Look after your drill core: it’s a resource that keeps on giving Diamond drilling is always undertaken for the needs of the moment. But fresh-cut rock, in most cases, will last hundreds, if not thousands, of years. Drill core is a resource which can keep on giving […]
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Aboriginal Heavy Mineral Separation Technology in the Pilbara of Western Australia More than 50 years ago I observed a heavy mineral separation technique being practiced by aboriginals in the Pilbara region of Western Australia. The technique was simple, effective and probably unique. I have never seen it […]
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The philanthropist of Nullagine “The past is a foreign country; they do things differently there.” – L P Hartley The town of Nullagine, in the Pilbara region in the northwest of Western Australia, is situated 1400 km NNE of the State capital Perth, where the old Great […]
Read more →Climate change: naming of parts Reed, Henry. “Naming of Parts.” New Statesman and Nation 24, no. 598 (8 August 1942): 92. NAMING OF PARTS To-day we have naming of parts. Yesterday, We had daily cleaning. And to-morrow morning, We shall have what to do after firing. But to-day, […]
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The movement of faults Faults are not mathematical planes (2D surfaces with length and depth but no thickness) but 3D tabular zones of deformed rock. The length and depth of a fault is always much greater than its thickness, but fault width can vary through many orders […]
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FEAR OF FAT Men, it has been well said, think in herds; it will be seen that they go mad in herds; while they only recover their senses one by one. Charles Mackay, 1841 In 1841, Scottish journalist Charles Mackay wrote a book called Extraordinary Popular Delusions and the […]
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How to Salt a Gold Claim: Part 2 – Karpa Springs and Busang In my previous post I described my encounter in 1984 with claim salting (or at least, alleged salting). These were early days, the late 20th Century gold boom was still young, and claim salting […]
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How to Salt a Gold Claim: Part 1 – Queensland Interlude Looking through a box of my old field notebooks the other day I came across one which contained a cartoon sketch I had made of an old Queensland prospector and remembered the story behind it. In […]
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Stereonet solutions for non oriented drill core Shawn Harvey of Saskatchewan sent me this email earlier this year: Hello again Roger, You previously helped me out with some alpha-beta stereonet solutions which worked great (thanks again!!). I am now looking into a slightly more complex stereonet issue. […]
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Using a stereonet to calculate strike and dip from alpha-beta angles in oriented drill core The attitude of a surface in oriented drill core can be determined by the measuring two internal core angles known as alpha (α) and beta (β). These numbers are then normally entered […]
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