ResearchBlogging project itself, about how it fits into peoples’ ideas of science blogging , and even about what the term ‘science blogging’ actually means.

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Categories: bloggery, general science, public science

Into the Bushveld #2: ‘Look at the size of that thing!’

We’ve established that the differentiated mineral unit that I showed you yesterday is part of a larger, slow cooling intrusive igneous body. More specifically, it it found within the imaginatively named ‘Upper Zone’ of the Rustenburg Layered Suite, which is also exactly what it says on the tin: a fairly substantial sequence of compositionally layered igneous rocks. To see just how substantial, we’re going to have to step back a little:

outcrop of Rustenburg Suite of Bushveld complex

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Categories: fieldwork, geology, volcanoes

Layer cake stratigraphy

Brian might not like it, but I think this t-shirt is pretty cool:

zoom.gif

(via the Livejournal community)

Categories: bloggery, geology

Should I be linking to you?

Janet tells me that it’s Blogroll Amnesty Day:

I think that the blogosphere is (or could be) different from media wherein news and commentary is “broadcast” to an audience by allowing back and forth communication — the kind of thing that works best when there’s a healthy community of people taking part in the conversation.

I want to hear the voices that are new to the conversation, or the ones that are speaking in the quieter corners that the high-traffic bloggers sometimes don’t notice. I want to hear from people whose experiences have differed from my own in interesting ways. (This is not to say that I don’t want to be in conversation with people who have had similar experiences — that’s important in a community, too.) I don’t want blogospheric hierarchies telling me who’s worth reading any more than I want network news producers telling me what stories I should care about.

Help me find the blogs that I ought to be reading. (This may include your blog — don’t be shy about telling me so!)

It’s been a while since I updated my blogroll to take account of the changes in the geoblogosphere, so I’ve just gone through and added some of the newer additions to the feed (and, of course, taken account of Yami/Maria’s assimilation into the Scibling fraternity, which I’m very excited about). But there are probably people that I’m missing off one, or both, so let me know if your rock blogging is not being properly advertised. I’m sure there’s also lots of academic and more generally sciency blogs that I’m reading, or should be reading, or should be returning the link-love to, so feel free to nag away.

Categories: bloggery, links