Precambrian rocks of Tasmania, Part II- Mt. Mary area

The Mt. Mary area (S. lat. 42° 12', long. 145°50') is underlain almost entirely by rocks of Pre-Cambrian age, the exception being a small downfaulted block of Crotty (?) Sandstone, (Silurian). The Pre-Cambrian rocks are divided into three main groups. The oldest is the Joyce Group which consists of mica-garnet schists, quartzites and amphibolites. This is overlain unconformably by quartz schists, massive quartzites and phyllites of the Mary Group. Above these are quartzites. mica schists, garnet-mica schists and amphibolites of the Franklin Group. Igneous rocks are recognized as premetamorphic amphibolites (Older Basic Igneous Group) and post-metamorphic dolerites (Younger Basic Igneous Group). The sediments are broadly folded into the Mary Anticline. Tight, recumbent drag folds are abundant and are shown by all formations. Cleavage or schistosity, generally parallel to the bedding, is well developed in phyllites and schists. A regular, regional lineation plunges fiatly to the west and is cut by a sporadic lineation almost at right angles. Faulting is very abundant and makes the interpretation of the structure very difficult. Three sets of faults trend (in order of importance) at 120°, 10° and 60°-80°. The major faults are high angle reverse faults. There is some degree of structural control of the physiography. All rivers are superimposed and two streams show maturity in their central reaches due to resistant quartzites forming local base levels. There is evidence of rejuvenation of some rivers. Rocks of the Joyce and Franklin Groups are metamorphosed to garnet grade while the Mary Group is less altered. Selective metamorphism is demonstrated and is probably due to the favourable chemical and physical nature of the Joyce and Franklin Groups

The Precambrian rocks of Tasmania, Part I-Dolerites of the North-West Coast

At least 30 small bodies of dolerite have been found intruding sediments of the Pre-Cambrian Rocky Cape Group along the coast between Sulphur Creek and Crayfish Creek. The igneous bodies are chiefly sills although dykes also occur. The dolerites are characterized by strong deuteric alteration which led to the formation of secondary tremolite-actinolite, chlorite, zoisite, albite, calcite, sericite, sphene, leucoxene, serpentine, and prehnite. These rocks show petrological and chemical affinities with dolerites of a similar age in Western and South Australia. They have certain features in common with the lavas of the Cambrian Dundas Group, but the possibility that these bodies acted as feeders to the flows is discounted on structural and chemical grounds

The Regressivity of a Tax on Consumer Interest Exceeding Fifteen Percent

This note estimates the tax incidence of a proposed thirty percent surtax on consumer interest in excess of fifteen percent annually using data from the 2007 Survey of Consumer Finance. The burden of this tax falls on the 11.8% of households with unpaid balances on credit cards with interest rates over fifteen percent. The tax is highly regressive with a Suits Index of -0.40

Origin of deformed conglomerate and pseudo deformed conglomerate

Rocks produced by the deformation of conglomeratic sediments strongly resemble pseudodeformed conglomerates in which tectonic disruption of beds, veins and pebbles produce pebblelike bodies. The Goat Island Conglomerate is a tectonic melange containing numerous tectonically formed fragments but is dominantly a metaconglomerate

Research in the design of high-performance reconfigurable systems

An initial design for the Bit Processor (BP) referred to in prior reports as the Processing Element or PE has been completed. Eight BP's, together with their supporting random-access memory, a 64 k x 9 ROM to perform addition, routing logic, and some additional logic, constitute the components of a single stage. An initial stage design is given. Stages may be combined to perform high-speed fixed or floating point arithmetic. Stages can be configured into a range of arithmetic modules that includes bit-serial one or two-dimensional arrays; one or two dimensional arrays fixed or floating point processors; and specialized uniprocessors, such as long-word arithmetic units. One to eight BP's represent a likely initial chip level. The Stage would then correspond to a first-level pluggable module. As both this project and VLSI CAD/CAM progress, however, it is expected that the chip level would migrate upward to the stage and, perhaps, ultimately the box level. The BP RAM, consisting of two banks, holds only operands and indices. Programs are at the box (high-level function) and system level. At the system level initial effort has been concentrated on specifying the tools needed to evaluate design alternatives

The Effects of Lottery Promotions, Credit Constraints, and the Stock Market on Daily New Jersey Lottery Sales

This paper estimates the price elasticity of demand for daily Pick 3 and Pick 4 lottery games using random price variation generated by the New Jersey Lottery’s evening Pick 3 Green Ball promotion and Pick 4 Red Ball promotion. These promotions lower the price of a lottery ticket for an evening daily numbers game by increasing prize payments during the promotion period. The own-price elasticity of demand for evening Pick 3 is -0.50, while the own-price elasticity of demand for evening Pick 4 is -0.57. This inelastic demand implies that the loss in margin outweighs the gain in sales during the promotion for the promoted lottery game. Midday Pick 3 and Pick 4 lottery sales increase because of the price promotions for their evening counterparts. The lottery promotions also moderately increase midday daily game sales and Pick 3 and Pick 4 sales temporarily after the promotions end. Our findings that sales are significantly higher on Fridays and at the start of a month are consistent with daily lottery players facing credit constraints