Mixed-up with Mongolian Migmatite

When I was a novice geology student, the world appeared kind of simple. Faced with a rock, I could ask myself the most fundamental question – is this rock sedimentary, metamorphic or igneous? And there was some sort of expectation that the question could be answered clearly. It seemed the same in First-year Botany. We were…

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Grumbling about Graywacke

When I was growing up in Central Otago (New Zealand) graywacke was a bane of my life, and certainly of my Dad’s too. The family lived on a section near the foot of an alluvial terrace dating back to glacial times. The loess soil was soft, but the impact of a metal fork on a…

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