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 […]
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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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Sense of Movement Structures in Fault Zones. Part 3: Identification criteria Within or adjacent to a fault zone, various minor structures can be present that enable the sense of movement across the fault to be determined. These structures are often called kinematic indicators. In Part 1 of […]
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Sense of Movement Structures in Fault Zones : Part 2 – Examples Within or adjacent to fault zones, various minor associated structures can be present that enable the sense of movement across the fault to be determined. These structures are often called kinematic indicators. This is the […]
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